Search Results - "Feldman, A. G."

Interjoint coordination dynamics during reaching in stroke by CIRSTEA, M. C, MITNITSKI, A. B, FELDMAN, A. G, LEVIN, M. F

“…A technique is described that characterizes the dynamics of the interjoint coordination of arm reaching movements in healthy subjects (n=10) and in patients…”
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Stability of gait and interlimb coordination in older adults by Krasovsky, T, Baniña, M C, Hacmon, R, Feldman, A G, Lamontagne, A, Levin, M F

“…Most falls in older adults occur when walking, specifically following a trip. This study investigated the short- and longer term responses of young (n = 24,…”
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Recruitment and sequencing of different degrees of freedom during pointing movements involving the trunk in healthy and hemiparetic subjects by ARCHAMBAULT, P, PIGEON, P, FELDMAN, A. G, LEVIN, M. F

“…Previous studies have shown that in neurologically normal subjects the addition of trunk motion during a reaching task does not affect the trajectory of the…”
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Vestibular System May Provide Equivalent Motor Actions Regardless of the Number of Body Segments Involved in the Task by Raptis, H. A, Dannenbaum, E, Paquet, N, Feldman, A. G

“…1 Neurological Science Research Center, Department of Physiology, University of Montreal and Center for Multidisciplinary Research in Rehabilitation (CRIR),…”
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The timing of control signals underlying fast point-to-point arm movements by GHAFOURI, M, FELDMAN, A. G

“…It is known that proprioceptive feedback induces muscle activation when the facilitation of appropriate motoneurons exceeds their threshold. In the…”
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Arm-trunk coordination in the absence of proprioception by TUNIK, E, POIZNER, H, LEVIN, M. F, ADAMOVICH, S. V, MESSIER, J, LAMARRE, Y, FELDMAN, A. G

“…During trunk-assisted reaching to targets placed within arm's length, the influence of trunk motion on the hand trajectory is compensated for by changes in the…”
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Participation of ipsilateral cortical descending influences in bimanual wrist movements in humans by Zhang, L., Duval, L., Hasanbarani, F., Zhu, Y., Zhang, X., Barthelemy, D., Dancause, N., Feldman, A. G.

“…There are contralateral and less studied ipsilateral (i), indirect cortical descending projections to motoneurons (MNs). We compared ipsilateral cortical…”
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Two functionally different synergies during arm reaching movements involving the trunk by Ma, S, Feldman, A G

“…1. To address the problem of the coordination of a redundant number of degrees of freedom in motor control, we analyzed the influence of voluntary trunk…”
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Control of double-joint arm posture in adults with unilateral brain damage by MIHALTCHEV, P, ARCHAMBAULT, P. S, FELDMAN, A. G, LEVIN, M. F

“…It has been suggested that multijoint movements result from the specification of a referent configuration of the body. The activity of muscles and forces…”
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The use of enhanced intrinsic feedback for motor learning in stroke survivors: Clinical trial protocol by Rajda, C.M., Feldman, A.G., Boudrias, M.H., Archambault, P.S., Berman, S., Wein, T., Levin, M.F.

“…Stroke can lead to lasting sensorimotor deficits of the upper limb (UL) persisting into the chronic phase despite intensive rehabilitation. A major impairment…”
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Deficits in adaptive upper limb control in response to trunk perturbations in Parkinson's disease by TUNIK, E, POIZNER, H, ADAMOVICH, S. V, LEVIN, M. F, FELDMAN, A. G

“…The ability of patients with Parkinson's disease (PD) to compensate for unexpected perturbations remains relatively unexplored. To address this issue PD…”
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The role of stretch reflex threshold regulation in normal and impaired motor control by Levin, M F, Feldman, A G

“…Some hypotheses suggest that stretch reflex threshold regulation may be an essential element of motor control. Disturbances in this mechanism may lead to motor…”
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Interjoint coordination in lower limbs in patients with a rupture of the anterior cruciate ligament of the knee joint by St-Onge, N, Duval, N, Yahia, L'H, Feldman, A G

“…Previous studies of movement kinematics in patients with a ruptured anterior cruciate ligament (ACL) have focused on changes in angular displacement in a…”
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Superposition of independent units of coordination during pointing movements involving the trunk with and without visual feedback by PIGEON, P, YAHIA, L, MITNITSKI, A. B, FELDMAN, A. G

“…Previous studies addressing the problem of the control of multiple degrees of freedom have examined the influence of trunk movement on pointing movements…”
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One-trial adaptation of movement to changes in load by Weeks, D L, Aubert, M P, Feldman, A G, Levin, M F

“…1. We analyzed the rapid adaptation of elbow movement to unexpected changes in external load conditions at the elbow joint. The experimental approach was based…”
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Control processes underlying elbow flexion movements may be independent of kinematic and electromyographic patterns: experimental study and modelling by St-Onge, N, Adamovich, S.V, Feldman, A.G

“…Using a non-linear dynamic model based on the λ version of the equilibrium-point hypothesis, we investigated the shape and duration of the control patterns…”
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A critical evaluation of the force control hypothesis in motor control by OSTRY, David J, FELDMAN, Anatol G

“…The ability to formulate explicit mathematical models of motor systems has played a central role in recent progress in motor control research. As a result of…”
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Compensatory arm–trunk coordination in pointing movements is preserved in the absence of visual feedback by Pigeon, Pascale, Feldman, Anatol G

“…This study examined the influence of trunk recruitment on the kinematic characteristics of pointing movements. The distribution of final positions of the hand,…”
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Dopamine replacement therapy does not restore the ability of Parkinsonian patients to make rapid adjustments in motor strategies according to changing sensorimotor contexts by Tunik, E, Feldman, A.G, Poizner, H

“…Abstract The ability of dopamine replacement to restore rapid motor adjustments in Parkinson's disease (PD) was investigated. Medicated and non-medicated…”
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Multi-muscle control of head movements in monkeys: the referent configuration hypothesis by Lestienne, Francis G., Thullier, Francine, Archambault, Philippe, Levin, Mindy F., Feldman, Anatol G.

“…It is suggested that the nervous system may specify a referent configuration (R) of the body determined by the set of the threshold joint angles at which all…”
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