Abnormal somatosensory homunculus in dystonia of the hand

Abnormalities of the sensory system have been proposed as causative factors for dystonia By mapping the human cortical hand somatosensory area of 6 patients with focal dystonia of the hand, we found an abnormality of the normal homuncular organization of the finger representations in the primary som...

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Bibliographic Details
Published in:	Annals of neurology Vol. 44; no. 5; p. 828
Main Authors:	Bara-Jimenez, W, Catalan, M J, Hallett, M, Gerloff, C
Format:	Journal Article
Language:	English
Published:	United States 01-11-1998
Subjects:	Brain - anatomy & histology Brain - physiology Brain - physiopathology Brain Mapping Dystonia - pathology Dystonia - physiopathology Fingers Functional Laterality Hand Humans Middle Aged Motor Activity Reference Values Somatosensory Cortex - physiology Somatosensory Cortex - physiopathology
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Summary:	Abnormalities of the sensory system have been proposed as causative factors for dystonia By mapping the human cortical hand somatosensory area of 6 patients with focal dystonia of the hand, we found an abnormality of the normal homuncular organization of the finger representations in the primary somatosensory cortex (S1). Although a remote antecedent event or even a developmental anomaly cannot entirely be ruled out, our findings may support the concept that abnormal plasticity is involved in the development of dystonia.
ISSN:	0364-5134
DOI:	10.1002/ana.410440520