Document Detail


Effect of cupula shrinkage on the semicircular canal activity.
MedLine Citation:
PMID:  20377508     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
CONCLUSION: With half-sized cupula, the semicircular canal nerve potentials decreased under slow stimulus, thus potentially leading to reduced caloric response. This also suggests that shrunken cupula may cause dizziness because of its hypermobility.
OBJECTIVES: To examine the physiological effect of half-sized cupula on the semicircular canal nerve potential.
METHODS: The isolated cupula of the bullfrog was sectioned in half with fine scissors and was replaced on the crista. Mechanical endolymphatic flow and slow and fast stimuli were delivered and the evoked action potentials were recorded.
RESULTS: The cupula was successfully sectioned in half and was replaced on the crista. With the half-sized cupula, the action potentials became smaller under slow stimulus than under fast stimulus.
Authors:
Youichi Iimura; Mamoru Suzuki; Koji Otsuka; Taro Inagaki; Ujimoto Konomi; Shigetaka Shimizu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta oto-laryngologica     Volume:  130     ISSN:  1651-2251     ISO Abbreviation:  Acta Otolaryngol.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370354     Medline TA:  Acta Otolaryngol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1092-6     Citation Subset:  IM    
Affiliation:
Department of Otolaryngology, Tokyo Medical University, Japan.
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