Abnormalities of spatial and temporal sensory discrimination in writer's cramp.
Identifieur interne : 003D95 ( PubMed/Corpus ); précédent : 003D94; suivant : 003D96Abnormalities of spatial and temporal sensory discrimination in writer's cramp.
Auteurs : T D Sanger ; D. Tarsy ; A. Pascual-LeoneSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2001.
English descriptors
- KwdEn :
- Adult, Aged, Dystonic Disorders (complications), Dystonic Disorders (diagnosis), Dystonic Disorders (physiopathology), Humans, Middle Aged, Perceptual Disorders (complications), Perceptual Disorders (diagnosis), Perceptual Disorders (physiopathology), Severity of Illness Index, Space Perception (physiology), Time Perception (physiology).
- MESH :
- complications : Dystonic Disorders, Perceptual Disorders.
- diagnosis : Dystonic Disorders, Perceptual Disorders.
- physiology : Space Perception, Time Perception.
- physiopathology : Dystonic Disorders, Perceptual Disorders.
- Adult, Aged, Humans, Middle Aged, Severity of Illness Index.
Abstract
Clinical observations of patients with writer's cramp suggest that abnormalities of the sensory system may be a frequent finding in this disorder. Neurophysiological data from an animal model of focal dystonia have revealed cells in somatosensory cortex with enlarged and overlapping tactile receptive fields. However, psychophysical studies so far have been unable to document a clinical correlate supporting a similar enlargement of receptive fields in humans. We compared the fingertip discrimination of the orientation of fine spatial gratings between writer's cramp and control subjects and found a significant decrease in grating sensitivity in the patients, consistent with the possibility of enlarged tactile receptive fields. In addition, we duplicated previous experiments showing an abnormality of tactile temporal discrimination. The results provide psychophysical measures which may relate to the development of sensory cortical reorganization in patients with writer's cramp.
PubMed: 11215600
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Pascual-Leone</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2001">2001</date><idno type="RBID">pubmed:11215600</idno><idno type="pmid">11215600</idno><idno type="wicri:Area/PubMed/Corpus">003D95</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Abnormalities of spatial and temporal sensory discrimination in writer's cramp.</title><author><name sortKey="Sanger, T D" sort="Sanger, T D" uniqKey="Sanger T" first="T D" last="Sanger">T D Sanger</name><affiliation><nlm:affiliation>Department of Child Neurology and Movement Disorders, Stanford University Medical Center, California, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Tarsy, D" sort="Tarsy, D" uniqKey="Tarsy D" first="D" last="Tarsy">D. Tarsy</name></author><author><name sortKey="Pascual Leone, A" sort="Pascual Leone, A" uniqKey="Pascual Leone A" first="A" last="Pascual-Leone">A. Pascual-Leone</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2001" type="published">2001</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Dystonic Disorders (complications)</term><term>Dystonic Disorders (diagnosis)</term><term>Dystonic Disorders (physiopathology)</term><term>Humans</term><term>Middle Aged</term><term>Perceptual Disorders (complications)</term><term>Perceptual Disorders (diagnosis)</term><term>Perceptual Disorders (physiopathology)</term><term>Severity of Illness Index</term><term>Space Perception (physiology)</term><term>Time Perception (physiology)</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Dystonic Disorders</term><term>Perceptual Disorders</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Dystonic Disorders</term><term>Perceptual Disorders</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Space Perception</term><term>Time Perception</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Dystonic Disorders</term><term>Perceptual Disorders</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Humans</term><term>Middle Aged</term><term>Severity of Illness Index</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Clinical observations of patients with writer's cramp suggest that abnormalities of the sensory system may be a frequent finding in this disorder. Neurophysiological data from an animal model of focal dystonia have revealed cells in somatosensory cortex with enlarged and overlapping tactile receptive fields. However, psychophysical studies so far have been unable to document a clinical correlate supporting a similar enlargement of receptive fields in humans. We compared the fingertip discrimination of the orientation of fine spatial gratings between writer's cramp and control subjects and found a significant decrease in grating sensitivity in the patients, consistent with the possibility of enlarged tactile receptive fields. In addition, we duplicated previous experiments showing an abnormality of tactile temporal discrimination. The results provide psychophysical measures which may relate to the development of sensory cortical reorganization in patients with writer's cramp.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">11215600</PMID><DateCreated><Year>2001</Year><Month>02</Month><Day>15</Day></DateCreated><DateCompleted><Year>2001</Year><Month>06</Month><Day>14</Day></DateCompleted><DateRevised><Year>2007</Year><Month>11</Month><Day>14</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0885-3185</ISSN><JournalIssue CitedMedium="Print"><Volume>16</Volume><Issue>1</Issue><PubDate><Year>2001</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Movement disorders : official journal of the Movement Disorder Society</Title><ISOAbbreviation>Mov. 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