Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects.

Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects. Research Abstract Details 

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Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects. Abstract Text:

Edelle C Field-Fote,Volker Dietz,

OBJECTIVE: Responses to afferent input during locomotion are organized at the spinal level but modulated by supraspinal centers. The study aim was to examine whether supraspinal influences affect the behavior of complex electromyographic (EMG) responses to single limb perturbations during walking. METHODS: Subjects with motor-complete (MCSCI), motor-incomplete spinal cord injury (MISCI), and non-disabled (ND) subjects participated. Hip or knee joint trajectory was briefly arrested by a robotic device at early or late swing phase. EMG responses from muscles of both legs were analyzed. RESULTS: Perturbation-induced EMG responses of spinal cord injured and ND individuals were similar in basic structure, with the exception that tibialis anterior onset times were delayed for SCI subjects. Across all groups, perturbations in late swing (i.e., near the swing-to-stance transition) were associated with shorter muscle onset times and higher EMG amplitudes. Knee perturbations were associated with shorter muscle response onset times, while hip perturbations elicited higher response amplitudes. EMG responses were also evoked in muscles contralateral to the perturbation. CONCLUSIONS: These data indicate that neuronal circuits within the spinal cord deprived of normal supraspinal input respond to swing phase perturbations in a manner that is similar to that of the intact spinal cord. SIGNIFICANCE: The adult human spinal cord is capable of generating complex, phase-appropriate responses much as has been observed in studies of human infants and in spinal animals.

Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects. Publishing Authors By Initials

EC Field-Fote,V Dietz,

For similar therapeutics: exercise movement techniques: walking research abstracts see: therapeutics: exercise movement techniques: walking research

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Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Clinical neurophysiology : official journal of the

VOLUME: 118

Page Numbers: 1607-16

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ISSN: 1388-2457

DAY: 1

MONTH: 05

YEAR: 2007

Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects. Information

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LANGUAGE: eng

NlmUniqueID: 100883319

Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects. Keywords Mesh Terms:

KEYWORDS: Walking

MESH TERMS: physiology

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Grant and Affiliation Information for Single joint perturbation during gait: preserved compensatory response pattern in spinal cord injured subjects.

AFFILIATION: The Miami Project to Cure Paralysis, Miller School of Medicine, University of Miami, Miami, FL 33136, USA. edee@miami.edu

Country: Netherlands

AGENCY: United States NINDS

GRANT: N01 NS32351

ACRONYM: NS

MEDLINETA: Clin Neurophysiol

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