Document Detail

Temperature effects on auditory nerve fiber response in the American bullfrog.
MedLine Citation:
PMID:  2329096     Owner:  NLM     Status:  MEDLINE    
Single fiber recordings were made from auditory nerve fibers of the American bullfrog (Rana catesbeiana). As temperature was raised: (1) Best frequencies of fibers from the amphibian papilla (N = 15) increased. Below 600 Hz best frequency changes up to 0.06 oct/degrees C were found; above 600 Hz changes were less than 0.03 oct/degrees C. In the basilar papilla (N = 4) no significant increase of best frequency was found. (2) Spike rates in response to fixed-RMS-amplitude stimuli increased considerably: Q10 of spike rate ranged from 5 to 10. (3) Spontaneous activity, found in basilar papilla fibers, increased with average Q10 = 1.6 (+/- 0.3). (4) A conspicuous change of tuning quality factor Q10 dB was only observed in two fibers, that were taken to low temperatures (less than 16 degrees C). (5) the nearly linear frequency vs. phase relation in amphibian papilla shifts to higher frequency (along with shift of best frequency), while its average slope remains nearly unchanged.
P van Dijk; E R Lewis; H P Wit
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Hearing research     Volume:  44     ISSN:  0378-5955     ISO Abbreviation:  Hear. Res.     Publication Date:  1990 Mar 
Date Detail:
Created Date:  1990-05-29     Completed Date:  1990-05-29     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7900445     Medline TA:  Hear Res     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  231-40     Citation Subset:  IM    
Institute of Audiology, University Hospital, Groningen, The Netherlands.
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MeSH Terms
Action Potentials
Rana catesbeiana / physiology*
Vestibulocochlear Nerve / physiology*
Grant Support

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

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