Focal pathological startle following pontine infarction
Identifieur interne : 006793 ( Main/Merge ); précédent : 006792; suivant : 006794Focal pathological startle following pontine infarction
Auteurs : Shaun R. D. Watson [Australie] ; James G. Colebatch [Australie]Source :
- Movement disorders [ 0885-3185 ] ; 2002.
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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.
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Pascal:02-0207137Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Focal pathological startle following pontine infarction</title><author><name sortKey="Watson, Shaun R D" sort="Watson, Shaun R D" uniqKey="Watson S" first="Shaun R. D." last="Watson">Shaun R. D. Watson</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital</s1><s2>Randwick, Sydney 2031</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement></placeName></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"><inist:fA14 i1="01"><s1>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital</s1><s2>Randwick, Sydney 2031</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">02-0207137</idno><date when="2002">2002</date><idno type="stanalyst">PASCAL 02-0207137 INIST</idno><idno type="RBID">Pascal:02-0207137</idno><idno type="wicri:Area/PascalFrancis/Corpus">002817</idno><idno type="wicri:Area/PascalFrancis/Curation">000504</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">002754</idno><idno type="wicri:doubleKey">0885-3185:2002:Watson S:focal:pathological:startle</idno><idno type="wicri:Area/Main/Merge">006793</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Focal pathological startle following pontine infarction</title><author><name sortKey="Watson, Shaun R D" sort="Watson, Shaun R D" uniqKey="Watson S" first="Shaun R. D." last="Watson">Shaun R. D. Watson</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital</s1><s2>Randwick, Sydney 2031</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement></placeName></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"><inist:fA14 i1="01"><s1>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital</s1><s2>Randwick, Sydney 2031</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno><imprint><date when="2002">2002</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acoustic stimulus</term><term>Adult</term><term>Arm</term><term>Bending</term><term>Brain stem infarction</term><term>Case study</term><term>Complication</term><term>Electromyography</term><term>Involuntary movement</term><term>Localized</term><term>Male</term><term>Pathogenesis</term><term>Pons varolii</term><term>Startle reflex</term><term>Upper limb</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Ramollissement tronc cérébral</term><term>Protubérance annulaire</term><term>Electromyographie</term><term>Membre supérieur</term><term>Bras</term><term>Mouvement involontaire</term><term>Localisé</term><term>Flexion</term><term>Réflexe sursaut</term><term>Stimulus acoustique</term><term>Etude cas</term><term>Complication</term><term>Pathogénie</term><term>Adulte</term><term>Mâle</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Adulte</term></keywords></textClass></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.</div></front></TEI><affiliations><list><country><li>Australie</li></country><settlement><li>Sydney</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Watson, Shaun R D" sort="Watson, Shaun R D" uniqKey="Watson S" first="Shaun R. D." last="Watson">Shaun R. D. Watson</name></noRegion><name sortKey="Colebatch, James G" sort="Colebatch, James G" uniqKey="Colebatch J" first="James G." last="Colebatch">James G. Colebatch</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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