Research Topics
| K M NewellSummaryAffiliation: Pennsylvania State University Country: USA Publications
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Detail Information
Publications
Stochastic processes in postural center-of-pressure profilesK M Newell
Pennsylvania State University, University Park 16802, USA
Exp Brain Res 113:158-64. 1997..It appears that the nature of the stochastic properties of the random walk of the center-of-pressure trajectory in quiet, upright standing remains to be elucidated...- The changing effector pattern of tardive dyskinesia during the course of neuroleptic withdrawalK M Newell
Department of Kinesiology, Pennsylvania State University, University Park 16802, USA
Exp Clin Psychopharmacol 9:262-8. 2001..These findings suggest that TD is a dynamic disorder associated with changes in both severity and effector pattern over time... - Variability of stereotypic body-rocking in adults with mental retardationK M Newell
Pennsylvania State University, USA
Am J Ment Retard 104:279-88. 1999.... - Dynamics of self-injurious behaviorsK M Newell
Department of Kinesiology, The Pennsylvania State University, University Park 16802, USA
Am J Ment Retard 104:11-21. 1999..The impact force of SIBs as a percentage of body weights are near the low end of forces generated in boxing blows and karate hits... - Regularity of force tremor in Parkinson's diseaseD E Vaillancourt
Department of Kinesiology, The Pennsylvania State University, 146 Rec Hall, University Park, PA 16802, USA
Clin Neurophysiol 112:1594-603. 2001.... - Intermittency in the visual control of force in Parkinson's diseaseD E Vaillancourt
Department of Kinesiology, Pennsylvania State University, 266 Recreation Building, University Park, PA 16802, USA
Exp Brain Res 138:118-27. 2001..The findings suggest that the basal ganglia are important for adjusting the amplitude of motor output at 1-2 Hz during visuo-motor feedback control... - The dynamics of resting and postural tremor in Parkinson's diseaseD E Vaillancourt
Department of Kinesiology, The Pennsylvania State University, University Park, PA 16802, USA
Clin Neurophysiol 111:2046-56. 2000..The study examines the time and frequency structure of Parkinson's disease tremor in patients that exhibit no clinical signs of tremor... - Amplitude changes in the 8-12, 20-25, and 40 Hz oscillations in finger tremorD E Vaillancourt
Department of Kinesiology, The State University, University Park, PA 16802, USA
Clin Neurophysiol 111:1792-801. 2000..The study examined the amplitude and frequency modulation of the 8-12, 20-25, and 40 Hz frequencies of tremor to determine the degree to which increments of load affect the amplitude of these neural rhythms... - Assessment of the adiabatic transformability hypothesis in a ball-bouncing task. mbrodel@freewwweb.comM P Broderick
Department of Kinesiology, Pennsylvania State University, USA
Biol Cybern 82:433-42. 2000..In the segmental frame of reference, we found evidence of differences in energy-kinematic relations in the Q values between skill levels... - On learning to move randomlyK M Newell
Department of Kinesiology, The Pennsylvania State University, University Park, 16802, USA
J Mot Behav 32:314-20. 2000.... - Age differences in noise and variability of isometric force productionK M Deutsch
Department of Kinesiology, 266 Recreation Building, The Pennsylvania State University, University Park, PA 16802, USA
J Exp Child Psychol 80:392-408. 2001.... - Dimensional change in motor learningK M Newell
Department of Kinesiology, The Pennsylvania State University, 146 Recreation Building, University Park, PA 16802, USA
Hum Mov Sci 20:695-715. 2001..The central issue determining directional change in dimension is whether the dimensionality of the task relevant intrinsic dynamic needs to be increased or decreased to realize new task demands... - Noise, information transmission, and force variabilityA B Slifkin
Department of Biobehavioral Health, Pennsylvania State University, University Park 16802 3903, USA
J Exp Psychol Hum Percept Perform 25:837-51. 1999..These findings indicate that force variability is not directly related to noise but that force output noisiness is positively correlated with the amount of information transmitted... - Visual control of isometric force in Parkinson's diseaseD E Vaillancourt
Department of Kinesiology, The Pennsylvania State University, 266 Recreation Building, University Park, PA 16802, USA
Neuropsychologia 39:1410-8. 2001..It is proposed that the increased force decay in PD does not result from sensory reflex deficits but from higher order sensory-motor memory processes... - Risk factors for tardive dyskinesia in a large population of youths and adultsB A Wszola
Department of Kinesiology, Pennsylvania State University, University Park 16802, USA
Exp Clin Psychopharmacol 9:285-96. 2001..These findings reveal further complex interactions to the risk factors for TD... 
Adaptive force control in grasping as a function of level of developmental disabilityR L Sprague
Department of Kinesiology, University of Illinois at Urbana Champaign, Illinois, USA
J Intellect Disabil Res 53:797-806. 2009..The adaptation to the task demands of grasping (grip mode and object mass) was investigated as a function of level of developmental disability...- Force and timing variability in rhythmic unimanual tappingD Sternad
Department of Kinesiology, The Pennsylvania State University, University Park, 16802, USA
J Mot Behav 32:249-67. 2000..The interdependencies of force and time are discussed with respect to the challenges they provide for an oscillator-based account... - Time scales in motor learning and developmentK M Newell
Department of Kinesiology, Pennsylvania State University, 146 Recreation Building, University Park, Pennsylvania 16802, USA
Psychol Rev 108:57-82. 2001..This unified dynamical account of the functions and time scales in motor learning and development offers several new hypotheses for future research on the nature of change in learning theory... - Intermittency of visual information and the frequency of rhythmical force productionJ J Sosnoff
Department of Kinesiology, The Pennsylvania State University, 266 Recreation Hall, University Park, PA 16802, USA
J Mot Behav 37:325-34. 2005..The effective use of intermittent visual information in force output was mediated by task frequency, and that mediation was reflected in the differential emphasis of feedback and feedforward processes over multiple timescales of control... - Practice effects on local and global dynamics of the ski-simulator taskS L Hong
Department of Kinesiology, The Pennsylvania State University, 266 Recreation Building, University Park, PA, 16802 6501, USA
Exp Brain Res 169:350-60. 2006..Acquisition of global level dynamics occurs to achieve a stable task solution that can allow for degenerate frequency- and phase-locking of the mechanical degrees of freedom at both the local intra- and inter-limb levels... - Change in the organization of degrees of freedom with learningS L Hong
Department of Kinesiology, The Pennsylvania State University, University Park, PA 16802 6501, USA
J Mot Behav 38:88-100. 2006..The present findings show that there can be independence in the patterns of change in the mechanical and dynamical degrees of freedom that arise from practice... - Inverse relations in the patterns of muscle and center of pressure dynamics during standing still and movement posturesS Morrison
School of Physiotherapy and Exercise Science, Gold Coast Campus Griffith University, PMB 50 Gold Coast Mail Centre, Gold Coast, QLD, 9726, Australia
Exp Brain Res 181:347-58. 2007..Collectively, these findings support the view that the dynamics of muscle firing patterns does not necessarily map directly to the dynamics at the movement task level and vice versa... - Grip width and the organization of force outputK Jordan
Department of Kinesiology, 266 Recreation Building, The Pennsylvania State University, University Park, PA 16802, USA
J Mot Behav 37:285-94. 2005..That pattern of findings is not necessitated by the mechanical equilibrium of grasping; thus, it also reflected adaptive neural reorganization of force output to task demands... - Postural coordination patterns as a function of dynamics of the support surfaceY G Ko
Department of Human Movement Science, Seoul Women's University, 126, Kongnung 2-dong, Nowon-Ku, Seoul 139-774, South Korea
Hum Mov Sci 20:737-64. 2001..It appears that upright standing posture has a small set of coordination patterns that are particular to the dynamics of the surface of support... - Learning the pedalo locomotion taskH-H Chen
National Taitung University, Taiwan
J Mot Behav 37:247-56. 2005..Those findings on the learning functions for movement and outcome scores are discussed in relation to the redundancy of the biomechanical system in moving to a dynamical stable fixed point in this task...