Focal pathological startle following pontine infarction
Identifieur interne : 001125 ( Istex/Curation ); précédent : 001124; suivant : 001126Focal pathological startle following pontine infarction
Auteurs : Shaun R. D. Watson [Australie] ; James G. Colebatch [Australie]Source :
- Movement Disorders [ 0885-3185 ] ; 2002-01.
Abstract
A 36‐year‐old male developed an acute right‐sided weakness due to left‐sided pontine infarction. Two months later, he first noticed sudden right elbow flexion in response to a loud unexpected noise. Detailed electrophysiological assessment was performed. A large, short‐latency (median 39 msec), synchronous electromyographic discharge occurred in the right biceps brachii electrodes following a 50‐msec, 120‐dB 1‐kHz tone burst, with habituation only with very short (30‐second) interstimulus intervals. Less synchronous activity at longer latencies was present both in a number of right‐sided arm muscles at rest and on the clinically unaffected side during a tonic voluntary contraction. We discuss possible underlying mechanisms and our reasons for considering this a focally enhanced startle response. Our report broadens the range of expression of acquired startle disorders. © 2001 Movement Disorder Society.
Url:
DOI: 10.1002/mds.10022
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D." last="Watson">Shaun R. D. Watson</name><affiliation wicri:level="1"><mods:affiliation>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital, Randwick, Sydney 2031, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital, Randwick, Sydney 2031</wicri:regionArea></affiliation></author><author><name sortKey="Colebatch, James G" sort="Colebatch, James G" uniqKey="Colebatch J" first="James G." last="Colebatch">James G. Colebatch</name><affiliation wicri:level="1"><mods:affiliation>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital, Randwick, Sydney 2031, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital, Randwick, Sydney 2031</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>John Wiley & Sons, Inc.</publisher><pubPlace>New York</pubPlace><date type="published" when="2002-01">2002-01</date><biblScope unit="vol">17</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="212">212</biblScope><biblScope unit="page" to="218">218</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">E75FF2EC165E691F57D674C5C7C884965C8D9BFE</idno><idno type="DOI">10.1002/mds.10022</idno><idno type="ArticleID">MDS10022</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A 36‐year‐old male developed an acute right‐sided weakness due to left‐sided pontine infarction. Two months later, he first noticed sudden right elbow flexion in response to a loud unexpected noise. Detailed electrophysiological assessment was performed. A large, short‐latency (median 39 msec), synchronous electromyographic discharge occurred in the right biceps brachii electrodes following a 50‐msec, 120‐dB 1‐kHz tone burst, with habituation only with very short (30‐second) interstimulus intervals. Less synchronous activity at longer latencies was present both in a number of right‐sided arm muscles at rest and on the clinically unaffected side during a tonic voluntary contraction. We discuss possible underlying mechanisms and our reasons for considering this a focally enhanced startle response. Our report broadens the range of expression of acquired startle disorders. © 2001 Movement Disorder Society.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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