feedback

Summary

Summary: A mechanism of communication within a system in that the input signal generates an output response which returns to influence the continued activity or productivity of that system.

Top Publications

  1. ncbi MicroRNA-mediated feedback and feedforward loops are recurrent network motifs in mammals
    John Tsang
    Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
    Mol Cell 26:753-67. 2007
  2. ncbi The coordination of movement: optimal feedback control and beyond
    Jorn Diedrichsen
    Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queens Square, London, UK
    Trends Cogn Sci 14:31-9. 2010
  3. ncbi Optimality principles in sensorimotor control
    Emanuel Todorov
    Department of Cognitive Science, University of California San Diego, La Jolla, California 92093 0515, USA
    Nat Neurosci 7:907-15. 2004
  4. ncbi Feedback inhibition of macrophage tumor necrosis factor-alpha production by tristetraprolin
    E Carballo
    Office of Clinical Research and Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
    Science 281:1001-5. 1998
  5. ncbi Competition between feedback loops underlies normal and pathological dynamics in the basal ganglia
    Arthur Leblois
    , Centre National de la Recherche Scientifique, , , 75270 Paris, France
    J Neurosci 26:3567-83. 2006
  6. ncbi Control of Dpp morphogen signalling by a secreted feedback regulator
    Robin Vuilleumier
    Institute for Biology I, Albert Ludwigs University of Freiburg, Hauptstrasse 1, D 79104 Freiburg, Germany
    Nat Cell Biol 12:611-7. 2010
  7. ncbi Neural mechanisms underlying auditory feedback control of speech
    Jason A Tourville
    Department of Cognitive and Neural Systems, Boston University, 677 Beacon St, Boston, MA 02215, USA
    Neuroimage 39:1429-43. 2008
  8. ncbi Neural correlates of verbal feedback processing: an fMRI study employing overt speech
    Ingrid K Christoffels
    Department of Cognitive Neuroscience, Faculty of Psychology, Maastricht University, The Netherlands
    Hum Brain Mapp 28:868-79. 2007
  9. ncbi MiR-34, SIRT1 and p53: the feedback loop
    Munekazu Yamakuchi
    Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
    Cell Cycle 8:712-5. 2009
  10. ncbi ERP correlates of feedback and reward processing in the presence and absence of response choice
    Nick Yeung
    Department of Psychology, Princeton University, Princeton, NJ 08544, USA
    Cereb Cortex 15:535-44. 2005

Research Grants

  1. ENSEMBLE MODEL OF STRESS ACTH-ADRENAL AXIS
    Johannes Veldhuis; Fiscal Year: 2005
  2. Ensemble Control of ACTH Secretion: Impact of Gender
    Johannes Veldhuis; Fiscal Year: 2007
  3. Age-Dependent Estrogen-Independent Mechanism of Hyposomatotropism in Women
    Johannes Veldhuis; Fiscal Year: 2007
  4. ACTIONS OF ESTROGEN IN MATURING GRAAFIAN FOLLICLES
    Johannes Veldhuis; Fiscal Year: 2001
  5. Ensemble Control of ACTH Secretion: Impact of Gender
    Johannes Veldhuis; Fiscal Year: 2009
  6. Ensemble Disruption of the GnRH-LH-Testosterone Axis
    Johannes Veldhuis; Fiscal Year: 2007
  7. THE AGING GH AXIS IN POSTMENOPAUSAL WOMEN
    Johannes Veldhuis; Fiscal Year: 2005
  8. ACTIONS OF ESTROGEN IN MATURING GRAAFIAN FOLLICLES
    Johannes Veldhuis; Fiscal Year: 2005
  9. ACTIONS OF TESTOSTERONE ON THE AGING MALE GH AXIS
    Johannes Veldhuis; Fiscal Year: 2007
  10. Analytical Reconstruction of Feedback Signaling in Aging Men
    Johannes Veldhuis; Fiscal Year: 2007

Detail Information

Publications185 found, 100 shown here

  1. ncbi MicroRNA-mediated feedback and feedforward loops are recurrent network motifs in mammals
    John Tsang
    Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
    Mol Cell 26:753-67. 2007
    ..Our results strongly suggest that coordinated transcriptional and miRNA-mediated regulation is a recurrent motif to enhance the robustness of gene regulation in mammalian genomes...
  2. ncbi The coordination of movement: optimal feedback control and beyond
    Jorn Diedrichsen
    Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queens Square, London, UK
    Trends Cogn Sci 14:31-9. 2010
    Optimal control theory and its more recent extension, optimal feedback control theory, provide valuable insights into the flexible and task-dependent control of movements...
  3. ncbi Optimality principles in sensorimotor control
    Emanuel Todorov
    Department of Cognitive Science, University of California San Diego, La Jolla, California 92093 0515, USA
    Nat Neurosci 7:907-15. 2004
    ..Traditional emphasis has been on optimizing desired movement trajectories while ignoring sensory feedback. Recent work has redefined optimality in terms of feedback control laws, and focused on the mechanisms that ..
  4. ncbi Feedback inhibition of macrophage tumor necrosis factor-alpha production by tristetraprolin
    E Carballo
    Office of Clinical Research and Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
    Science 281:1001-5. 1998
    ..These findings identify TTP as a component of a negative feedback loop that interferes with TNF-alpha production by destabilizing its messenger RNA...
  5. ncbi Competition between feedback loops underlies normal and pathological dynamics in the basal ganglia
    Arthur Leblois
    , Centre National de la Recherche Scientifique, , , 75270 Paris, France
    J Neurosci 26:3567-83. 2006
    ..the subthalamic nucleus, the internal pallidum (GPi), the thalamus, and the cortex are involved in closed feedback loops...
  6. ncbi Control of Dpp morphogen signalling by a secreted feedback regulator
    Robin Vuilleumier
    Institute for Biology I, Albert Ludwigs University of Freiburg, Hauptstrasse 1, D 79104 Freiburg, Germany
    Nat Cell Biol 12:611-7. 2010
    ..We show that Pent interacts with the glypican Dally to control Dpp distribution and provide evidence that proper establishment of the BMP morphogen gradient requires the inbuilt feedback loop embodied by Pent.
  7. ncbi Neural mechanisms underlying auditory feedback control of speech
    Jason A Tourville
    Department of Cognitive and Neural Systems, Boston University, 677 Beacon St, Boston, MA 02215, USA
    Neuroimage 39:1429-43. 2008
    The neural substrates underlying auditory feedback control of speech were investigated using a combination of functional magnetic resonance imaging (fMRI) and computational modeling...
  8. ncbi Neural correlates of verbal feedback processing: an fMRI study employing overt speech
    Ingrid K Christoffels
    Department of Cognitive Neuroscience, Faculty of Psychology, Maastricht University, The Netherlands
    Hum Brain Mapp 28:868-79. 2007
    Speakers use external auditory feedback to monitor their own speech. Feedback distortion has been found to increase activity in the superior temporal areas...
  9. ncbi MiR-34, SIRT1 and p53: the feedback loop
    Munekazu Yamakuchi
    Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
    Cell Cycle 8:712-5. 2009
    ..Based on this observation, we propose a positive feedback loop, in which p53 induces expression of miR-34a which suppresses SIRT1, increasing p53 activity.
  10. ncbi ERP correlates of feedback and reward processing in the presence and absence of response choice
    Nick Yeung
    Department of Psychology, Princeton University, Princeton, NJ 08544, USA
    Cereb Cortex 15:535-44. 2005
    The feedback negativity is a component of the event-related brain potential that is elicited by feedback stimuli associated with unfavorable outcomes...
  11. ncbi Delay in feedback repression by cryptochrome 1 is required for circadian clock function
    Maki Ukai-Tadenuma
    Laboratory for Systems Biology, RIKEN Center for Developmental Biology, Chuo Ku, Kobe, Hyogo, Japan
    Cell 144:268-81. 2011
    Direct evidence for the requirement of delay in feedback repression in the mammalian circadian clock has been elusive...
  12. ncbi The decision to enter mitosis: feedback and redundancy in the mitotic entry network
    Arne Lindqvist
    Department of Medical Oncology, University Medical Center Utrecht, 3584 CG Utrecht, Netherlands
    J Cell Biol 185:193-202. 2009
    ..Within this network, several positive feedback loops can amplify cyclin B-Cdk1 activation to ensure complete commitment to a mitotic state once the decision to ..
  13. ncbi CPR quality improvement during in-hospital cardiac arrest using a real-time audiovisual feedback system
    Benjamin S Abella
    Department of Emergency Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
    Resuscitation 73:54-61. 2007
    ..We hypothesized that real-time feedback during CPR would improve the performance of chest compressions and ventilations during in-hospital cardiac arrest.
  14. ncbi Dependence of stem cell fate in Arabidopsis on a feedback loop regulated by CLV3 activity
    U Brand
    Institut fur Entwicklungsbiologie, Universitat zu Koln, Gyrhofstrabetae 17, D 50923 Köln, Germany
    Science 289:617-9. 2000
    ..fate of stem cells in plant meristems is governed by directional signaling systems that are regulated by negative feedback. In Arabidopsis thaliana, the CLAVATA (CLV) genes encode the essential components of a negative, stem cell-..
  15. ncbi Neural correlates of auditory feedback control in human
    A Toyomura
    Research Institute of Science and Technology for Society, Japan Science and Technology Agency, Japan
    Neuroscience 146:499-503. 2007
    Auditory feedback plays an important role in natural speech production...
  16. ncbi Positive feedback and noise activate the stringent response regulator rel in mycobacteria
    Kamakshi Sureka
    Department of Chemistry, Bose Institute, Kolkata, India
    PLoS ONE 3:e1771. 2008
    ..two distinct peaks corresponding to low (L) and high (H) expression states, and further establish that a positive feedback loop involving the mprAB operon along with stochastic gene expression are responsible for the phenotypic ..
  17. ncbi An fMRI study of verbal self-monitoring: neural correlates of auditory verbal feedback
    Cynthia H Y Fu
    Institute of Psychiatry, King s College London, De Crespigny Park, London SE5 8AF, UK
    Cereb Cortex 16:969-77. 2006
    ..According to the model, if the expected verbal feedback matches the perceived feedback, then there would be no change in activation in the lateral temporal cortices...
  18. ncbi Evidence for the flexible sensorimotor strategies predicted by optimal feedback control
    Dan Liu
    Department of Cognitive Science, University of California, San Diego, La Jolla, California 92093 0515, USA
    J Neurosci 27:9354-68. 2007
    ..relationship between the task and the strategy most suitable for accomplishing it lies at the core of our optimal feedback control theory of coordination...
  19. ncbi Real-time contributions of auditory feedback to avian vocal motor control
    Jon T Sakata
    Keck Center for Integrative Neuroscience, Department of Physiology, University of California, San Francisco, San Francisco, California 94143-0444, USA
    J Neurosci 26:9619-28. 2006
    ..Evidence strongly indicates that auditory feedback contributes in real time to human speech, but similar contributions of feedback to birdsong remain unclear...
  20. ncbi Thyroid hormone exerts negative feedback on hypothalamic type 4 melanocortin receptor expression
    Stéphanie Decherf
    Departement Regulations, Centre National de la Recherche Scientifique Unité Mixte de Recherche 7221, Evolution des Regulations Endocriniennes, Museum national d histoire naturelle, Paris, France
    Proc Natl Acad Sci U S A 107:4471-6. 2010
    ..These facts led us to test the hypothesis that energy homeostasis should require negative feedback by T(3) on Mc4r expression...
  21. ncbi A systematic review of selected interventions for worksite health promotion. The assessment of health risks with feedback
    Robin E Soler
    National Center for Health Marketing, CDC, Atlanta, Georgia 30333, USA
    Am J Prev Med 38:S237-62. 2010
    ..report provides recommendations on the effectiveness of interventions that use an Assessment of Health Risks with Feedback (AHRF) when used alone or as part of a broader worksite health promotion program to improve the health of ..
  22. ncbi Computational motor control: feedback and accuracy
    Emmanuel Guigon
    INSERM U742, ANIM, Université Pierre et Marie Curie UPMC Paris 6, 9, quai Saint Bernard, 75005 Paris, France
    Eur J Neurosci 27:1003-16. 2008
    ..in which motor variability results from the interplay between sensory and motor execution noises in an optimal feedback-controlled system...
  23. ncbi Cortical factor feedback model for cellular locomotion and cytofission
    Shin I Nishimura
    Department of Computational Science and Engineering, Nagoya University, Nagoya, Japan
    PLoS Comput Biol 5:e1000310. 2009
    ..In this paper, we propose a hypothesis that the positive feedback mechanism working through the inhomogeneous distribution of regulatory proteins underlies this variety of cell ..
  24. ncbi Receiving a summary of the results of a trial: qualitative study of participants' views
    Mary Dixon-Woods
    Social Science Group, Department of Health Sciences, University of Leicester, Leicester LE1 6TP
    BMJ 332:206-10. 2006
    ..To explore trial participants' responses to receiving a summary of the results of a trial in pregnancy...
  25. ncbi Error and feedback processing in children with ADHD and children with Autistic Spectrum Disorder: an EEG event-related potential study
    Yvonne Groen
    Department of Psychiatry, University Medical Center Groningen, University of Groningen, P O Box 660, 9700 AR Groningen, The Netherlands
    Clin Neurophysiol 119:2476-93. 2008
    ....
  26. ncbi Feedforward and feedback inhibition in neostriatal GABAergic spiny neurons
    James M Tepper
    Center for Molecular and Behavioral Neuroscience, Rutgers University, 197 University Avenue, Newark, NJ 07102, USA
    Brain Res Rev 58:272-81. 2008
    ..The feedback circuit comprises the numerous spiny projection neurons and their interconnections via local axon collaterals...
  27. ncbi Direct neural sensory feedback and control of a prosthetic arm
    Gurpreet Singh Dhillon
    Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
    IEEE Trans Neural Syst Rehabil Eng 13:468-72. 2005
    ..We believe this to be the first demonstration of direct neural feedback from and direct neural control of an artificial arm in amputees.
  28. ncbi A sensory feedback circuit coordinates muscle activity in Drosophila
    Cynthia L Hughes
    Molecular Neurobiology Laboratory, The Salk Institute, 10010 N Torrey Pines Rd, La Jolla, CA 92037, USA
    Mol Cell Neurosci 35:383-96. 2007
    ..The bipolar dendrites and class I mds send a feedback signal to the CNS that keeps the contraction wave progressing quickly, allowing smooth forward movement...
  29. ncbi Interconnected feedback loops in the Neurospora circadian system
    K Lee
    Department of Genetics, Dartmouth Medical School, Hanover, NH 03755 3844, USA
    Science 289:107-10. 2000
    ..FRQ thus plays dual roles in the Neurospora clock and thereby, with WC-1, forms a second feedback loop that would promote robustness and stability in this circadian system...
  30. ncbi Stretch-induced changes in heart rate and rhythm: clinical observations, experiments and mathematical models
    P Kohl
    University Laboratory of Physiology, Oxford, UK
    Prog Biophys Mol Biol 71:91-138. 1999
    ..direction of the cross-talk between cardiac electrical and mechanical activity is referred to as mechano-electric feedback (MEF)...
  31. ncbi Meta-analysis: audit and feedback features impact effectiveness on care quality
    Sylvia J Hysong
    Houston VA HSR and D Center of Excellence, Health Services Research and Development Service, Department of Veterans Affairs Medical Center, TX, USA
    Med Care 47:356-63. 2009
    Audit and feedback (A&F) has long been used to improve quality of care, albeit with variable results...
  32. ncbi Nitric oxide acts in a positive feedback loop with BDNF to regulate neural progenitor cell proliferation and differentiation in the mammalian brain
    Aiwu Cheng
    Laboratory of Neurosciences, National Institute on Aging Gerontology Research Center, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA
    Dev Biol 258:319-33. 2003
    ....
  33. ncbi Hes6 acts in a positive feedback loop with the neurogenins to promote neuronal differentiation
    N Koyano-Nakagawa
    The Salk Institute for Biological Studies, PO Box 85800, La Jolla, CA 92186 5800, USA
    Development 127:4203-16. 2000
    ..The properties of Hes6 distinguish it from other members of the WRPW-bHLH family in vertebrates, and suggest that it acts in a positive-feedback loop with the proneural bHLH proteins to promote neuronal differentiation.
  34. ncbi Noise propagation and signaling sensitivity in biological networks: a role for positive feedback
    Gil Hornung
    Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
    PLoS Comput Biol 4:e8. 2008
    ..Negative feedback can buffer this type of noise, but this buffering comes at the expense of an even greater reduction in signaling ..
  35. ncbi Modular cell biology: retroactivity and insulation
    Domitilla Del Vecchio
    Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, USA
    Mol Syst Biol 4:161. 2008
    ..To attenuate the effect of retroactivity, we propose a feedback mechanism inspired by the design of amplifiers in electronics...
  36. ncbi Compensatory responses to loudness-shifted voice feedback during production of Mandarin speech
    Hanjun Liu
    Department of Communication Sciences and Disorders, Northwestern University, 2240 Campus Drive, Evanston, Illinois 60208, USA
    J Acoust Soc Am 122:2405-12. 2007
    Previous studies have demonstrated that perturbations in voice pitch or loudness feedback lead to compensatory changes in voice F(0) or amplitude during production of sustained vowels...
  37. ncbi A c-Myc-SIRT1 feedback loop regulates cell growth and transformation
    Jian Yuan
    Division of Oncology Research, Department of Oncology, Mayo Clinic, Rochester, MN 55905, USA
    J Cell Biol 185:203-11. 2009
    ..Overall, our experiments identify a c-Myc-SIRT1 feedback loop in the regulation of c-Myc activity and cellular transformation, supporting/suggesting a role of SIRT1 in ..
  38. ncbi Vocalization-induced enhancement of the auditory cortex responsiveness during voice F0 feedback perturbation
    Roozbeh Behroozmand
    Speech Physiology Laboratory, Department of Communication Science and Disorders, Northwestern University, 2240 Campus Drive, Evanston, IL 60208, USA
    Clin Neurophysiol 120:1303-12. 2009
    The present study investigated whether self-vocalization enhances auditory neural responsiveness to voice pitch feedback perturbation and how this vocalization-induced neural modulation can be affected by the extent of the feedback ..
  39. ncbi Representation of internal models of action in the autistic brain
    Courtney C Haswell
    Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
    Nat Neurosci 12:970-2. 2009
    ..autistic brain built a stronger than normal association between self-generated motor commands and proprioceptive feedback; furthermore, the greater the reliance on proprioception, the greater the child's impairments in social function ..
  40. ncbi Clinical teaching improves with resident evaluation and feedback
    Keith Baker
    Harvard Medical School, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
    Anesthesiology 113:693-703. 2010
    The literature is mixed on whether evaluation and feedback to clinical teachers improves clinical teaching...
  41. ncbi Feedback control of the protein kinase TAK1 by SAPK2a/p38alpha
    Peter C F Cheung
    MRC Protein Phosphorylation Unit, School of Life Sciences, MSI WTB complex, Dow Street, University of Dundee, Dundee DD1 5EH, UK
    EMBO J 22:5793-805. 2003
    ..Our results suggest that TAB1 participates in a SAPK2a/p38alpha-mediated feedback control of TAK1, which not only limits the activation of SAPK2a/p38alpha but synchronizes its activity with other ..
  42. ncbi A randomized trial of computer-based reminders and audit and feedback to improve HIV screening in a primary care setting
    V Sundaram
    VA Palo Alto Healthcare System, Palo Alto, CA, USA
    Int J STD AIDS 20:527-33. 2009
    ..The objective of the study was to determine whether an intervention with computer-based reminders and feedback would increase screening for HIV in a Department of Veterans Affairs (VA) health-care system...
  43. ncbi Enabling multi-level relevance feedback on PubMed by integrating rank learning into DBMS
    Hwanjo Yu
    CSE Department, POSTECH, Pohang, South Korea
    BMC Bioinformatics 11:S6. 2010
    ..This paper proposes a novel multi-level relevance feedback system for PubMed, called RefMed, which supports both ad-hoc keyword queries and a multi-level relevance feedback ..
  44. ncbi Development of intraoperative electrochemical detection: wireless instantaneous neurochemical concentration sensor for deep brain stimulation feedback
    Jamie J Van Gompel
    Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota 55905, USA
    Neurosurg Focus 29:E6. 2010
    ..on a second-to-second time scale or for chronically used implanted recordings, as would be required for DBS feedback. Electrochemical detection techniques such as fast-scan cyclic voltammetry (FSCV) and amperometry have until ..
  45. ncbi PTH increases FGF23 gene expression and mediates the high-FGF23 levels of experimental kidney failure: a bone parathyroid feedback loop
    Vardit Lavi-Moshayoff
    Minerva Center for Calcium and Bone Metabolism, Nephrology Services, Hadassah Hebrew Univ Medical Center, PO Box 12000, Jerusalem, Israel 91120
    Am J Physiol Renal Physiol 299:F882-9. 2010
    ..The effect of PTH on FGF23 completes a bone-parathyroid endocrine feedback loop. Importantly, secondary hyperparathyroidism is essential for the high-FGF23 levels in early CKD.
  46. ncbi Feedback inhibition of the unfolded protein response by GADD34-mediated dephosphorylation of eIF2alpha
    I Novoa
    Skirball Institute of Biomolecular Medicine, Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
    J Cell Biol 153:1011-22. 2001
    ..These findings implicate GADD34-mediated dephosphorylation of eIF2alpha in a negative feedback loop that inhibits stress-induced gene expression, and that might promote recovery from translational inhibition ..
  47. ncbi HD-ZIP III activity is modulated by competitive inhibitors via a feedback loop in Arabidopsis shoot apical meristem development
    Youn Sung Kim
    Department of Chemistry, Seoul National University, Seoul 151 742, Korea
    Plant Cell 20:920-33. 2008
    ..We therefore propose that HD-ZIP III activity in regulating SAM development is modulated by, among other things, a feedback loop involving the competitive inhibitors ZPR3 and ZPR4.
  48. ncbi Multiple parietal reach regions in humans: cortical representations for visual and proprioceptive feedback during on-line reaching
    Flavia Filimon
    Department of Cognitive Science, University of California, San Diego, La Jolla, California 92093, USA
    J Neurosci 29:2961-71. 2009
    Reaching toward a visual target involves at least two sources of information. One is the visual feedback from the hand as it approaches the target...
  49. ncbi Estimating the sources of motor errors for adaptation and generalization
    Max Berniker
    Rehabilitation Institute of Chicago, Department of Physical Medicine and Rehabilitation, Northwestern University, 345 E Superior Street, ONT 931, Chicago, Illinois 60611, USA
    Nat Neurosci 11:1454-61. 2008
    ..We provide evidence that many movement-generalization phenomena emerge from a strategy by which the nervous system estimates the sources of our motor errors...
  50. ncbi How much feedback is necessary for learning to suture?
    A O'Connor
    Department of Mechanical Engineering, Tufts University, 200 College Avenue, Medford, Massachusetts 02155, USA
    Surg Endosc 22:1614-9. 2008
    ..In addition, the overall workload of a trainee during training would decrease as skills improved, especially when KR and coaching were provided...
  51. ncbi Feedback signals from cat's area 21a enhance orientation selectivity of area 17 neurons
    C Wang
    Discipline of Anatomy and Histology, School of Medical Sciences and Bosch Institute F13, The University of Sydney, Sydney, NSW 2006, Australia
    Exp Brain Res 182:479-90. 2007
    We have studied the contribution of feedback signals originating from one of the "form-processing" extrastriate cortical areas, area 21a (A21a), to orientation selectivity of single neurons in the ipsilateral area 17 (A17)...
  52. ncbi Effects of visual force feedback on robot-assisted surgical task performance
    Carol E Reiley
    Engineering Research Center and Computer Integrated Surgery Systems and Technology, Johns Hopkins University, Baltimore, MD, USA
    J Thorac Cardiovasc Surg 135:196-202. 2008
    Direct haptic (force or tactile) feedback is negligible in current surgical robotic systems. The relevance of haptic feedback in robot-assisted performances of surgical tasks is controversial...
  53. ncbi From single-cell genetic architecture to cell population dynamics: quantitatively decomposing the effects of different population heterogeneity sources for a genetic network with positive feedback architecture
    Nikos V Mantzaris
    Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, USA
    Biophys J 92:4271-88. 2007
    ..that can quantitatively isolate both heterogeneity sources and applied it to a genetic network with positive feedback architecture...
  54. ncbi Role of corticofugal feedback in hearing
    Nobuo Suga
    Department of Biology, Washington University, One Brookings Drive, St Louis, MO 63130, USA
    J Comp Physiol A Neuroethol Sens Neural Behav Physiol 194:169-83. 2008
    ..The corticofugal system forms multiple feedback loops...
  55. ncbi A randomized clinical trial of clinician feedback to improve quality of care for inner-city children with asthma
    Meyer Kattan
    Department of Pediatrics, Mount Sinai School of Medicine, New York, NY 10029, USA
    Pediatrics 117:e1095-103. 2006
    ..Barriers impede translating recommendations for asthma treatment into practice, particularly in inner cities where asthma morbidity is highest...
  56. ncbi Internalizing agency of self-action: perception of one's own hand movements depends on an adaptable prediction about the sensory action outcome
    Matthis Synofzik
    Department of Cognitive Neurology, Hertie Institute of Clinical Brain Research, University of Tubingen, Tubingen, Germany
    J Neurophysiol 96:1592-601. 2006
    ..Twenty human subjects performed out-and-back pointing movements that were fed back visually. Feedback was initially presented in spatiotemporal correspondence with respect to the actual finger position, but later ..
  57. ncbi Adaptive control of saccades via internal feedback
    Haiyin Chen-Harris
    Departments of Biomedical Engineering and Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, USA
    J Neurosci 28:2804-13. 2008
    Ballistic movements like saccades require the brain to generate motor commands without the benefit of sensory feedback. Despite this, saccades are remarkably accurate...
  58. ncbi Neural correlates of developmental differences in risk estimation and feedback processing
    Linda van Leijenhorst
    Center for Mind and Brain, University of California at Davis, USA
    Neuropsychologia 44:2158-70. 2006
    ..The task was designed to tap two important aspects of decision-making: risk estimation and feedback processing...
  59. ncbi Interactions between auditory and somatosensory feedback for voice F0 control
    Charles R Larson
    Department of Communication Sciences and Disorders, Northwestern University, 2240 Campus Drive, Evanston, IL 60208, USA
    Exp Brain Res 187:613-21. 2008
    Previous studies have demonstrated the importance of both kinesthetic and auditory feedback for control of voice fundamental frequency (F0)...
  60. ncbi Human midbrain sensitivity to cognitive feedback and uncertainty during classification learning
    A R Aron
    Dept. of Psychology and Brain Research Institute, University of California-Los Angeles, CA 90065, USA
    J Neurophysiol 92:1144-52. 2004
    ..classification learning in humans using functional magnetic resonance imaging to examine the effects of feedback and uncertainty...
  61. ncbi Amplification of dopaminergic signaling by a positive feedback loop
    A Nishi
    Department of Physiology, Kurume University School of Medicine, 67 Asahi Machi, Kurume, Fukuoka 830 0011, Japan
    Proc Natl Acad Sci U S A 97:12840-5. 2000
    ..Together, these results indicate that via positive feedback mechanisms, Cdk5 signaling and PKA signaling are mutually antagonistic.
  62. ncbi Persistence of motor adaptation during constrained, multi-joint, arm movements
    R A Scheidt
    Department of Biomedical Engineering, Northwestern University, Evanston, IL 60622, USA
    J Neurophysiol 84:853-62. 2000
    ....
  63. ncbi Support vector machine-based classification scheme for myoelectric control applied to upper limb
    Mohammadreza Asghari Oskoei
    Department of Computing and Electronic Systems, University of Essex, Colchester CO4 3SQ, UK
    IEEE Trans Biomed Eng 55:1956-65. 2008
    ..The entropy of the output of the classifier is also examined as an online index to evaluate the correctness of classification; this can be used by online training for long-term myoelectric control operations...
  64. ncbi Synchronization of two coupled self-excited systems with multi-limit cycles
    H G Enjieu Kadji
    Laboratory of Modelling and Simulation in Engineering and Biological Physics, Faculty of Science, University of Yaounde I, Box 812, Yaounde, Cameroon
    Chaos 17:033113. 2007
    ..The stability boundaries and expressions of the synchronization time are obtained using the properties of the Hill equation. Numerical simulations validate and complement the results of analytical investigations...
  65. ncbi Global synchronization in lattices of coupled chaotic systems
    Jonq Juang
    Department of Applied Mathematics, National Chiao Tung University, Hsinchu, Taiwan 300, Republic of China
    Chaos 17:033111. 2007
    ..Moreover, by merely checking the structure of the vector field of the single oscillator, we shall be able to determine if the system is globally synchronized...
  66. ncbi Spatiotemporal dynamics in a ring of N mutually coupled self-sustained systems
    H G Enjieu Kadji
    Laboratory of Modelling and Simulation in Engineering and Biological Physics, Faculty of Science, University of Yaounde I, Box 812, Yaounde, Cameroon
    Chaos 17:033109. 2007
    ..Numerical simulations validate and complement the results of analytical investigations. The influences of coupling parameter mismatch on the forecasted stability boundaries are also highlighted...
  67. ncbi Operating regimes of signaling cycles: statics, dynamics, and noise filtering
    Carlos Gomez Uribe
    Harvard MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
    PLoS Comput Biol 3:e246. 2007
    ..Numerical simulations show that our analytical results hold well even for noise of large amplitude. We suggest that noise filtering and tunability make signaling cycles versatile components of more elaborate cell-signaling pathways...
  68. ncbi Estimation of hidden state variables of the Intracranial system using constrained nonlinear Kalman filters
    Xiao Hu
    Brain Monitoring and Modeling Laboratory, Division of Neurosurgery, University of California, Los Angeles, CA 90034, USA
    IEEE Trans Biomed Eng 54:597-610. 2007
    ..Finally, the state estimator combined with the I/O configuration that has both ICP and CBFV as outputs can potentially estimate the lumped cerebral arterial radii, which are not measurable in a typical clinical environment...
  69. ncbi Periodicity and chaos in electrically coupled Hindmarsh-Rose neurons
    R Erichsen
    Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, 91501 970 Porto Alegre, RS, Brazil
    Phys Rev E Stat Nonlin Soft Matter Phys 74:061906. 2006
    ..At the strong coupling regime in-phase chaotic evolution dominates, but windows with complex periodic behavior are also present...
  70. ncbi Simulating closed- and open-loop voluntary movement: a nonlinear control-systems approach
    Paul R Davidson
    Department of Electrical and Electronic Engineering, University of Canterbury, Christchurch, New Zealand
    IEEE Trans Biomed Eng 49:1242-52. 2002
    In many recent human motor control models, including feedback-error learning and adaptive model theory (AMT), feedback control is used to correct errors while an inverse model is simultaneously tuned to provide accurate feedforward ..
  71. ncbi The frequency of human, manual adjustments in balancing an inverted pendulum is constrained by intrinsic physiological factors
    Ian D Loram
    Institute for Biophysical and Clinical Research into Human Movement, Manchester Metropolitan University, Alsager ST7 2HL, UK
    J Physiol 577:417-32. 2006
    ..The spring bias was controlled by a sensitive joystick via a servo motor and accurate visual feedback was provided on an oscilloscope...
  72. ncbi Manually controlled human balancing using visual, vestibular and proprioceptive senses involves a common, low frequency neural process
    Martin Lakie
    Applied Physiology Research Group, School of Sport and Exercise Sciences, University of Birmingham, UK
    J Physiol 577:403-16. 2006
    ..We predict that similar processes may be identified in the control of standing...
  73. ncbi Coexisting chaotic and periodic dynamics in clock escapements
    Francis C Moon
    Joseph Ford Professor of Mechanical Engineering, Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York, NY 14853 7501, USA
    Philos Trans A Math Phys Eng Sci 364:2539-63. 2006
    ..This model is shown to exhibit a strange attractor in the structural vibration of the clock. The internal feedback between the oscillator and the escapement structure is similar to anti-control of chaos models.
  74. ncbi Experimental evidence of anomalous phase synchronization in two diffusively coupled Chua oscillators
    Syamal Kumar Dana
    Instrument Division, Indian Institute of Chemical Biology, Jadavpur, Kolkata 700032, India
    Chaos 16:023111. 2006
    ..All experimental results are supported by numerical simulations of two coupled Chua models...
  75. ncbi Fractional dynamics of coupled oscillators with long-range interaction
    Vasily E Tarasov
    Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow 119992, Russia
    Chaos 16:023110. 2006
    ..Particular solutions for fractional time-dependent complex Ginzburg-Landau (or nonlinear Schrodinger) equation are derived. These solutions are interpreted as synchronized states and localized structures of the oscillatory medium...
  76. ncbi Chaotic synchronization through coupling strategies
    Shuguang Guan
    Temasek Laboratories, National University of Singapore, 5 Sports Drive 2, 117508 Singapore and Beijing-Hong Kong-Singapore Joint Center of Nonlinear and Complex Systems (Singapore, National University of Singapore, 117543 Singapore
    Chaos 16:023107. 2006
    ..Moreover, experimental verification based on electronic circuits has been carried out to support the numerical results. Our work provides a method to obtain robust CS in synchronization-based chaos communications...
  77. ncbi A new method to realize cluster synchronization in connected chaotic networks
    Zhongjun Ma
    College of Sciences, Shanghai University, Shanghai, 200444, China
    Chaos 16:023103. 2006
    ..The effectiveness of the method is illustrated by an example...
  78. ncbi Chaos quasisynchronization induced by impulses with parameter mismatches
    Chuandong Li
    Department of Computer Science, Chongqing University, 400044, People's Republic of China
    Chaos 16:023102. 2006
    ..Numerical simulations on the chaotic Chua's circuit are presented to verify the theoretical results...
  79. ncbi Motor adaptation to single force pulses: sensitive to direction but insensitive to within-movement pulse placement and magnitude
    Michael S Fine
    Department of Biomedical Engineering, Washington University, 1 Brookings Dr, Campus Box 1097, Saint Louis, Missouri 63130, USA
    J Neurophysiol 96:710-20. 2006
    ..used transient pulses of force, distributed pseudo-randomly throughout a movement set, to study how the timing of feedback within a movement influenced subsequent predictive control...
  80. ncbi Introduction: dissipative localized structures in extended systems
    Mustapha Tlidi
    Universite Libre de Bruxelles, Optique Nonlinéaire Théorique, CP 231 Campus Plaine, Bruxelles 1050, Belgium
    Chaos 17:037101. 2007
    ..In particular, localized structures could be used as "bits" for parallel information storage and processing...
  81. ncbi Nonvariational real Swift-Hohenberg equation for biological, chemical, and optical systems
    G Kozyreff
    Optique Nonlinéaire Théorique, Universite Libre De Bruxelles U L B, Campus de la Plaine C P 231, Boulevard du Triomphe, B 1050 Bruxelles, Belgium
    Chaos 17:037103. 2007
    ..Finally, we derive the equation on a general class of partial differential systems...
  82. ncbi A cascade control approach for a class of biomedical systems
    Moisés Ortiz-Vargas
    Escuela de Ingeniería, Univ of Panamericana, Mexico DF
    Conf Proc IEEE Eng Med Biol Soc 1:4420-3. 2006
    An approach for the robust feedback control of a class of biomedical systems in chained form is presented. The control approach is based on modeling error compensation techniques and a recursive cascade scheme...
  83. ncbi Comment on "Exponential stabilization of chaotic systems with delay by periodically intermittent control" [Chaos 17, 013103 (2007)]
    Shaojiang Deng
    College of Computer Science, Chongqing University, 400030, China
    Chaos 18:018101. 2008
    ..In the referenced paper, there is a technical carelessness in the second lemma, and it is highlighted here to avoid possible failure when the result is used to design the intermittent controller for nonlinear systems...
  84. ncbi Multimode dynamics in a network with resource mediated coupling
    D E Postnov
    Physics Department, Saratov State University, Astrakhanskaya str 83, Saratov, 410026, Russia
    Chaos 18:015114. 2008
    ..At higher coupling strengths, one typically observes spatial clustering involving a few oscillating units. We describe three different scenarios according to which the cluster can slide along the chain as the bias voltage changes...
  85. ncbi Stochastic phase dynamics and noise-induced mixed-mode oscillations in coupled oscillators
    Na Yu
    Departments of Mathematic, University of British Columbia, Vancouver, British Columbia, V6T 1Z2 Canada
    Chaos 18:015112. 2008
    ..The phase difference between the coupled oscillators in the localized solution, coexisting with in-phase or antiphase solutions, is clearly represented in the stochastic phase dynamics...
  86. ncbi Noise-induced mixed-mode oscillations in a relaxation oscillator near the onset of a limit cycle
    Cyrill B Muratov
    Department of Mathematical Sciences, New Jersey Institute of Technology, Newark, New Jersey 07102, USA
    Chaos 18:015111. 2008
    ..These scenarios are corroborated by numerical simulations...
  87. ncbi Nonlocal branches of cycles, bistability, and topologically persistent mixed mode oscillations
    E Bouse
    Department of Applied Mathematics, University College Cork, Cork, Ireland
    Chaos 18:015109. 2008
    ..This natural scenario should be supplemented by simple and constructive criteria of existence, and methods of localization, of such S-shaped structures. These criteria are the main focus of the paper...
  88. ncbi Mixed-mode oscillations and slow manifolds in the self-coupled FitzHugh-Nagumo system
    Mathieu Desroches
    Bristol Centre for Applied Nonlinear Mathematics, Department of Engineering Mathematics, University of Bristol, Queen s Building, Bristol BS8 1TR, United Kingdom
    Chaos 18:015107. 2008
    ..In particular, our techniques allow us to find and visualize canard solutions as the intersection curves of the attracting and repelling slow manifolds...
  89. ncbi Introduction to focus issue: mixed mode oscillations: experiment, computation, and analysis
    Morten Brons
    Department of Mathematics, Technical University of Denmark, DK 2800 Kongens Lyngby, Denmark
    Chaos 18:015101. 2008
    ..This focus issue presents a series of articles on theoretical, numerical, and experimental aspects of MMOs. The applications cover physical, chemical, and biological systems...
  90. ncbi Recurrence analysis of strange nonchaotic dynamics in driven excitable systems
    E J Ngamga
    Nonlinear Dynamics Group, Institute of Physics, University of Potsdam, Potsdam 14415, Germany
    Chaos 18:013128. 2008
    ..In particular, we show the performance of the recurrence measures in detecting transitions to SNAs in quasiperiodically forced excitable systems and experimental time series...
  91. ncbi Synchronizability of network ensembles with prescribed statistical properties
    Shuguang Guan
    Temasek Laboratories, National University of Singapore, 117508 Singapore
    Chaos 18:013120. 2008
    ..Our work reveals that the synchronizability of a network can be significantly affected by the local pattern of connections, and the homogeneity of degree can greatly enhance network synchronizability for networks of a random nature...
  92. ncbi Time shifts and correlations in synchronized chaos
    Jonathan N Blakely
    U S Army Research, Engineering, and Development Command, AMSRD AMR WS ST, Redstone Arsenal, Alabama 35898, USA
    Chaos 18:013117. 2008
    ..Finally, we show that the transfer function can be exploited to design novel coupling schemes that significantly improve the correlation and increase the maximum achievable time shift...
  93. ncbi Quantifying the synchronizability of externally driven oscillators
    Andrzej Stefański
    Division of Dynamics, Technical University of Lodz, Stefanowskiego 1 15, 90 924 Lodz, Poland
    Chaos 18:013106. 2008
    ..Finally, the idea of effective response Lyapunov exponents, which allows us to quantify the synchronizability in case of slightly different response oscillators, is introduced...
  94. ncbi Optimization of synchronization in complex clustered networks
    Liang Huang
    Department of Electrical Engineering, Arizona State University, Tempe, Arizona 85287, USA
    Chaos 18:013101. 2008
    ..This phenomenon provides possible principles for optimal synchronization on complex clustered networks. We provide extensive numerical evidence and an analytic theory to establish the generality of this phenomenon...
  95. ncbi Sensitivity derivatives for flexible sensorimotor learning
    M N Abdelghani
    Department of Physiology, University of Toronto, Toronto, Ontario, Canada
    Neural Comput 20:2085-111. 2008
    ..The mechanism, which we call implicit supervision, helps explain the flexibility and speed of sensorimotor learning and our ability to cope with high-dimensional work spaces and tools...
  96. ncbi Optimality, stochasticity, and variability in motor behavior
    Emmanuel Guigon
    INSERM U742, ANIM, Université Pierre et Marie Curie UPMC Paris 6, 9, quai Saint Bernard, 75005, Paris, France
    J Comput Neurosci 24:57-68. 2008
    ....
  97. ncbi Point-based rigid-body registration using an unscented Kalman filter
    Mehdi Hedjazi Moghari
    Department of Electrical and Computer Engineering, Queen s University, Kingston ON K7L 3N6, Canada
    IEEE Trans Med Imaging 26:1708-28. 2007
    ..It is also shown that the proposed registration algorithm is more robust than the ICP registration algorithm in terms of outliers in data sets and initial misalignment between the two data sets...
  98. ncbi A biologically inspired modular structure to control the sit-to-stand transfer of a biped robot
    M Emadi Andani
    School of Electrical and Computer Engineering ECE, University of Tehran, Iran
    Conf Proc IEEE Eng Med Biol Soc 2007:3016-9. 2007
    ..Our results showed that only two modules out of four were selected to control the STS task. Responsibility of controlling the task was switched between the two modules around the seat-off moment...
  99. ncbi Nonlinear analysis of cerebral hemodynamic and intracranial pressure signals for characterization of autoregulation
    Xiao Hu
    Brain Monitoring and Modeling Laboratory, Division of Neurosurgery, University of California, Los Angeles 90034, USA
    IEEE Trans Biomed Eng 53:195-209. 2006
    ..On the other hand, complex patterns of C measure evolution were observed among 14 cases of propofol data indicating a nontrivial effect of propofol on the dependency of CBFV on ABP...
  100. ncbi Discretization of frequencies in delay coupled oscillators
    Serhiy Yanchuk
    Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstrasse 39, D 10117 Berlin, Germany
    Phys Rev E Stat Nonlin Soft Matter Phys 72:036205. 2005
    ..Due to the delay, the allowed frequencies of the oscillators are shown to be discretized. The phenomenon is observed in the case when the delay is much larger than the characteristic period of the solitary uncoupled oscillator...
  101. ncbi Application of cross time-frequency analysis to postural sway behavior: the effects of aging and visual systems
    Yong June Shin
    Department of Electrical Engineering, The University of South Carolina, Columbia, SC 29208, USA
    IEEE Trans Biomed Eng 52:859-68. 2005
    In this paper, the effects of visual feedback and aging on postural sway systems and signals are investigated by analyzing the transient phase difference between "input" and "output" which correspond to center of ..

Research Grants137 found, 100 shown here

  1. ENSEMBLE MODEL OF STRESS ACTH-ADRENAL AXIS
    Johannes Veldhuis; Fiscal Year: 2005
    ..sheep, horse and human, the stress-responsive corticotropic-adrenal axis can be viewed as a dynamically adaptive feedback system supervised by key brain (hypothalamic) regulatory centers...
  2. Ensemble Control of ACTH Secretion: Impact of Gender
    Johannes Veldhuis; Fiscal Year: 2007
    ..receptor (ER and AR); (2) graded " imposition of delayed (integral) and rapid (rate-sensitive) cortisol negative feedback during adrenal steroidogenic blockade; (3) joint dose-dependent stimulation of ACTH secretion by human CRH and ..
  3. Age-Dependent Estrogen-Independent Mechanism of Hyposomatotropism in Women
    Johannes Veldhuis; Fiscal Year: 2007
    ..Hypothesis III: Age and E2 availability jointly modulate concentration-dependent negative feedback by free (protein-unbound) IGF-I, thus controlling mean daily GH secretion...
  4. ACTIONS OF ESTROGEN IN MATURING GRAAFIAN FOLLICLES
    Johannes Veldhuis; Fiscal Year: 2001
    ....
  5. Ensemble Control of ACTH Secretion: Impact of Gender
    Johannes Veldhuis; Fiscal Year: 2009
    ..receptor (ER and AR); (2) graded " imposition of delayed (integral) and rapid (rate-sensitive) cortisol negative feedback during adrenal steroidogenic blockade; (3) joint dose-dependent stimulation of ACTH secretion by human CRH and ..
  6. Ensemble Disruption of the GnRH-LH-Testosterone Axis
    Johannes Veldhuis; Fiscal Year: 2007
    ..Interpreted from this vantage, published literature, laboratory experiments, background data and ensemble feedback/feed forward simulations predict that hydroandrogenemia in aging men could arise nonexclusively by way of: (i) ..
  7. THE AGING GH AXIS IN POSTMENOPAUSAL WOMEN
    Johannes Veldhuis; Fiscal Year: 2005
    ..Hypothesis III: Estrogen add back can override GH's autonegative feedback restraint of GH secretion...
  8. ACTIONS OF ESTROGEN IN MATURING GRAAFIAN FOLLICLES
    Johannes Veldhuis; Fiscal Year: 2005
    ..Understanding such fundamental interactions is important to the rational design of alternative strategies to interrupt normal and rescue impaired steroidogenesis in the maturing Graafian follicle and corpus luteum. ..
  9. ACTIONS OF TESTOSTERONE ON THE AGING MALE GH AXIS
    Johannes Veldhuis; Fiscal Year: 2007
    ..suppress GH secretory-burst mass in part by: (i) elevating somatostatin (SS) outflow under high (nighttime) GH feedback; and (ii) augmenting SSergic restraint under low (daytime) GH feedback...
  10. Analytical Reconstruction of Feedback Signaling in Aging Men
    Johannes Veldhuis; Fiscal Year: 2007
    Self-adaptive (homeostatic) biological systems operate via repeated incremental feedback and feed forward signaling adjustments to maintain species, gender and age-defined physiological norms...
  11. Novel Active Repressor Model of Human LDL-Receptor Regulation
    Johannes Veldhuis; Fiscal Year: 2007
    ..If so, targeting this gene product could potentially shift cholesterol accumulation away from arteries toward the liver. This would represent a new treatment approach for patients with atherosclerotic disease. ..
  12. Mechanistic bases for age-related androgen deficiency
    Johannes Veldhuis; Fiscal Year: 2007
    ..HYPOTHESIS III: Reduced negative feedback by testosterone, which unleashes high-frequency, low- amplitude and irregular LH release...
  13. Age-Dependent Estrogen-Independent Mechanism of Hyposomatotropism in Women
    Johannes Veldhuis; Fiscal Year: 2009
    ..Hypothesis III: Age and E2 availability jointly modulate concentration-dependent negative feedback by free (protein-unbound) IGF-I, thus controlling mean daily GH secretion...
  14. Aging Systems in Geriatrics: the Male Gonadal Axis
    Johannes D Veldhuis; Fiscal Year: 2010
    ..pituitary luteinizing hormone (LH) secretion;(ii) impaired Leydig-cell responsiveness to LH pulses;and reduced feedback by Te onto GnRH and LH secretion...
  15. Age-Dependent Estrogen-Independent Mechanism of Hyposomatotropism in Women
    Johannes D Veldhuis; Fiscal Year: 2010
    ..Hypothesis III: Age and E2 availability jointly modulate concentration-dependent negative feedback by free (protein-unbound) IGF-I, thus controlling mean daily GH secretion...
  16. ACTIONS OF ESTROGEN IN MATURING GRAAFIAN FOLLICLES
    Johannes Veldhuis; Fiscal Year: 1993
    ..The preceding studies should contribute important new insights into and further developments in fertility regulation in man, domestic animals, and endangered wild species...
  17. AGING GH AXIS IN POSTMENOPAUSAL WOMEN
    Johannes Veldhuis; Fiscal Year: 2000
    ..3. Estrogen replacement in postmenopausal women curtails inhibitory auto- feedback of the hypothalamo-pituitary GH unit otherwise exerted by IGF-I and/or GH...
  18. Ensemble Control of ACTH Secretion: Impact of Gender
    Johannes D Veldhuis; Fiscal Year: 2010
    ..receptor (ER and AR);(2) graded " imposition of delayed (integral) and rapid (rate-sensitive) cortisol negative feedback during adrenal steroidogenic blockade;(3) joint dose-dependent stimulation of ACTH secretion by human CRH and AVP;..
  19. ACTIONS OF ESTROGEN IN MATURING GRAAFIAN FOLLICLES
    Johannes Veldhuis; Fiscal Year: 1990
    ..Accordingly, these investigations are likely to contribute to new approaches to fertility regulation in the human, domestic animal or endangered wild species...
  20. Tests of neurobiologically-inspired Model of the Motivation-Learning Interface
    W TODD TODD MADDOX; Fiscal Year: 2010
    ..This proposal reunites research on motivation and cognition to better understanding their effects on functioning in clinical populations. ..
  21. Effectiveness Trial of Attention Shaping for Schizophrenia
    Steven M Silverstein; Fiscal Year: 2010
    ....
  22. Stochastic Models of Cell Cycle Regulation in Eukaryotes
    John J Tyson; Fiscal Year: 2010
    ..Hence, a validated stochastic model of the eukaryotic cell cycle is essential to progress in the field of molecular systems biology. ..
  23. 3/5-Cognitive Neuroscience Task Reliability & Clinical Applications Consortium
    Steven Silverstein; Fiscal Year: 2009
    ..Thus, we need to improve our methods for detecting and enhancing cognitive function in schizophrenia in order to help individuals with this illness lead more productive and fulfilling lives. ..
  24. The Process of Group Therapy for Cocaine Dependence
    Paul Crits Christoph; Fiscal Year: 2007
    ..degree of patient participation, quality of participation, quality of the therapeutic alliance, and frequency of feedback (and positive feedback), as assessed in group drug counseling sessions, as predictors of treatment outcome...
  25. Stochastic Models of Cell Cycle Regulation in Eukaryotes
    John Tyson; Fiscal Year: 2007
    ..g., embyronic development, tissue regeneration, wound healing, and carcinogenesis. ..
  26. Effectiveness Trial of Attention Shaping for Schizophrenia
    Steven Silverstein; Fiscal Year: 2009
    ....
  27. Psychotherapy for Major Depression in the Community
    Paul Crits Christoph; Fiscal Year: 2007
    ..created will work synergistically with existing programs at Penn that focuses on psychotherapy research (Center for the Study of Psychotherapy) and mental health services research (Center for Mental Health Policy and Services Research) ..
  28. 3/5-Cognitive Neuroscience Task Reliability & Clinical Applications Consortium
    Steven M Silverstein; Fiscal Year: 2010
    ..Thus, we need to improve our methods for detecting and enhancing cognitive function in schizophrenia in order to help individuals with this illness lead more productive and fulfilling lives. ..
  29. Video-Based Delivery of HIV Test Information for Spanish-Speaking Latinos
    Roland C Merchant; Fiscal Year: 2010
    ..The ultimate aim of this project is to help reduce the transmission of HIV through streamlined yet effective HIV testing approaches. ..
  30. Motion Sensor Array for Vestibular-deficient Individuals
    Conrad Wall; Fiscal Year: 2005
    ....
  31. Problem Solving Environment for Modeling the Cell Cycle
    John Tyson; Fiscal Year: 2002
    ..and some outstanding collaborators (Sible and Cross, experimental cell cycle research; Kitano and Bolouri, software development for molecular cell biology; and Kohn, bioinformatics of mammalian cell cycle controls). ..
  32. Volunteer Activities on Long-Term Care Residents
    Hon Yuen; Fiscal Year: 2002
    ..It is expected that findings will support the activity theory of aging and validate the beneficial effects of residents in LTC facilities participating in structured volunteer activities. ..
  33. ORAL HEALTH IN AFRICAN AMERICAN ADOLESCENTS WITH DIABETES
    Hon Yuen; Fiscal Year: 2002
    ..subproject abstract not provided ..
  34. Brief Intervention for Drug Misuse for the Emergency Department (BIDMED)
    Ted D Nirenberg; Fiscal Year: 2010
    ..SBIRT in the ED for drug misuse has the potential for reaching people during a "teachable moment" during an ED visit that might be related to drug misuse. ..
  35. PITUITARY CELLS TO STUDY MALE INFERTILITY
    STEPHEN WINTERS; Fiscal Year: 2002
    ..abstract_text> ..
  36. Oral Health in People with Systemic Sclerosis
    Hon Yuen; Fiscal Year: 2007
    ....
  37. Brief Intervention for Drug Misuse for the Emergency Department (BIDMED)
    Roland Merchant; Fiscal Year: 2009
    ..SBIRT in the ED for drug misuse has the potential for reaching people during a "teachable moment" during an ED visit that might be related to drug misuse. ..
  38. Proprioceptive feedback gain modulation during movement
    Mark Shapiro; Fiscal Year: 2007
    ..The two main mechanisms by which movement is produced are predictive feedforward control and sensory feedback control. The interplay of these two mechanisms in single-joint goal-oriented movements will be studied...