Document Detail


Optokinetic response in patients with vestibular areflexia.
MedLine Citation:
PMID:  21846954     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Optokinetic nystagmus (OKN) responses (stimuli 40°/s and 60°/s) were evaluated in 121 patients with vestibular areflexia (VA) and were compared with a control group of 99 control subjects matched by age. The mean response levels were significantly higher in the VA group than in the control group: 1.7°/s at 40°/s stimulation, and 4.4°/s at 60°/s. The VA group showed a significantly wider scattering and greater variances and, as a group, they exhibited higher OKN gains than the control subjects. We suggest that the higher gain of OKN responses in VA patients can be attributed to an increased efficiency in signal processing by the cortical optokinetic system. This enhancement may be similar to the enhancement which, in healthy subjects, is produced by "optokinetic training".
Authors:
Patrick L M Huygen; Wim I M Verhagen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of vestibular research : equilibrium & orientation     Volume:  21     ISSN:  1878-6464     ISO Abbreviation:  J Vestib Res     Publication Date:  2011  
Date Detail:
Created Date:  2011-08-17     Completed Date:  2011-12-13     Revised Date:  2012-03-28    
Medline Journal Info:
Nlm Unique ID:  9104163     Medline TA:  J Vestib Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  219-25     Citation Subset:  IM; S    
Affiliation:
Department of Otorhinolaryngology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Aged, 80 and over
Child
Humans
Male
Middle Aged
Nystagmus, Optokinetic*
Nystagmus, Physiologic
Photic Stimulation
Reflex, Vestibulo-Ocular*
Vestibular Diseases / physiopathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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