Movement Disorders (revue)

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Trigeminally induced startle in children with hyperekplexia

Identifieur interne : 001920 ( Istex/Corpus ); précédent : 001919; suivant : 001921

Trigeminally induced startle in children with hyperekplexia

Auteurs : Katsuhiko Oguro ; Keiko Hirano ; Hideo Aiba

Source :

RBID : ISTEX:1CA608DCF2594CDC63C3C0DECCEF7897897986C4

English descriptors

Abstract

To determine the physiological features of startle reactions in children with hereditary hyperekplexia, motor responses to auditory and trigeminal stimulation were investigated in 2 patients and 3 control subjects by means of multiple surface electromyographic recordings. The pattern of motor activation in auditory startle was similar in the two groups, although the responses in the patients were increased in terms of the extent of the responses. In the patients, nose taps elicited two separate responses in various muscles. The initial, short‐latency response was often elicited in all the muscles examined. This reflex was similar to the R1 component of the electrical blink reflex. In addition, the early reflex was immediately followed by the second response, which also appeared widely and was similar to R2 of the blink reflex. Taps on the supraorbital nerve elicited multiple startle patterns consisting of these two responses, although generalization was infrequent. In the control subjects, these responses were elicited in a few muscles. In the hyperekplectic children, both the early and second responses to trigeminal stimulation were increased, in addition to the audiogenic reflex. It was suggested that enhancement of these responses occurred due to hyperexcitability in the brainstem reticular formation in our patients. © 2004 Movement Disorder Society

Url:
DOI: 10.1002/mds.20333

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ISTEX:1CA608DCF2594CDC63C3C0DECCEF7897897986C4

Le document en format XML

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<abstract lang="en">To determine the physiological features of startle reactions in children with hereditary hyperekplexia, motor responses to auditory and trigeminal stimulation were investigated in 2 patients and 3 control subjects by means of multiple surface electromyographic recordings. The pattern of motor activation in auditory startle was similar in the two groups, although the responses in the patients were increased in terms of the extent of the responses. In the patients, nose taps elicited two separate responses in various muscles. The initial, short‐latency response was often elicited in all the muscles examined. This reflex was similar to the R1 component of the electrical blink reflex. In addition, the early reflex was immediately followed by the second response, which also appeared widely and was similar to R2 of the blink reflex. Taps on the supraorbital nerve elicited multiple startle patterns consisting of these two responses, although generalization was infrequent. In the control subjects, these responses were elicited in a few muscles. In the hyperekplectic children, both the early and second responses to trigeminal stimulation were increased, in addition to the audiogenic reflex. It was suggested that enhancement of these responses occurred due to hyperexcitability in the brainstem reticular formation in our patients. © 2004 Movement Disorder Society</abstract>
<subject lang="en">
<genre>Keywords</genre>
<topic>startle</topic>
<topic>hyperekplexia</topic>
<topic>trigeminal</topic>
<topic>blink reflex</topic>
<topic>children</topic>
</subject>
<relatedItem type="host">
<titleInfo>
<title>Movement Disorders</title>
</titleInfo>
<titleInfo type="abbreviated">
<title>Mov. Disord.</title>
</titleInfo>
<subject>
<genre>article category</genre>
<topic>Brief Report</topic>
</subject>
<identifier type="ISSN">0885-3185</identifier>
<identifier type="eISSN">1531-8257</identifier>
<identifier type="DOI">10.1002/(ISSN)1531-8257</identifier>
<identifier type="PublisherID">MDS</identifier>
<part>
<date>2005</date>
<detail type="volume">
<caption>vol.</caption>
<number>20</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>4</number>
</detail>
<extent unit="pages">
<start>484</start>
<end>489</end>
<total>6</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">1CA608DCF2594CDC63C3C0DECCEF7897897986C4</identifier>
<identifier type="DOI">10.1002/mds.20333</identifier>
<identifier type="ArticleID">MDS20333</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright © 2004 Movement Disorder Society</accessCondition>
<recordInfo>
<recordOrigin>Wiley Subscription Services, Inc., A Wiley Company</recordOrigin>
<recordContentSource>WILEY</recordContentSource>
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