Auditory startle reaction in primary blepharospasm.
Identifieur interne : 002940 ( PubMed/Curation ); précédent : 002939; suivant : 002941Auditory startle reaction in primary blepharospasm.
Auteurs : Jörg Müller [Autriche] ; Martina Rinnerthaler ; Werner Poewe ; Markus KoflerSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2007.
English descriptors
- KwdEn :
- Acoustic Stimulation, Blepharospasm (drug therapy), Blepharospasm (etiology), Blepharospasm (physiopathology), Blinking, Botulinum Toxins, Type A (therapeutic use), Brain Stem (physiopathology), Electromyography, Female, Humans, Male, Middle Aged, Muscle, Skeletal (physiopathology), Neuromuscular Agents (therapeutic use), Reflex, Startle (physiology), Torticollis (complications), Torticollis (physiopathology).
- MESH :
- chemical , therapeutic use : Botulinum Toxins, Type A, Neuromuscular Agents.
- complications : Torticollis.
- drug therapy : Blepharospasm.
- etiology : Blepharospasm.
- physiology : Reflex, Startle.
- physiopathology : Blepharospasm, Brain Stem, Muscle, Skeletal, Torticollis.
- Acoustic Stimulation, Blinking, Electromyography, Female, Humans, Male, Middle Aged.
Abstract
Primary dystonia is associated with abnormal brainstem function, as shown by abnormalities of the blink reflex in blepharospasm (BSP) and of the auditory startle reaction in cervical dystonia. We examined the auditory startle reaction--a brainstem reflex elicited by an unexpected loud stimulus--in patients with primary BSP to expand knowledge on brainstem pathophysiology in primary focal dystonia. Thirteen patients with primary BSP were included and 13 age- and sex-matched healthy volunteers served as controls. Auditory startle responses (ASRs) were elicited by binaural high-intensity auditory stimuli, and reflex electromyographic activity was recorded simultaneously with surface electrodes bilaterally from masseter, orbicularis oculi, sternocleidomastoid, and biceps brachii muscles. Patients with BSP showed higher ASR probabilities (masseter, sternocleidomastoid, biceps brachii), shorter ASR onset latencies (masseter, orbicularis oculi, sternocleidomastoid), and larger ASR area-under-the-curve (masseter, sternocleidomastoid) as compared with normal controls. Habituation of ASRs did not differ significantly between patients and controls. These results corroborate previous findings of increased brainstem excitability in primary BSP but point to a different pattern of brainstem dysfunction compared to cervical dystonia, indicating that different pathophysiological mechanisms are involved in the two types of focal dystonia.
DOI: 10.1002/mds.21270
PubMed: 17149731
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We examined the auditory startle reaction--a brainstem reflex elicited by an unexpected loud stimulus--in patients with primary BSP to expand knowledge on brainstem pathophysiology in primary focal dystonia. Thirteen patients with primary BSP were included and 13 age- and sex-matched healthy volunteers served as controls. Auditory startle responses (ASRs) were elicited by binaural high-intensity auditory stimuli, and reflex electromyographic activity was recorded simultaneously with surface electrodes bilaterally from masseter, orbicularis oculi, sternocleidomastoid, and biceps brachii muscles. Patients with BSP showed higher ASR probabilities (masseter, sternocleidomastoid, biceps brachii), shorter ASR onset latencies (masseter, orbicularis oculi, sternocleidomastoid), and larger ASR area-under-the-curve (masseter, sternocleidomastoid) as compared with normal controls. Habituation of ASRs did not differ significantly between patients and controls. These results corroborate previous findings of increased brainstem excitability in primary BSP but point to a different pattern of brainstem dysfunction compared to cervical dystonia, indicating that different pathophysiological mechanisms are involved in the two types of focal dystonia.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">17149731</PMID><DateCreated><Year>2007</Year><Month>02</Month><Day>05</Day></DateCreated><DateCompleted><Year>2007</Year><Month>03</Month><Day>23</Day></DateCompleted><DateRevised><Year>2014</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0885-3185</ISSN><JournalIssue CitedMedium="Print"><Volume>22</Volume><Issue>2</Issue><PubDate><Year>2007</Year><Month>Jan</Month><Day>15</Day></PubDate></JournalIssue><Title>Movement disorders : official journal of the Movement Disorder Society</Title><ISOAbbreviation>Mov. Disord.</ISOAbbreviation></Journal><ArticleTitle>Auditory startle reaction in primary blepharospasm.</ArticleTitle><Pagination><MedlinePgn>268-72</MedlinePgn></Pagination><Abstract><AbstractText>Primary dystonia is associated with abnormal brainstem function, as shown by abnormalities of the blink reflex in blepharospasm (BSP) and of the auditory startle reaction in cervical dystonia. We examined the auditory startle reaction--a brainstem reflex elicited by an unexpected loud stimulus--in patients with primary BSP to expand knowledge on brainstem pathophysiology in primary focal dystonia. Thirteen patients with primary BSP were included and 13 age- and sex-matched healthy volunteers served as controls. Auditory startle responses (ASRs) were elicited by binaural high-intensity auditory stimuli, and reflex electromyographic activity was recorded simultaneously with surface electrodes bilaterally from masseter, orbicularis oculi, sternocleidomastoid, and biceps brachii muscles. Patients with BSP showed higher ASR probabilities (masseter, sternocleidomastoid, biceps brachii), shorter ASR onset latencies (masseter, orbicularis oculi, sternocleidomastoid), and larger ASR area-under-the-curve (masseter, sternocleidomastoid) as compared with normal controls. Habituation of ASRs did not differ significantly between patients and controls. These results corroborate previous findings of increased brainstem excitability in primary BSP but point to a different pattern of brainstem dysfunction compared to cervical dystonia, indicating that different pathophysiological mechanisms are involved in the two types of focal dystonia.</AbstractText><CopyrightInformation>(c) 2006 Movement Disorder Society.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Müller</LastName><ForeName>Jörg</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Neurology, Medical University Innsbruck, Austria.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rinnerthaler</LastName><ForeName>Martina</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Poewe</LastName><ForeName>Werner</ForeName><Initials>W</Initials></Author><Author ValidYN="Y"><LastName>Kofler</LastName><ForeName>Markus</ForeName><Initials>M</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Mov Disord</MedlineTA><NlmUniqueID>8610688</NlmUniqueID><ISSNLinking>0885-3185</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D009465">Neuromuscular Agents</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 3.4.24.69</RegistryNumber><NameOfSubstance UI="D019274">Botulinum Toxins, Type A</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000161">Acoustic Stimulation</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001764">Blepharospasm</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000188">drug therapy</QualifierName><QualifierName MajorTopicYN="N" UI="Q000209">etiology</QualifierName><QualifierName MajorTopicYN="Y" UI="Q000503">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001767">Blinking</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D019274">Botulinum Toxins, Type A</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000627">therapeutic use</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001933">Brain Stem</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000503">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004576">Electromyography</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005260">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008875">Middle Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D018482">Muscle, Skeletal</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000503">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009465">Neuromuscular Agents</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000627">therapeutic use</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013216">Reflex, Startle</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014103">Torticollis</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000150">complications</QualifierName><QualifierName MajorTopicYN="N" UI="Q000503">physiopathology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2006</Year><Month>12</Month><Day>7</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>3</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2006</Year><Month>12</Month><Day>7</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1002/mds.21270</ArticleId><ArticleId IdType="pubmed">17149731</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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