| The effect of lateral head tilt on horizontal postrotatory nystagmus I and II and the Purkinje effect. | |
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MedLine Citation:
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PMID: 4024896 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The influence of an active lateral head tilt on postrotatory nystagmus I and II (PI, PII) was explored in normal humans. During postrotatory nystagmus the head was tilted laterally either towards the direction of the previous rotation (ipsilateral tilt) or towards the opposite direction (contralateral tilt) or the head was kept erect. Both ipsi- and contralateral head tilts led to a substantially weaker and shorter PI and PII as compared with the trial without head tilt. The time constants of the decline of PI were shortened to the ones observed in the peripheral nerve of animals. The reduction of PI and PII suggests a position-dependent tonic inhibition of the vestibular storage mechanism in the vestibular nuclei probably by the otoliths. The stronger reduction of time constant and cumulative amplitude of PI after contralateral as compared with ipsilateral head tilt may be explained by different combinations of asymmetric responses in canal and otolith afferents. |
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Authors:
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V Schrader; E Koenig; J Dichgans |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Acta oto-laryngologica Volume: 100 ISSN: 0001-6489 ISO Abbreviation: Acta Otolaryngol. Publication Date: 1985 Jul-Aug |
Date Detail:
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Created Date: 1985-09-25 Completed Date: 1985-09-25 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0370354 Medline TA: Acta Otolaryngol Country: SWEDEN |
Other Details:
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Languages: eng Pagination: 98-105 Citation Subset: IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Eye Movements Head Humans Nystagmus, Physiologic* Otolithic Membrane / innervation* Posture* Saccule and Utricle / innervation* Sensation / physiology Time Factors Vestibular Nuclei / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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