Sensory discrimination capabilities in patients with focal hand dystonia

To explore the concept that dystonia may result from dysfunction of the sensory system, 14 patients with focal hand dystonia were tested during two somatosensory discrimination tasks. Compared with controls, patients had a higher threshold in a task involving discrimination of two electric stimuli c...

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Bibliographic Details
Published in:Annals of neurology 2000-03, Vol.47 (3), p.377-380
Main Authors: Bara-Jimenez, William, Shelton, Patricia, Sanger, Terence D., Hallett, Mark
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Discrimination (Psychology) - physiology
Diseases of striated muscles. Neuromuscular diseases
Dystonic Disorders - physiopathology
Electric Stimulation
Hand - physiopathology
Humans
Medical sciences
Middle Aged
Neurology
Sensory Thresholds - physiology
Space Perception - physiology
Task Performance and Analysis
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Summary:To explore the concept that dystonia may result from dysfunction of the sensory system, 14 patients with focal hand dystonia were tested during two somatosensory discrimination tasks. Compared with controls, patients had a higher threshold in a task involving discrimination of two electric stimuli closely related temporally, an abnormality that correlated with the degree of severity of dystonia. There was no significant difference in a single‐touch, gross localization task. The possible relevance of these findings to the pathogenesis of dystonia is discussed. Ann Neurol 2000;47:377–380
ISSN:0364-5134
1531-8249
DOI:10.1002/1531-8249(200003)47:3<377::AID-ANA16>3.0.CO;2-2