Focal pathological startle following pontine infarction.
Identifieur interne : 000683 ( Ncbi/Curation ); précédent : 000682; suivant : 000684Focal pathological startle following pontine infarction.
Auteurs : Shaun R D. Watson [Australie] ; James G. ColebatchSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2002.
English descriptors
- KwdEn :
- Adult, Cerebral Infarction (complications), Cerebral Infarction (pathology), Evoked Potentials, Auditory, Brain Stem, Evoked Potentials, Somatosensory, Humans, Magnetic Resonance Imaging, Male, Muscle Weakness (diagnosis), Muscle Weakness (etiology), Pons (blood supply), Pons (pathology), Reflex, Startle (physiology), Videotape Recording.
- MESH :
- blood supply : Pons.
- complications : Cerebral Infarction.
- diagnosis : Muscle Weakness.
- etiology : Muscle Weakness.
- pathology : Cerebral Infarction, Pons.
- physiology : Reflex, Startle.
- Adult, Evoked Potentials, Auditory, Brain Stem, Evoked Potentials, Somatosensory, Humans, Magnetic Resonance Imaging, Male, Videotape Recording.
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.
PubMed: 11835470
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pubmed:11835470Le document en format XML
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Colebatch</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2002">2002</date><idno type="RBID">pubmed:11835470</idno><idno type="pmid">11835470</idno><idno type="wicri:Area/PubMed/Corpus">003B68</idno><idno type="wicri:Area/PubMed/Curation">003B68</idno><idno type="wicri:Area/PubMed/Checkpoint">003A85</idno><idno type="wicri:Area/Ncbi/Merge">000683</idno><idno type="wicri:Area/Ncbi/Curation">000683</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">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"><nlm:affiliation>Institute of Neurological Sciences, Department of Neurology and Clinical School, Prince of Wales Hospital, Randwick, Sydney 2031, Australia.</nlm: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><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></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="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Cerebral Infarction (complications)</term><term>Cerebral Infarction (pathology)</term><term>Evoked Potentials, Auditory, Brain Stem</term><term>Evoked Potentials, Somatosensory</term><term>Humans</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Muscle Weakness (diagnosis)</term><term>Muscle Weakness (etiology)</term><term>Pons (blood supply)</term><term>Pons (pathology)</term><term>Reflex, Startle (physiology)</term><term>Videotape Recording</term></keywords><keywords scheme="MESH" qualifier="blood supply" xml:lang="en"><term>Pons</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Cerebral Infarction</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Muscle Weakness</term></keywords><keywords scheme="MESH" qualifier="etiology" xml:lang="en"><term>Muscle Weakness</term></keywords><keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Cerebral Infarction</term><term>Pons</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Reflex, Startle</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Evoked Potentials, Auditory, Brain Stem</term><term>Evoked Potentials, Somatosensory</term><term>Humans</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Videotape Recording</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></record>Pour manipuler ce document sous Unix (Dilib)
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