stretch reflex

Summary

Summary: Reflex contraction of a muscle in response to stretching, which stimulates muscle proprioceptors.

Top Publications

  1. ncbi Reflex gain of muscle spindle pathways during fatigue
    A Biro
    School of Kinesiology and Health Science, York University, Toronto, ON, Canada
    Exp Brain Res 177:157-66. 2007
  2. ncbi A method to evaluate reflex excitability of the human ankle plantarflexors despite changes in maximal activation capacities
    Daniel Lambertz
    Universite de Technologie de Compiegne, Département de Génie Biologique, CNRS UMR 6600, 60205 Compiegne Cedex, France
    Exp Brain Res 143:89-99. 2002
  3. ncbi Clonus after human spinal cord injury cannot be attributed solely to recurrent muscle-tendon stretch
    Janell A Beres-Jones
    Department of Neurology, UCLA School of Medicine, 1000 Veteran Avenue Suite A386, Mail Code 714722, Los Angeles, CA 90095 7147, USA
    Exp Brain Res 149:222-36. 2003
  4. ncbi Change of stretch reflex threshold in spasticity: effect of botulinum toxin injections
    G Stampacchia
    Dipartimento di Neuroscienze, Neuroriabilitazione, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
    Arch Ital Biol 142:265-73. 2004
  5. pmc The differential role of motor cortex in stretch reflex modulation induced by changes in environmental mechanics and verbal instruction
    Jonathan Shemmell
    Sensory Motor Performance Program, The Rehabilitation Institute of Chicago, Chicago, Illinois 60611, USA
    J Neurosci 29:13255-63. 2009
  6. ncbi Tonic stretch reflex threshold as a measure of spasticity: implications for clinical practice
    Andra Calota
    School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
    Top Stroke Rehabil 16:177-88. 2009
  7. pmc Interactions with compliant loads alter stretch reflex gains but not intermuscular coordination
    Eric J Perreault
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, 345 E Superior Street, Chicago, IL 60611, USA
    J Neurophysiol 99:2101-13. 2008
  8. ncbi Reliability of elbow stretch reflex assessment in chronic post-stroke hemiparesis
    Elizabeth G Condliffe
    Neural Control of Movement Laboratory, Department of Rehabilitation Sciences, Boston University, Boston, MA, USA
    Clin Neurophysiol 116:1870-8. 2005
  9. ncbi Prolonged muscle vibration increases stretch reflex amplitude, motor unit discharge rate, and force fluctuations in a hand muscle
    Minoru Shinohara
    Dept of Integrative Physiology, Univ of Colorado, Boulder, CO 80309 0354, USA
    J Appl Physiol (1985) 99:1835-42. 2005
  10. ncbi Cortical mechanisms underlying stretch reflex adaptation to intention: a combined EEG-TMS study
    L Spieser
    Mediterranean Institute of Cognitive Neuroscience, UMR 6193, CNRS University of Aix Marseille, Marseille, France
    Neuroimage 52:316-25. 2010

Research Grants

  1. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2006
  2. EFFECT OF NEURAL CONSTRAINTS ON MOVEMENT IN STROKE
    Julius Dewald; Fiscal Year: 2009
  3. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2009
  4. Changing a reflex to improve locomotion
    Aiko Thompson; Fiscal Year: 2010
  5. Spinal Reflex Conditioning and Locomotion
    JONATHAN WOLPAW; Fiscal Year: 2009
  6. Spinal Reflex Conditioning and Locomotion
    JONATHAN RICKEL contact WOLPAW; Fiscal Year: 2010
  7. Spinal Reflex Conditioning and Locomotion
    JONATHAN WOLPAW; Fiscal Year: 2009
  8. EFFECT OF NEURAL CONSTRAINTS ON MOVEMENT IN STROKE
    Julius Dewald; Fiscal Year: 2007
  9. EFFECT OF NEURAL CONSTRAINTS ON MOVEMENT IN STROKE
    Julius P Dewald; Fiscal Year: 2010
  10. Non-linear Characterization of the Stretch Reflex Arc and its Neuromodulation
    AMAN BEHAL; Fiscal Year: 2011

Detail Information

Publications190 found, 100 shown here

  1. ncbi Reflex gain of muscle spindle pathways during fatigue
    A Biro
    School of Kinesiology and Health Science, York University, Toronto, ON, Canada
    Exp Brain Res 177:157-66. 2007
    ..These results provide evidence that the gain of the gamma loop is increased during fatigue, indicating possible peripheral neural compensation to the motor neuron pool in order to preserve force output...
  2. ncbi A method to evaluate reflex excitability of the human ankle plantarflexors despite changes in maximal activation capacities
    Daniel Lambertz
    Universite de Technologie de Compiegne, Département de Génie Biologique, CNRS UMR 6600, 60205 Compiegne Cedex, France
    Exp Brain Res 143:89-99. 2002
    ..A mean stretch reflex (SR) amplitude ((-)SRA), i.e...
  3. ncbi Clonus after human spinal cord injury cannot be attributed solely to recurrent muscle-tendon stretch
    Janell A Beres-Jones
    Department of Neurology, UCLA School of Medicine, 1000 Veteran Avenue Suite A386, Mail Code 714722, Los Angeles, CA 90095 7147, USA
    Exp Brain Res 149:222-36. 2003
    ..However, these results support the theory that the interaction of central mechanisms and peripheral events may be responsible for clonus...
  4. ncbi Change of stretch reflex threshold in spasticity: effect of botulinum toxin injections
    G Stampacchia
    Dipartimento di Neuroscienze, Neuroriabilitazione, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
    Arch Ital Biol 142:265-73. 2004
    Spasticity is a disorder of hypertonus associated with neurological diseases, characterized by a decrease in stretch reflex threshold...
  5. pmc The differential role of motor cortex in stretch reflex modulation induced by changes in environmental mechanics and verbal instruction
    Jonathan Shemmell
    Sensory Motor Performance Program, The Rehabilitation Institute of Chicago, Chicago, Illinois 60611, USA
    J Neurosci 29:13255-63. 2009
    ..Such loops appear to add flexibility to the human stretch reflex, once considered to be immutable, allowing it to adapt across a range of functional tasks...
  6. ncbi Tonic stretch reflex threshold as a measure of spasticity: implications for clinical practice
    Andra Calota
    School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
    Top Stroke Rehabil 16:177-88. 2009
    Lance's definition of spasticity states: (1) the excitability of the tonic stretch reflex threshold is the conceptual unit of measure of spasticity; (2) because spasticity is a velocity-dependent phenomenon, different velocities of ..
  7. pmc Interactions with compliant loads alter stretch reflex gains but not intermuscular coordination
    Eric J Perreault
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, 345 E Superior Street, Chicago, IL 60611, USA
    J Neurophysiol 99:2101-13. 2008
    ..b>Stretch reflex sensitivity increased significantly in all muscles during interactions with the compliant environment and ..
  8. ncbi Reliability of elbow stretch reflex assessment in chronic post-stroke hemiparesis
    Elizabeth G Condliffe
    Neural Control of Movement Laboratory, Department of Rehabilitation Sciences, Boston University, Boston, MA, USA
    Clin Neurophysiol 116:1870-8. 2005
    ..To establish reliability of quantitative measures of elbow joint spastic hypertonia in post-stroke hemiparesis...
  9. ncbi Prolonged muscle vibration increases stretch reflex amplitude, motor unit discharge rate, and force fluctuations in a hand muscle
    Minoru Shinohara
    Dept of Integrative Physiology, Univ of Colorado, Boulder, CO 80309 0354, USA
    J Appl Physiol (1985) 99:1835-42. 2005
    ..of this study was to compare the influence of prolonged vibration of a hand muscle on the amplitude of the stretch reflex, motor unit discharge rate, and force fluctuations during steady, submaximal contractions...
  10. ncbi Cortical mechanisms underlying stretch reflex adaptation to intention: a combined EEG-TMS study
    L Spieser
    Mediterranean Institute of Cognitive Neuroscience, UMR 6193, CNRS University of Aix Marseille, Marseille, France
    Neuroimage 52:316-25. 2010
    ..Taken together, these results support the idea that anticipatory processes preset the sensorimotor cortex so as to adapt its early reaction to the perturbation relative to the subjects' intention...
  11. ncbi Effects of arousal and natural baroreceptor activation on the human muscle stretch reflex
    David McIntyre
    School of Sport and Exercise Sciences, University of Birmingham, Birmingham, United Kingdom
    Psychophysiology 41:954-60. 2004
    ..This study investigated the effects of phase of the cardiac cycle and arousal on the muscle stretch reflex components M1, M2, and M3...
  12. ncbi Spasticity measurement based on tonic stretch reflex threshold in stroke using a portable device
    Andra Calota
    School of Physical and Occupational Therapy, McGill University, 3654 Promenade Sir William Osler, Montreal, Que, Canada H3G 1Y5
    Clin Neurophysiol 119:2329-37. 2008
    We investigated intra- and inter-evaluator reliability to quantify spasticity based on the tonic stretch reflex threshold (TSRT) and the correlation between TSRT and resistance to stretch.
  13. ncbi Long-latency component of the stretch reflex in human muscle is not mediated by intramuscular stretch receptors
    D M Corden
    School of Biological Sciences, Royal Holloway, London University, London TW20 0EX, United Kingdom
    J Neurophysiol 84:184-8. 2000
    ..In the latter, only M1 was produced. It is concluded that the long-latency component of the stretch reflex, M2, originates in skin and/or subcutaneous nerve terminals and that no part of M2 originates in muscle ..
  14. ncbi Stretch reflex excitability of the anti-gravity ankle extensor muscle in elderly humans
    N Kawashima
    Department of Rehabilitation for the Movement Functions, Research Institute of National Rehabilitation Center for Persons with Disabilities, Namiki, Tokorozawa City, Japan
    Acta Physiol Scand 180:99-105. 2004
    To examine whether the stretch reflex excitability of the soleus muscle changes with age, stretch reflexes at rest (REST) and during weak voluntary contractions (ACT) were elicited in 18 older and 14 younger subjects.
  15. pmc Interactions between limb and environmental mechanics influence stretch reflex sensitivity in the human arm
    Matthew A Krutky
    Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
    J Neurophysiol 103:429-40. 2010
    ..The purpose of this study was to investigate the specificity of stretch reflex modulation during interactions with mechanical environments that challenge arm stability...
  16. ncbi Influence of posture and muscle length on stretch reflex activity in poststroke patients with spasticity
    Judith F Fleuren
    Roessingh Research and Development, Enschede, The Netherlands
    Arch Phys Med Rehabil 87:981-8. 2006
    To investigate the influence of different positions on stretch reflex activity of knee flexors and extensors measured by electromyography in poststroke patients with spasticity and its expression in the Ashworth Scale.
  17. ncbi Relationship between stretch reflex thresholds and voluntary arm muscle activation in patients with spasticity
    Nadine K Musampa
    School of Rehabilitation, University of Montreal, Montreal, QC, Canada
    Exp Brain Res 181:579-93. 2007
    ..It is suggested that the presence of spatial spasticity zones might be a major cause of motor impairments in general and deficits in inter-joint coordination in particular in patients with spasticity...
  18. doi Whole body vibration does not potentiate the stretch reflex
    J T Hopkins
    Human Performance Research Center, Brigham Young University, Provo, Utah, USA
    Int J Sports Med 30:124-9. 2009
    Whole body vibration (WBV) is theorized to enhance neural potentiation of the stretch reflex. The purpose of this study was to determine if WBV affects the quadriceps reflex from a patellar tendon tap...
  19. ncbi Effects of dorsolateral spinal lesions on stretch reflex threshold and stiffness in awake cats
    J Taylor
    Department of Neuroscience, University of Florida, Gainesville 32610, USA
    Eur J Neurosci 11:363-8. 1999
    ..Unilateral lesions of the dorsolateral funiculus (DLF) produced significant ipsilateral decreases in stretch reflex threshold and increases in reflex gain, measured as incremental dynamic stiffness (IDS)...
  20. ncbi Variation of magnitude and timing of wrist flexor stretch reflex across the full range of voluntary activation
    I Cathers
    School of Biomedical Sciences, The University of Sydney, Sydney, Australia
    Exp Brain Res 157:324-35. 2004
    This paper reports an investigation of the magnitude and timing of the stretch reflex over the full range of activation of flexor carpi radialis...
  21. ncbi Stretch reflex modulation during imposed static and dynamic hip movements in standing humans
    Noritaka Kawashima
    Department of Movement Functions, Research Institute, National Rehabilitation Center for Persons with Disabilities, 4 1 Namiki, Tokorozawa, Saitama, 359 8555, Japan
    Exp Brain Res 174:342-50. 2006
    The purpose of this study was to investigate the effects of hip proprioceptors on soleus stretch reflex excitability in standing humans...
  22. pmc Pulsatile motor output in human finger movements is not dependent on the stretch reflex
    J Wessberg
    Department of Physiology, Goteborg University, Goteborg, Sweden
    J Physiol 493:895-908. 1996
    ..perturbations were delivered during slow voluntary finger movements with the aim of exploring the role of the stretch reflex in generating the 8-10 Hz discontinuities that characterize these movements...
  23. pmc Group II muscle afferents probably contribute to the medium latency soleus stretch reflex during walking in humans
    M J Grey
    Center for Sensory Motor Interaction, Aalborg University, Fredrik Bajersvej 7 D3, DK 9220, Aalborg, Denmark
    J Physiol 534:925-33. 2001
    ..of this study was to determine which afferents contribute to the medium latency response of the soleus stretch reflex resulting from an unexpected perturbation during human walking. 2...
  24. ncbi Short latency stretch reflex in human lumbar paraspinal muscles
    Jørgen Skotte
    Department of Physiology, National Institute of Occupational Health, Lersø Parkallé 105, DK 2100 Copenhagen, Denmark
    J Neurosci Methods 145:145-50. 2005
    The aim of the study was to measure stretch reflex latencies of the lumbar paraspinal muscles...
  25. doi Effects of contraction intensity on muscle fascicle and stretch reflex behavior in the human triceps surae
    Neil J Cronin
    Center for Sensory Motor Interaction, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
    J Appl Physiol (1985) 105:226-32. 2008
    ..in contraction intensity in the human triceps surae and to relate fascicle stretch responses to short-latency stretch reflex behavior...
  26. ncbi Capsaicin-induced muscle pain alters the excitability of the human jaw-stretch reflex
    K Wang
    Center for Sensory Motor Interaction, Orofacial Pain Laboratory, Aalborg University, Fredrik Bajers Vej 7 D 3, Denmark
    J Dent Res 81:650-4. 2002
    ..activation of nociceptive muscle afferent fibers would be linked to an increased excitability of the human jaw-stretch reflex and whether this process would be sensitive to length and velocity of the stretch...
  27. ncbi Experimental muscle pain increases the human stretch reflex
    D A Matre
    Center for Sensory Motor Interaction, Aalborg University, Denmark
    Pain 75:331-9. 1998
    ..With pain in the soleus muscle the mechanical stretch reflex response (ankle torque) increased significantly (P = 0.0007) as compared to before pain...
  28. ncbi Is the long-latency stretch reflex in human masseter transcortical?
    Sophie L Pearce
    Department of Physiology, The University of Adelaide, 5005, Adelaide, South Australia, Australia
    Exp Brain Res 150:465-72. 2003
    A long-latency stretch reflex (LLSR) has been described in the human masseter muscle, but its pathway remains uncertain...
  29. ncbi The role of the stretch reflex in the gastrocnemius muscle during human locomotion at various speeds
    M Ishikawa
    Neuromuscular Research Center, Dept of Biology of Physical Activity, Univ of Jyvaskyla, 40014 Jyvaskyla, Finland
    J Appl Physiol (1985) 103:1030-6. 2007
    ..of the human medial gastrocnemius (MG) muscle was monitored to evaluate possible input from the short-latency stretch reflex (SLR) during the stance phase of running and to examine its timing at various running speeds...
  30. ncbi Neurophysiological methods for the assessment of spasticity: the Hoffmann reflex, the tendon reflex, and the stretch reflex
    G E Voerman
    Roessingh Research and Development, Enschede, The Netherlands
    Disabil Rehabil 27:33-68. 2005
    ..neurophysiological methods to assess spasticity with respect to mechanisms and methodology, and to describe the three most commonly used methods: the Hoffmann reflex (H-reflex), the Tendon reflex (T-reflex), and the Stretch Reflex (SR).
  31. ncbi Identification of intrinsic and reflex contributions to human ankle stiffness dynamics
    R E Kearney
    Department of Biomedical Engineering, McGill University, Montreal, P Q, Canada
    IEEE Trans Biomed Eng 44:493-504. 1997
    ..It is concluded that reflex stiffness can be large enough to be important functionally, but that its effects will depend strongly upon the particular conditions...
  32. pmc The effect of task instruction on the excitability of spinal and supraspinal reflex pathways projecting to the biceps muscle
    Gwyn N Lewis
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, 345 E Superior St, Chicago, IL 60611, USA
    Exp Brain Res 174:413-25. 2006
    ..controversy within the literature regarding the influence of task instruction on the size of the long-latency stretch reflex (M2) elicited by a joint displacement...
  33. ncbi Continuous wavelet transform in the evaluation of stretch reflex responses from surface EMG
    Richardson N Leao
    School of Biomedical Sciences, University of Sydney, Sydney, NSW, Australia
    J Neurosci Methods 133:115-25. 2004
    ..reflexes where excellent temporal resolution is required to identify the different latency components, and on the tonic stretch reflex (tonic SR) response to an ongoing perturbation that characteristically has a low signal to noise ratio.
  34. ncbi The monosynaptic Ia afferent pathway can largely explain the stretch duration effect of the long latency M2 response
    Jasper Schuurmans
    Laboratory for Neuromuscular Control, Department of Biomechanical Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
    Exp Brain Res 193:491-500. 2009
    ..It was concluded that the stretch duration effect of the M2 likely originates from the proposed Ia afferent mediated mechanism...
  35. ncbi Afferent mechanisms for the reflex response to imposed ankle movement in chronic spinal cord injury
    Brian D Schmit
    Sensory Motor Performance Program, Rehabilitation Instiute of Chicago, Chicago, IL, USA
    Exp Brain Res 145:40-9. 2002
    ..These afferents are activated preferentially as muscles are stretched to near maximum length, and they appear to have potent reflex effects in spinal cord injury...
  36. ncbi The influence of perturbation duration and velocity on the long-latency response to stretch in the biceps muscle
    Gwyn N Lewis
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, 345 E Superior St, Chicago, IL 60611, USA
    Exp Brain Res 163:361-9. 2005
    Different neural pathways are proposed to mediate the long-latency stretch reflex response (M2) in muscles spanning distal and proximal joints of the upper limb...
  37. pmc Long lasting effects of rTMS and associated peripheral sensory input on MEPs, SEPs and transcortical reflex excitability in humans
    Tetsuya Tsuji
    Sobell Department of Neurophysiology, Institute of Neurology, Queen Square, London WC1N 3BG, UK
    J Physiol 540:367-76. 2002
    ..These changes affect not only MEPs and SEPs but also EMG responses to more 'natural' inputs involved in transcortical stretch reflexes...
  38. ncbi Muscle, reflex and central components in the control of the ankle joint in healthy and spastic man
    T Sinkjaer
    Department of Medical Informatics and Image Analysis, Aalborg University, Denmark
    Acta Neurol Scand Suppl 170:1-28. 1997
    ..active muscle system around the joint (termed the non-reflex component), ii) the mechanical importance of the stretch reflex in the stretched and unloaded muscles, and iii) the supraspinal control of the stretch reflex...
  39. ncbi Stretch reflex and Hoffmann reflex responses to osteopathic manipulative treatment in subjects with Achilles tendinitis
    John N Howell
    Interdisciplinary Institute for Neuromuscular Research, Department of Biomedical Sciences, Irvine Hall, Ohio University College of Osteopathic Medicine, Athens, OH 45701 2979, USA
    J Am Osteopath Assoc 106:537-45. 2006
    Irvin M. Korr, PhD, hypothesized that sensitivity of the monosynaptic stretch reflex (ie, deep tendon reflex) plays a major role in the restriction-of-motion characteristic of somatic dysfunction, and that restoration of range of motion ..
  40. pmc Spindle and motoneuronal contributions to the phase advance of the human stretch reflex and the reduction of tremor
    P B Matthews
    University Laboratory of Physiology, Oxford, UK
    J Physiol 498:249-75. 1997
    1. The human stretch reflex is known to produce a phase advance in the EMG reflexly evoked by sinusoidal stretching, after allowing for the phase lag introduced by simple conduction...
  41. pmc The spasticity paradox: movement disorder or disorder of resting limbs?
    J A Burne
    University of Sydney, PO Box 170, Lidcombe, NSW 1825, Australia
    J Neurol Neurosurg Psychiatry 76:47-54. 2005
    Spasticity is defined/assessed in resting limbs, where increased stretch reflex activity and mechanical joint resistance are evident...
  42. ncbi Proposed cortical and sub-cortical contributions to the long-latency stretch reflex in the forearm
    Gwyn N Lewis
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL 60611, USA
    Exp Brain Res 156:72-9. 2004
    The short- and long-latency (SLSR, LLSR) components of the stretch reflex response were investigated in the forearm using a paired transcranial magnetic stimulation (TMS)-stretch reflex protocol...
  43. ncbi Biomechanical approaches applied to the lower and upper limb for the measurement of spasticity: a systematic review of the literature
    D E Wood
    Department of Medical Physics and Biomedical Engineering, Salisbury District Hospital, Salisbury, UK
    Disabil Rehabil 27:19-32. 2005
    ..To review and characterise biomechanical approaches for the measurement of spasticity as one component of the upper motor neurone syndrome...
  44. ncbi Impaired stretch reflex and joint torque modulation during spastic gait in multiple sclerosis patients
    T Sinkjaer
    Center for Sensory Motor Interaction, Aalborg University, Aalborg, Denmark
    J Neurol 243:566-74. 1996
    The modulation of the short latency stretch reflex of the soleus muscle during walking was investigated in seven spastic multiple sclerosis (MS) patients and nine healthy control subjects...
  45. ncbi Spasticity: clinical perceptions, neurological realities and meaningful measurement
    A D Pandyan
    School of Health and Rehabilitation Institute of Ageing, Keele University, UK
    Disabil Rehabil 27:2-6. 2005
  46. ncbi Sympathetic outflow enhances the stretch reflex response in the relaxed soleus muscle in humans
    Nis Hjortskov
    National Institute of Occupational Health, Dept of Physiology, Lersø Parkallé 105, DK 2100 Copenhagen, Denmark
    J Appl Physiol (1985) 98:1366-70. 2005
    ..suggest that an increase in sympathetic outflow can depress muscle spindle sensitivity and thus modulate the stretch reflex response...
  47. ncbi Neural and mechanical responses of the triceps surae muscle group after 1 h of repeated fast passive stretches
    Janne Avela
    Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyvaskyla, FIN 40100 Jyväskylä, Finland
    J Appl Physiol (1985) 96:2325-32. 2004
    ..In addition, altered material properties seem to affect proprioceptive feedback and, therefore, the motor unit activation in proportion to the contractile failure...
  48. ncbi Functional sparing of intrafusal muscle fibers in muscular dystrophies
    Jean Marc Aimonetti
    Laboratoire de Neurobiologie Humaine, UMR 6149, Universite de Provence CNRS, Pôle 3C Case B, Centre de Saint Charles 3, Place Victor Hugo, 13331 Marseille, France
    Muscle Nerve 32:88-94. 2005
    ..The reasons for a differential impairment of intrafusal and extrafusal muscle fibers and the clinical implications of the present results are discussed...
  49. ncbi The influence of increased muscle spindle sensitivity on Achilles tendon jerk and H-reflex in relaxed human subjects
    Christiane Rossi-Durand
    Laboratoire de Neurobiologie Integrative et Adaptative, UMR 6149, Universite de Provence CNRS, 52 Faculté de St Jérôme, Case 362, 13397 Marseille Cedex 20, France
    Somatosens Mot Res 19:286-95. 2002
    ..The possibility that a mental computation task may also operate by reducing the level of presynaptic inhibition is discussed on the basis of H-reflex facilitation...
  50. pmc The history of contraction of the wrist flexors can change cortical excitability
    Meg Stuart
    School of Biomedical Sciences, Faculty of Health Sciences, University of Sydney, Sydney, Australia
    J Physiol 545:731-7. 2002
    ....
  51. ncbi Plantar flexor stretch reflex responses to whole body loading/unloading during human walking
    Michael J Grey
    Center for Sensory Motor Interaction, Aalborg University, Fredrik Bajersvej 7 D3, DK 9220, Aalborg Øst, Denmark
    Eur J Neurosci 16:2001-7. 2002
    ..The objective of this study was to investigate the contribution of load receptor feedback to the compensatory stretch reflex response...
  52. ncbi Muscular torque generation during imposed joint rotation: torque-angle relationships when subjects' only goal is to make a constant effort
    P R Burgess
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Northwestern University Medical School, 345 East Superior Street, Room 1406, Chicago, IL 60611, USA
    Somatosens Mot Res 19:327-40. 2002
    ..falling torque) during the later part of an eccentric movement would not have occurred if a stabilizing stretch reflex had been present...
  53. ncbi Post-activation depression of the soleus H-reflex in the elderly
    C T Robertson
    Motor Control Laboratory, Department of Kinesiology, Program in Neural Science, HPER 112, Indiana University, Bloomington, IN 47405, USA
    Electromyogr Clin Neurophysiol 43:103-11. 2003
    ..This study examined the effect of age on the spinal mechanism post-activation depression (PD) and its relationship with postural sway...
  54. ncbi Reflex and non-reflex torque responses to stretch of the human knee extensors
    N Mrachacz-Kersting
    Center for Sensory Motor Interaction, Department of Health Science and Technology, Aalborg University, Fredrik Bajers Vej 7 D 3, 9220, Aalborg, Denmark
    Exp Brain Res 151:72-81. 2003
    ..This study implemented a unique hydraulic actuator to study the contributions of the knee extensor stretch reflex to the overall knee joint torque...
  55. ncbi Re-examination of the possible role of Golgi tendon organ and muscle spindle reflexes in proprioceptive neuromuscular facilitation muscle stretching
    Gordon Chalmers
    Department of Physical Education, Health and Recreation, Western Washington University, Bellingham, WA, USA
    Sports Biomech 3:159-83. 2004
    ..Further, following contraction of a stretched muscle, inhibition of the stretch reflex response lasts only 1 s...
  56. ncbi Reduction of common synaptic drive to ankle dorsiflexor motoneurons during walking in patients with spinal cord lesion
    N L Hansen
    Department of Physical Exercise and Sport Science and Division of Neurophysiology, The Panum Institute, Copenhagen University, Blegdamsvej 3, 2200 Copenhagen N, Denmark
    J Neurophysiol 94:934-42. 2005
    ..Such markers could have diagnostic and prognostic value in relation to the recovery of locomotion in patients with central motor lesions...
  57. ncbi Joint-afferent-mediated muscle activations yield a near-maximum torque response of the quadriceps
    Yasin Y Dhaher
    Department of Physical Medicine and Rehabilitation, Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Northwestern University, 345 E Superior Street, Room 1406, Chicago, IL 60611, USA
    J Neurosci Methods 133:1-17. 2004
    ..It was also concluded that this control strategy was near optimal when mediated by joint afferents...
  58. ncbi Paraspinal muscle reflex dynamics
    K P Granata
    Motion Analysis and Motor Performance Laboratory, University of Virginia, 2270 Ivy Road, Charlottesville, VA 22903, USA
    J Biomech 37:241-7. 2004
    ..Results agree with a simple systems model of the neuromechanical feedback behavior. The relative contribution of the reflex dynamics to spinal stability must be investigated in future research...
  59. ncbi Model of head-neck joint fast movements in the frontal plane
    A Pedrocchi
    NIT lab TBM Lab Dept of Bioengineering, Politecnico di Milano, P zza L Da Vinci, 32, 20133 Milan, Italy
    Biol Cybern 90:377-89. 2004
    ..limit of range of motion, gravitational field, and muscular torques due to voluntary activation as well as to stretch reflex depending on fusal afferences...
  60. ncbi Reflex reciprocal facilitation of antagonist muscles in spinal cord injury
    R Xia
    Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA
    Spinal Cord 43:14-21. 2005
    ..Electromyographic study in complete and incomplete spinal cord injury (SCI)...
  61. ncbi Review of motor control mechanisms underlying impact absorption from falls
    Marco Santello
    Department of Kinesiology and The Harrington Department of Bioengineering, PEBE 107B, Orange Street, Arizona State University, Tempe, AZ 85287 0404, USA
    Gait Posture 21:85-94. 2005
    ..Part III explores the proposed sensorimotor mechanisms underlying the control of landing. The review concludes with as yet unresolved questions and directions for future research...
  62. ncbi Effects of effort and EMG levels on short-latency stretch reflex modulation after varying background muscle contractions
    K Ogiso
    Department of Biology of Physical Activity, Neuromuscular Research Center, University of Jyvaskyla, FIN 40351, Jyvaskyla, Finland
    J Electromyogr Kinesiol 15:333-40. 2005
    It is known that the short-latency stretch reflex (SLSR) is modulated by the background muscle activity when it is elicited at matched torque levels...
  63. ncbi Acute passive stretching alters the mechanical properties of human plantar flexors and the optimal angle for maximal voluntary contraction
    Derek E Weir
    School of Health and Human Performance, Dalhousie University, Halifax, Nova Scotia, B3H3J5, Canada
    Eur J Appl Physiol 93:614-23. 2005
    ..05). The decrease in MVC during post-test(1) was attributed to changes in the mechanical properties of PF and not to reduced muscle activation...
  64. ncbi Differences in kinematic parameters and plantarflexor reflex responses between manual (Ashworth) and isokinetic mobilisations in spasticity assessment
    Giuseppe Rabita
    Laboratoire d Etudes de la Motricite Humaine, Faculté des Sciences du Sport et de l EP de l Université de Lille 2, France
    Clin Neurophysiol 116:93-100. 2005
    ..first to compare the kinematic parameters of imposed ankle mobilizations measured during Ashworth or isokinetic tests and, second, to better understand why the stretch reflex was more or less easily elicited by one method or the other.
  65. ncbi Neuromuscular modeling of spasticity in cerebral palsy
    James W Fee
    Alfred I duPont Hospital for Children, Wilmington, DE 19899, USA
    IEEE Trans Neural Syst Rehabil Eng 12:55-64. 2004
    ..Both active models and the passive model use separate parameters of stiffness and damping for the agonist and antagonist muscles...
  66. ncbi Reflex muscle contractions can be elicited by valgus positional perturbations of the human knee
    Y Y Dhaher
    Sensory and Motor Performance Program, Department of Physical Medicine and Rehabilitation, Rehabilitation Institute of Chicago, Chicago, IL 60611, USA
    J Biomech 36:199-209. 2003
    ..valgus joint deflection in the vasti muscles had longer onset latencies (range: 83-92ms) than did the stretch reflex in the same muscles (latencies: 29-31ms)...
  67. ncbi Control of single-joint movements with a reversal
    Rodrigo Gaiga Paulino
    Departamento de Fisiologia e Biofisica, Instituto de Biologia, Universidade de Campinas, Campinas, Sao Paulo, Brazil
    J Electromyogr Kinesiol 15:406-17. 2005
    ..However, they are compatible with the idea of peripheral factors, such as peripheral muscle and tendon elasticity, playing a major potentiating role in the SSC...
  68. ncbi Central suppression of regenerated proprioceptive afferents
    Valerie K Haftel
    Department of Physiology, Emory University, Atlanta, Georgia 30322, USA
    J Neurosci 25:4733-42. 2005
    ..Next, multiple elements in the sensorimotor circuit of the stretch reflex were examined in both the PNS and CNS...
  69. ncbi Vestibular influences on human postural control in combinations of pitch and roll planes reveal differences in spatiotemporal processing
    M G Carpenter
    Department of Kinesiology, University of Waterloo, Ontario, Canada
    Exp Brain Res 140:95-111. 2001
    ..Our results indicate that vestibular influences are earlier for the pitch plane and are directed to leg muscles, whereas roll control is later and focused on trunk muscles...
  70. ncbi Differences in coding provided by proprioceptive and vestibular sensory signals may contribute to lateral instability in vestibular loss subjects
    John H J Allum
    Department of ORL, University Hospital, Basel, Switzerland
    Exp Brain Res 184:391-410. 2008
    ....
  71. ncbi Decreased contribution from afferent feedback to the soleus muscle during walking in patients with spastic stroke
    Nazarena Mazzaro
    Center for Sensory Motor Interaction, Aalborg University, Denmark
    J Stroke Cerebrovasc Dis 16:135-44. 2007
    ..The SOL short-latency stretch reflex was facilitated in the patients (1.4 +/- 0.3) compared with the healthy volunteers (1.0 +/- 0.3, P = .05)...
  72. ncbi Concurrent changes in shortening reaction latency and reaction time of forearm muscles in post-stroke patients
    G Miscio
    Department of Neurology and Neurorehabilitation, Istituto Auxologico Italiano IRCCS, San Giuseppe Hospital, Piancavallo, Oggebbio VB, Italy
    Neurol Sci 26:402-10. 2006
    ..Frequency of occurrence and latency of stretch reflex (SR) and ShoRe, and RTs were measured from the electromyograms (EMG) of wrist flexor (FCR) and extensor (ECR) ..
  73. ncbi The tonic stretch reflex and spastic hypertonia after spinal cord injury
    Adam J Woolacott
    School of Biomedical Sciences, University of Sydney, PO Box 170, Lidcombe, NSW, 1825, Australia
    Exp Brain Res 174:386-96. 2006
    ..of joints to passive rotation and the possible origin of this increased resistance in the induced tonic stretch reflex (TSR)...
  74. ncbi Short latency heteronymous excitatory and inhibitory reflexes between antagonist and heteronymous muscles of the human shoulder and upper limb
    V M McClelland
    Developmental Neuroscience, Department of Child Health, University of Newcastle upon Tyne, Royal Victoria Infirmary, Queen Victoria Road, NE1 4LP, Newcastle upon Tyne, UK
    Brain Res 899:82-93. 2001
    ..Later excitatory and inhibitory reflexes with central delays of up to 15 ms also occurred. The probability of evoking excitation or inhibition in Tri or Bi changed with the different elbow positions...
  75. ncbi Electromechanical delay of the knee extensor muscles is not altered after harvesting the patellar tendon as a graft for ACL reconstruction: implications for sports performance
    A D Georgoulis
    Orthopaedic Sports Medicine Center, Department of Orthopaedic Surgery, University of Ioannina, P O BOX 1330, Ioannina 45110, Greece
    Knee Surg Sports Traumatol Arthrosc 13:437-43. 2005
    ..The EMD, as a component of the stretch reflex, is important for the utilization of the stored energy in the series elastic component and thus, optimal ..
  76. ncbi Changes in stretch reflex excitability are related to "giving way" symptoms in patients with anterior cruciate ligament rupture
    M Melnyk
    Institute of Orthopaedic Research and Biomechanics, University of Ulm, Ulm, Germany
    J Neurophysiol 97:474-80. 2007
    A rupture of the anterior cruciate ligament (ACL) usually leads to an altered stretch reflex excitability of the thigh muscles that stabilize the knee. The purpose of this study was to quantitatively assess reflex activity in the m...
  77. ncbi Age-related neuromuscular function during drop jumps
    M Hoffren
    Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyvaskyla, 40014 Jyvaskyla, Finland
    J Appl Physiol (1985) 103:1276-83. 2007
    ..These results suggest that age-specific muscle activation patterns as well as mechanical behaviors exist during DJs...
  78. ncbi Changes in the soleus stretch reflex at different pedaling frequencies and crank loads during pedaling
    Birgit Larsen
    Center for Sensory Motor Interaction SMI, Dept of Health Science and Technology, Aaborg University, Aalborg, Denmark
    Motor Control 10:265-79. 2006
    The influence of pedaling frequency and crank load on the sensitivity of the soleus short latency stretch reflex (SLR) was examined in nine healthy subjects during pedaling by the use of a custom-built robotic actuator...
  79. ncbi Anticipation of elbow joint perturbation shortens the onset time of the reflex EMG response in biceps brachii and triceps brachii
    Takayuki Koike
    Laboratory of Human Movement Science, Graduate School of Education, Hokkaido University, Japan
    Neurosci Lett 412:56-61. 2007
    ..The results indicate that the anticipation of an applied perturbation torque decreases the onset time of the reflex response in the Bb and Tb...
  80. ncbi Critical illness VR rehabilitation device (X-VR-D): evaluation of the potential use for early clinical rehabilitation
    H van de Meent
    University Medical Centre St Radboud, Department of Rehabilitation Medicine, Reinierpostlaan 4, POB 9191, Postal code 6500 HB Nijmegen, The Netherlands
    J Electromyogr Kinesiol 18:480-6. 2008
    ..We conclude that the X-VR-D is safe and effective to elicit consistent and reproducible muscle activity in trunk and leg muscles in healthy subjects and thus can be used as a training method...
  81. ncbi Modulation of reflex responses in hand muscles during rhythmical finger tasks in a subject with writer's cramp
    Ruiping Xia
    Department of Physiology, School of Medical Sciences, University of Bristol, Bristol, UK
    Exp Brain Res 177:573-8. 2007
    ..Results from this case study support clinically identified task-specific feature of focal hand dystonia...
  82. ncbi Voluntary modulation of human stretch reflexes
    Daniel Ludvig
    Department of Biomedical Engineering, McGill University, 3775 University Street, Montreal, QC, Canada H3A 2B4
    Exp Brain Res 183:201-13. 2007
    ..Thus, we conclude that the CNS can control reflex stiffness independently and so has great flexibility in adjusting the mechanical properties of a joint to meet functional requirements...
  83. pmc Temporal facilitation of spastic stretch reflexes following human spinal cord injury
    T George Hornby
    Department of Physical Therapy, University of Illinois at Chicago, 1919 W Taylor St 4th floor, M C 898, Chicago, IL 60612, USA
    J Physiol 571:593-604. 2006
    ..Evidence of stretch reflex facilitation post-SCI may reflect changes in underlying neuronal properties and provide insight into the ..
  84. pmc Effect of lower limb massage on electromyography and force production of the knee extensors
    A M Hunter
    Department of Sports Studies, University of Stirling, Stirling, Scotland, UK
    Br J Sports Med 40:114-8. 2006
    ..To evaluate the effect of massage on force production and neuromuscular recruitment...
  85. ncbi Interest of peripheral anesthetic blocks as a diagnosis and prognosis tool in patients with spastic equinus foot: a clinical and electrophysiological study of the effects of block of nerve branches to the triceps surae muscle
    Kevin Buffenoir
    Service de Neurochirurgie, Hopital Henri Mondor, Assistance Publique Hopitaux de Paris, Creteil, France
    Clin Neurophysiol 116:1596-600. 2005
    To evaluate clinically and electrophysiologically the effects of selective anesthetic blocks of motor nerve branches to the triceps surae muscle on lower limb stretch reflex in patients with spastic equinus foot.
  86. ncbi Inhibition from the plantar nerve to soleus muscle during the stance phase of walking
    Junichi Shoji
    Department of Rehabilitation Medicine, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku ku, Tokyo 160 8582, Japan
    Brain Res 1048:48-58. 2005
    ..It would minimize this inhibition during the stance phase of walking and might enhance soleus muscle activity via this reflex pathway for the support of weight...
  87. ncbi The suppression of the long-latency stretch reflex in the human tibialis anterior muscle by transcranial magnetic stimulation
    Johan van Doornik
    Center for Sensory Motor Interation, Aalborg University, Fredrik Bajers Vej 7 D3, DK 9220, Aalborg, Denmark
    Exp Brain Res 157:403-6. 2004
    The purpose of this study was to investigate the transcortical nature of the long-latency stretch reflex (M3) in the human tibialis anterior muscle...
  88. ncbi Effects of tendon vibration on the spatiotemporal characteristics of human locomotion
    Sabine M P Verschueren
    Motor Control Laboratory, Department of Kinesiology, Katholieke Universiteit Leuven, Tervuursevest 101, 3001 Leuven, Belgium
    Exp Brain Res 143:231-9. 2002
    ....
  89. ncbi Attenuation of the effect of remote muscle contraction on the soleus H-reflex during plantar flexion
    T Tazoe
    Division of Health and Sport Education, United Graduate School of Education, Tokyo Gakugei University, Chiba City, Japan
    Clin Neurophysiol 116:1362-9. 2005
    ....
  90. ncbi Short-latency stretch reflex modulation in response to varying soleus muscle activities
    K Ogiso
    Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyvaskyla, 40100, Jyvaskyla, Finland
    J Electromyogr Kinesiol 12:17-26. 2002
    ..investigation examined the effect of various types of background muscle contractions on the short-latency stretch reflex (SLR) elicited from the soleus muscle while subjects were in a sitting position...
  91. ncbi Relationship of spasticity to knee angular velocity and motion during gait in cerebral palsy
    Diane L Damiano
    Department of Neurology, Washington University, PO Box 8111, 660 S Euclid Avenue, St Louis, MO 63110, USA
    Gait Posture 23:1-8. 2006
    ....
  92. ncbi Reflexes in prior polio and their relation to weakness and anterior horn cell loss
    Arne Sandberg
    Department of Clinical Neurophysiology, Neurocentre, Uppsala University Hospital, SE 751 85 Uppsala, Sweden
    J Electromyogr Kinesiol 16:611-20. 2006
    ..The first is reduced excitability of monosynaptic connections in the motor neuron pool, which is related to weakness. The other is the presence of ILR as an indicator of interneuronal hyper-excitability, which is not related to weakness...
  93. ncbi In vivo assessment of elbow flexor work and activation during stretch-shortening cycle tasks
    D L Benoit
    University of Delaware, Department of Mechanical Engineering, Center for Biomedical Research, Spencer Labs 126, Newark, DE 19716, USA
    J Electromyogr Kinesiol 16:352-64. 2006
    ..The EMG driven model predicted well for all non-SSC trials, but significantly underestimated the work for SSC tasks, suggesting that the contractile component is directly involved in optimising muscle work during SSC tasks...
  94. ncbi Effects of changing wrist positions on finger flexor hypertonia in stroke survivors
    Sheng Li
    School of Physical Therapy and Rehabilitation Science, University of Montana, Missoula, 59812, USA
    Muscle Nerve 33:183-90. 2006
    ..to establish whether spastic hypertonia results from changes in intrinsic muscle properties or from altered stretch reflex properties...
  95. pmc Control of human mandibular posture during locomotion
    Timothy S Miles
    Discipline of Physiology, School of Molecular and Biomedical Science, The University of Adelaide, Adelaide, SA 5005, Australia
    J Physiol 554:216-26. 2004
    ..This is a unique demonstration of how a stretch reflex operates to maintain posture under entirely natural conditions.
  96. pmc H-reflex up-conditioning encourages recovery of EMG activity and H-reflexes after sciatic nerve transection and repair in rats
    Yi Chen
    Wadsworth Center, Laboratory of Neural Injury and Repair, New York State Department Health and State University of New York at Albany, Albany, New York 12201 0509, USA
    J Neurosci 30:16128-36. 2010
    Operant conditioning of the spinal stretch reflex or its electrical analog, the H-reflex, produces spinal cord plasticity and can thereby affect motoneuron responses to primary afferent input...
  97. pmc The cerebellum in maintenance of a motor skill: a hierarchy of brain and spinal cord plasticity underlies H-reflex conditioning
    Jonathan R Wolpaw
    Laboratory of Nervous System Disorders Wadsworth Center, New York State Department of Health and State University of New York at Albany, Albany, New York 12201 0509, USA
    Learn Mem 13:208-15. 2006
    Operant conditioning of the H-reflex, the electrical analog of the spinal stretch reflex, is a simple model of skill acquisition and involves plasticity in the spinal cord...
  98. ncbi Operant conditioning of H-reflex increase in spinal cord--injured rats
    X Y Chen
    Wadsworth Center, New York State Department of Health and State University of New York, Albany, USA
    J Neurotrauma 16:175-86. 1999
    Operant conditioning of the spinal stretch reflex or its electrical analog, the H-reflex, is a new model for exploring the mechanisms of long-term supraspinal control over spinal cord function...
  99. pmc Increased vasoconstriction predisposes to hyperpnea and postural faint
    Indu Taneja
    Department of Pediatrics, New York Medical College, Hawthorne, NY 10532, USA
    Am J Physiol Heart Circ Physiol 295:H372-81. 2008
    ..excessive sympathetic activation, increased respiratory tidal volume, and fainting involving the pulmonary stretch reflex. We studied 18 patients 13-21 yr old, 11 who fainted within 10 min of upright tilt (fainters) and 7 healthy ..
  100. ncbi Is lower leg proprioception essential for triggering human automatic postural responses?
    B R Bloem
    Department of Neurology, Leiden University Medical Centre, The Netherlands
    Exp Brain Res 130:375-91. 2000
    ..The trunk extended backwards at 80 ms, which was followed by forward flexion. The absent stretch reflex and weaker balance-correcting responses in patients produced changed trunk velocity profiles (mainly a reduced ..
  101. ncbi Corticospinal tract transection prevents operantly conditioned H-reflex increase in rats
    Xiang Yang Chen
    Laboratory of Nervous System Disorders, Wadsworth Center, New York State Department of Health and State University of New York, PO Box 509, Albany, New York 12201 0509, USA
    Exp Brain Res 144:88-94. 2002
    Operant conditioning of the H-reflex, the electrical analog of the spinal stretch reflex, in freely moving rats is a relatively simple model for studying long-term supraspinal control over spinal cord function...

Research Grants87

  1. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2006
    ..The spinal stretch reflex (SSR), or tendon jerk, which is mediated by a wholly spinal and largely monosynaptic pathway, is a model that ..
  2. EFFECT OF NEURAL CONSTRAINTS ON MOVEMENT IN STROKE
    Julius Dewald; Fiscal Year: 2009
    ..reflecting a loss of independent joint control, and hyperactivity of spinal reflexes, including the stretch reflex (spasticity)...
  3. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2009
    ..This requires models based on simple skills produced by defined and accessible neural circuitry. The spinal stretch reflex (SSR or tendon jerk) satisfies this requirement. Its spinal pathway is influenced by the brain...
  4. Changing a reflex to improve locomotion
    Aiko Thompson; Fiscal Year: 2010
    ..Altered spinal reflex pathways contribute to these problems. In this population, exaggerated stretch reflex and abnormal reflex modification of the ankle extensors are frequently observed...
  5. Spinal Reflex Conditioning and Locomotion
    JONATHAN WOLPAW; Fiscal Year: 2009
    ..The spinal stretch reflex (SSR or tendon jerk) satisfies this requirement...
  6. Spinal Reflex Conditioning and Locomotion
    JONATHAN RICKEL contact WOLPAW; Fiscal Year: 2010
    ..The spinal stretch reflex (SSR or tendon jerk) satisfies this requirement...
  7. Spinal Reflex Conditioning and Locomotion
    JONATHAN WOLPAW; Fiscal Year: 2009
    ..The spinal stretch reflex (SSR or tendon jerk) satisfies this requirement...
  8. EFFECT OF NEURAL CONSTRAINTS ON MOVEMENT IN STROKE
    Julius Dewald; Fiscal Year: 2007
    ..reflecting a loss of independent joint control, and hyperactivity of spinal reflexes, including the stretch reflex (spasticity)...
  9. EFFECT OF NEURAL CONSTRAINTS ON MOVEMENT IN STROKE
    Julius P Dewald; Fiscal Year: 2010
    ..reflecting a loss of independent joint control, and hyperactivity of spinal reflexes, including the stretch reflex (spasticity)...
  10. Non-linear Characterization of the Stretch Reflex Arc and its Neuromodulation
    AMAN BEHAL; Fiscal Year: 2011
    DESCRIPTION (provided by applicant): The Stretch Reflex Arc (SRA) is the simplest and most fundamental regulatory mechanism of posture control and muscle contraction...
  11. Non-linear Characterization of the Stretch Reflex Arc and its Neuromodulation
    AMAN BEHAL; Fiscal Year: 2009
    DESCRIPTION (provided by applicant): The Stretch Reflex Arc (SRA) is the simplest and most fundamental regulatory mechanism of posture control and muscle contraction...
  12. NEUROMUSCULAR CONTROL IN ACTION TREMOR
    Rodger Elble; Fiscal Year: 1990
    ..is difficult to explain on the basis of popular linear servo control theory and putative un- stable stretch reflex pathways. The dynamical complexities of essential tremor are best explained by its nonlinear properties...
  13. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN RICKEL WOLPAW; Fiscal Year: 2010
    ..This requires models based on simple skills produced by defined and accessible neural circuitry. The spinal stretch reflex (SSR or tendon jerk) satisfies this requirement. Its spinal pathway is influenced by the brain...
  14. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2009
    ..This requires models based on simple skills produced by defined and accessible neural circuitry. The spinal stretch reflex (SSR or tendon jerk) satisfies this requirement. Its spinal pathway is influenced by the brain...
  15. Neuromechanical changes caused by stroke & stretching
    Li Qun Zhang; Fiscal Year: 2004
    ..The long-term goals are to provide effective, convenient, and low-cost treatments of spastic limbs in neurologically impaired patients with quantitative outcome evaluation in multiple aspects. ..
  16. Neuromechanical changes caused by stroke & stretching
    Li Qun Zhang; Fiscal Year: 2006
    ..The long-term goals are to provide effective, convenient, and low-cost treatments of spastic limbs in neurologically impaired patients with quantitative outcome evaluation in multiple aspects. ..
  17. Neuromechanical changes caused by stroke & stretching
    Li Qun Zhang; Fiscal Year: 2003
    ..The long-term goals are to provide effective, convenient, and low-cost treatments of spastic limbs in neurologically impaired patients with quantitative outcome evaluation in multiple aspects. ..
  18. Neuromechanical changes caused by stroke & stretching
    Li Qun Zhang; Fiscal Year: 2005
    ..The long-term goals are to provide effective, convenient, and low-cost treatments of spastic limbs in neurologically impaired patients with quantitative outcome evaluation in multiple aspects. ..
  19. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 1990
    ..The H-reflex is the electrical analog of the spinal stretch reflex. Conditioned H-reflex change remains even after all supraspinal input is removed...
  20. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2002
    ..The spinal stretch reflex (SSR), or tendon jerk, which is mediated by a wholly spinal and largely monosynaptic pathway, is a model that ..
  21. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2003
    ..The spinal stretch reflex (SSR), or tendon jerk, which is mediated by a wholly spinal and largely monosynaptic pathway, is a model that ..
  22. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2004
    ..The spinal stretch reflex (SSR), or tendon jerk, which is mediated by a wholly spinal and largely monosynaptic pathway, is a model that ..
  23. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 2005
    ..The spinal stretch reflex (SSR), or tendon jerk, which is mediated by a wholly spinal and largely monosynaptic pathway, is a model that ..
  24. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 1993
    ..The H-reflex is the electrical analog of the spinal stretch reflex. Conditioned H-reflex change remains even after all supraspinal input is removed...
  25. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 1992
    ..The H-reflex is the electrical analog of the spinal stretch reflex. Conditioned H-reflex change remains even after all supraspinal input is removed...
  26. ADAPTIVE PLASTICITY IN THE SPINAL STRETCH REFLEX
    JONATHAN WOLPAW; Fiscal Year: 1999
    ..of the simplest behavior of the vertebrate CNS, the H- reflex, which is the electrical analog of the spinal stretch reflex. Once an animal has been conditioned, the reflex change persists even if all supraspinal input is removed...
  27. NEURAL CONTROL OF TRAINED MOVEMENT
    W Thach; Fiscal Year: 1991
    ..We will look for differences in stretch reflex EMG, spindle afferent, motor cortex and cerebellar neuronal activities as the subjects adapt to control - and ..
  28. NEURAL CONTROL OF TRAINED MOVEMENT
    W Thach; Fiscal Year: 1992
    ..We will look for differences in stretch reflex EMG, spindle afferent, motor cortex and cerebellar neuronal activities as the subjects adapt to control - and ..
  29. NEURAL CONTROL OF TRAINED MOVEMENT
    W Thach; Fiscal Year: 1990
    ..We will look for differences in stretch reflex EMG, spindle afferent, motor cortex and cerebellar neuronal activities as the subjects adapt to control - and ..
  30. SPASTICITY: MECHANISMS AND QUANTIFICATION
    WILLIAM RYMER; Fiscal Year: 1990
    ..Our subject group will consist largely of stroke and head trauma victims. First, stretch reflex dynamics and alterations in mechanical properties of elbow muscles and related soft-tissues will be estimated ..
  31. Stretch Reflex Contributions to Multijoint Coordination
    Eric J Perreault; Fiscal Year: 2011
    ..Our work will provide a mechanistic basis for understanding these impairments and may lead to enhanced, subject-specific paradigms for enhancing movement initiation and coordination in this population. ..
  32. Sympathetic Nerve Activity and Fine Motor Skills
    Minoru Shinohara; Fiscal Year: 2007
    ..To achieve these aims, MSNA, force fluctuations, single motor unit activity, stretch reflex, and H-reflex during steady contractions of a hand muscle will be measured when MSNA is experimentally ..
  33. Sympathetic Nerve Activity and Fine Motor Skills
    Minoru Shinohara; Fiscal Year: 2006
    ..To achieve these aims, MSNA, force fluctuations, single motor unit activity, stretch reflex, and H-reflex during steady contractions of a hand muscle will be measured when MSNA is experimentally ..
  34. Reflex control of multi-joint mechanics following stroke
    ERIC PERREAULT; Fiscal Year: 2003
    ..The focus of this particular study is on the stretch reflex contributions to the regulation of human arm mechanics, and how this spinally mediated regulation is altered ..
  35. Reflex control of multi-joint mechanics following stroke
    ERIC PERREAULT; Fiscal Year: 2004
    ..The focus of this particular study is on the stretch reflex contributions to the regulation of human arm mechanics, and how this spinally mediated regulation is altered ..
  36. Reflex control of multi-joint mechanics following stroke
    ERIC PERREAULT; Fiscal Year: 2005
    ..The focus of this particular study is on the stretch reflex contributions to the regulation of human arm mechanics, and how this spinally mediated regulation is altered ..
  37. Reflex control of multi-joint mechanics following stroke
    ERIC PERREAULT; Fiscal Year: 2006
    ..The focus of this particular study is on the stretch reflex contributions to the regulation of human arm mechanics, and how this spinally mediated regulation is altered ..
  38. Monoaminergic Drive and Discoordination Following Stroke
    Julius Dewald; Fiscal Year: 2005
    ..patterns, reflecting a loss of independent joint control, and hyperactivity of spinal reflexes including the stretch reflex (spasticity) and the flexion withdrawal reflex...
  39. Monoaminergic Drive and Discoordination Following Stroke
    Julius Dewald; Fiscal Year: 2007
    ..patterns, reflecting a loss of independent joint control, and hyperactivity of spinal reflexes including the stretch reflex (spasticity) and the flexion withdrawal reflex...
  40. Monoaminergic Drive and Discoordination Following Stroke
    Julius Dewald; Fiscal Year: 2006
    ..patterns, reflecting a loss of independent joint control, and hyperactivity of spinal reflexes including the stretch reflex (spasticity) and the flexion withdrawal reflex...
  41. Development of neural circuits for simple reflex behavior
    Thomas Jessell; Fiscal Year: 2000
    ..perhaps the simplest neural circuit is that coordinating sensory input with motor output-the monosynaptic stretch reflex circuit of the spinal cord...
  42. Development of neural circuits for simple reflex behavior
    Thomas Jessell; Fiscal Year: 2001
    ..perhaps the simplest neural circuit is that coordinating sensory input with motor output-the monosynaptic stretch reflex circuit of the spinal cord...
  43. Development of neural circuits for simple reflex behavior
    Thomas Jessell; Fiscal Year: 2002
    ..perhaps the simplest neural circuit is that coordinating sensory input with motor output-the monosynaptic stretch reflex circuit of the spinal cord...
  44. Development of neural circuits for simple reflex behavior
    Thomas Jessell; Fiscal Year: 1999
    ..perhaps the simplest neural circuit is that coordinating sensory input with motor output-the monosynaptic stretch reflex circuit of the spinal cord...
  45. SPINAL CONTROL OF BALANCE IN THE ELDERLY
    DAVID KOCEJA; Fiscal Year: 1999
    ..humans and primates have been shown to be successful at either increasing or decreasing the gain of the spinal stretch reflex. The purpose of these experiments will be to systematically examine the function of the elderly neuromuscular ..
  46. SPINAL CONTROL OF BALANCE IN THE ELDERLY
    DAVID KOCEJA; Fiscal Year: 2000
    ..humans and primates have been shown to be successful at either increasing or decreasing the gain of the spinal stretch reflex. The purpose of these experiments will be to systematically examine the function of the elderly neuromuscular ..
  47. PHYSIOLOGICAL EFFECTS OF INCOMPLETE SPINAL CORD INJURY
    WILLIAM RYMER; Fiscal Year: 2000
    ..is defined as an increased resistance of a limb to externally imposed joint extension, is caused by increased stretch reflex excitability...
  48. PHYSIOLOGICAL EFFECTS OF INCOMPLETE SPINAL CORD INJURY
    WILLIAM RYMER; Fiscal Year: 1999
    ..is defined as an increased resistance of a limb to externally imposed joint extension, is caused by increased stretch reflex excitability...
  49. PHYSIOLOGICAL EFFECTS OF INCOMPLETE SPINAL CORD INJURY
    WILLIAM RYMER; Fiscal Year: 1999
    ..is defined as an increased resistance of a limb to externally imposed joint extension, is caused by increased stretch reflex excitability...
  50. DEVELOPMENT OF SENSORY/MOTOR SYNAPSES IN THE SPINAL CORD
    Eric Frank; Fiscal Year: 1999
    ..is to study the development of one well characterized neuronal circuit in detail, the simple monosynaptic stretch reflex. Sensory neurons supplying stretch-sensitive spindle organs in muscles (Ia afferents) project into the spinal ..
  51. DEVELOPMENT OF SENSORY/MOTOR SYNAPSES IN THE SPINAL CORD
    Eric Frank; Fiscal Year: 1999
    ..is to study the development of one well characterized neuronal circuit in detail, the simple monosynaptic stretch reflex. Sensory neurons supplying stretch-sensitive spindle organs in muscles (Ia afferents) project into the spinal ..
  52. DEVELOPMENT OF SENSORY/MOTOR SYNAPSES IN THE SPINAL CORD
    Eric Frank; Fiscal Year: 2000
    ..is to study the development of one well characterized neuronal circuit in detail, the simple monosynaptic stretch reflex. Sensory neurons supplying stretch-sensitive spindle organs in muscles (Ia afferents) project into the spinal ..
  53. NEURONAL INTEGRATION IN CEREBELLAR SYSTEMS
    JAMES BLOEDEL; Fiscal Year: 1990
    ..Second, a separate series of studies will examine the action of dentato-bulbospinal pathways on segmental reflexes. The effects of activating this system on the stretch reflex and the cutaneomuscular reflexes will be assessed.
  54. PATTERNS OF INTEGRATION ALONG CEREBELLAR AFFERENT SYSTEM
    JAMES BLOEDEL; Fiscal Year: 1980
    ..Second, a separate series of studies will examine the action of dentato-bulbospinal pathways on segmental reflexes. The effects of activating this system on the stretch reflex and the cutaneomuscular reflexes will be assessed.
  55. COMPUTERIZED METHOD FOR QUANTIFYING MOVEMENT DISORDERS
    ALEXANDER KIPNIS; Fiscal Year: 1993
    ..which are perturbed by torque transients out of phase throughout the movement, both the long latency stretch reflex and volitional EMG can be assessed at different phases in the tracking...
  56. DEVELOPMENT AND REGENERATION OF SENSORY-MOTOR SYNAPSES
    Eric Frank; Fiscal Year: 1991
    ..Synaptic transmission between muscle spindle afferents and motoneurons, the pathways that mediates the simple stretch reflex, is inhibited by stimulation of other sensory afferents...
  57. DEVELOPMENT AND REGENERATION OF SENSORY-MOTOR SYNAPSES
    Eric Frank; Fiscal Year: 1990
    ..Synaptic transmission between muscle spindle afferents and motoneurons, the pathways that mediates the simple stretch reflex, is inhibited by stimulation of other sensory afferents...
  58. DEVELOPMENT AND REGENERATION OF SENSORY-MOTOR SYNAPSES
    Eric Frank; Fiscal Year: 1993
    ..Synaptic transmission between muscle spindle afferents and motoneurons, the pathways that mediates the simple stretch reflex, is inhibited by stimulation of other sensory afferents...
  59. DEVELOPMENT AND REGENERATION OF SENSORY-MOTOR SYNAPSES
    Eric Frank; Fiscal Year: 1992
    ..Synaptic transmission between muscle spindle afferents and motoneurons, the pathways that mediates the simple stretch reflex, is inhibited by stimulation of other sensory afferents...
  60. DESIGN FEATURES OF SEGMENTAL MOTOR SYSTEM
    Marc Binder; Fiscal Year: 1980
    ..The approach here is tripartite seeking to: (1) examine the phenomenon of intramuscular localization of the stretch reflex using electromyographic as well as mechanical measurements; (2) study the anatomical arrangements between ..
  61. Regeneration Fails to Restore Spinal Circuit Function
    Timothy C Cope; Fiscal Year: 2011
    ..This knowledge might also assist development of treatments for neurotrauma and neuropathies associated with sensory (proprioceptive) ataxia which share symptoms with the stretch areflexia under study in this project. ..
  62. DEVELOPMENT AND PLASTICITY OF SENSORY-MOTOR SYNAPSES
    Eric Frank; Fiscal Year: 1980
    ..cord between muscle sensory afferent fibers and motoneurons, connections that form the neuronal basis of the stretch reflex, provide an excellent experimental system for studying synaptic specificity at the level of single, ..
  63. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Chen; Fiscal Year: 1999
    ..of the simplest behavior of vertebrate CNS, the H-reflex, which is the electrical analog of the spinal stretch reflex. The responsible plasticity is in the spinal cord, and H-reflex conditioning is a good model for studying the ..
  64. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Yang Chen; Fiscal Year: 2009
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  65. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Yang Chen; Fiscal Year: 2009
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  66. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Yang Chen; Fiscal Year: 2008
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  67. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Chen; Fiscal Year: 2004
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  68. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Chen; Fiscal Year: 2000
    ..of the simplest behavior of vertebrate CNS, the H-reflex, which is the electrical analog of the spinal stretch reflex. The responsible plasticity is in the spinal cord, and H-reflex conditioning is a good model for studying the ..
  69. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Chen; Fiscal Year: 2005
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  70. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Chen; Fiscal Year: 2003
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  71. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Yang Chen; Fiscal Year: 2006
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  72. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Chen; Fiscal Year: 2002
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  73. SUPRASPINAL CONTROL OF SPINAL CORD PLASTICITY
    Xiang Yang Chen; Fiscal Year: 2010
    ..Operant conditioning of the spinal stretch reflex (or tendon jerk) or its electrical analog, the H-reflex, is a simple model for exploring long-term supraspinal ..
  74. Bilateral activation in upper-limb stroke rehabilitation
    Gwyn Lewis; Fiscal Year: 2006
    ....
  75. The utility of rTMS to enhance hand function in stroke
    Gwyn Lewis; Fiscal Year: 2007
    ..This will be applicable to a large population of US adults with deficits in hand function resulting from stroke. [unreadable] [unreadable] [unreadable]..
  76. Reflex Contributions to Joint Stability
    YASIN DHAHER; Fiscal Year: 2008
    ..abstract_text> ..
  77. Fatigue & Gender in Dynamic Stability and Low-Back Pain
    Kevin Granata; Fiscal Year: 2003
    ..The proposed effort represents the first to consider the biomechanics of dynamic neuromotor behavior in the control of spinal stability. ..
  78. Spinal Load and Stability during Pushing
    Kevin Granata; Fiscal Year: 2002
    ..e. the influence of the inertial mass of the pushed object, the velocity of movement, and compare the spinal loads and stability of pushing a cart versus pushing an overhead lift-assist device. ..
  79. Stretch Reflex Contributions to Multijoint Coordination
    ERIC PERREAULT; Fiscal Year: 2008
    ..is a hallmark of neuropathologies such as stroke and spinal cord injury, and there is evidence that changes in stretch reflex function may contribute to this discoordination...