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Motor cortex excitability after thalamic infarction

Transcranial magnetic stimulation was used to map hand muscle representations in the motor cortex of a patient in whom infarction of the sensory thalamus deprived the sensorimotor cortex of sensory input. The threshold for activation of the motor cortex on the affected side was higher and the cortic...

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Published in:	Journal of clinical neuroscience 2005-05, Vol.12 (4), p.469-472
Main Authors:	Miles, T.S., Ridding, M.C., McKay, D., Thompson, P.D.
Format:	Article
Language:	English
Subjects:	Adult Brain Infarction - pathology Brain Infarction - physiopathology Electromyography - methods Evoked Potentials, Motor - physiology Evoked Potentials, Motor - radiation effects Female Functional Laterality Humans Magnetic Resonance Imaging - methods Motor Cortex - physiopathology Muscle, Skeletal - physiopathology plasticity sensorimotor cortex thalamic stroke Thalamus - pathology Transcranial Magnetic Stimulation - methods
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container_title	Journal of clinical neuroscience
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creator	Miles, T.S. Ridding, M.C. McKay, D. Thompson, P.D.
description	Transcranial magnetic stimulation was used to map hand muscle representations in the motor cortex of a patient in whom infarction of the sensory thalamus deprived the sensorimotor cortex of sensory input. The threshold for activation of the motor cortex on the affected side was higher and the cortical representational maps of individual muscles were less well defined than those on the normal side. It is concluded that electrophysiological changes in cortical organisation can be demonstrated following withdrawal of, or imbalance in sensory afferent activity to the cerebral cortex in humans.
doi_str_mv	10.1016/j.jocn.2005.01.002
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source	ScienceDirect Freedom Collection 2022-2024
subjects	Adult Brain Infarction - pathology Brain Infarction - physiopathology Electromyography - methods Evoked Potentials, Motor - physiology Evoked Potentials, Motor - radiation effects Female Functional Laterality Humans Magnetic Resonance Imaging - methods Motor Cortex - physiopathology Muscle, Skeletal - physiopathology plasticity sensorimotor cortex thalamic stroke Thalamus - pathology Transcranial Magnetic Stimulation - methods
title	Motor cortex excitability after thalamic infarction
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