Abstract
We have studied multi-joint arm movements in a patient with right cerebellar damage. Our patient's kinetic tremor was reduced in the absence of visual feedback, but increased when performing a concurrent cognitive task. We suggest that her kinetic tremor reflects use of a slow cortical feedback circuit for error-corrections during movement. Analysing the spatial relation between hand aperture and hand transport in prehensile movements, we found preserved strategic, trial-to-trial coordination, but impaired reactive, within-trial coordination. We conclude that the proprioceptive representations provided by the normal cerebellum play an important role in coordinating multi-joint movement.
Publication types
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Case Reports
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Attention / physiology
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Brain Damage, Chronic / physiopathology*
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Brain Damage, Chronic / psychology
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Cerebellar Neoplasms / physiopathology*
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Cerebellar Neoplasms / psychology
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Cerebellar Neoplasms / surgery
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Cerebral Cortex / physiopathology
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Dominance, Cerebral / physiology*
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Ependymoma / physiopathology*
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Ependymoma / psychology
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Ependymoma / surgery
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Feedback / physiology
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Female
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Functional Laterality / physiology
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Humans
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Kinesthesis / physiology
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Motor Skills / physiology
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Nerve Net / physiopathology
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Neurologic Examination
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Neuropsychological Tests
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Orientation / physiology
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Postoperative Complications / physiopathology
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Postoperative Complications / psychology
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Psychomotor Disorders / physiopathology*
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Psychomotor Disorders / psychology
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Reaction Time / physiology