Gleich, Otto and Dooling, R. J. and Ryals, B. M. (2001) A quantitative analysis of the nerve fibers in the VIIIth nerve of Belgian Waterslager canaries with a hereditary sensorineural hearing loss. HEARING RESEARCH, 151 (1-2). pp. 141-148. ISSN 0378-5955
Full text not available from this repository. (Request a copy)Abstract
The number of auditory nerve fibers was determined for non-Belgian Waterslager canaries (non-BWS) and Belgian Waterslager canaries (BWS) that are affected by a sensorineural high frequency hearing loss and a 30% reduction in the number of auditory hair cells. Counts were obtained from semithin cross sections of the Durcupan-embedded auditory nerve at the level of the internal auditory meatus. In addition, the number of lagenar fibers was determined from cross sections near the apical end of the cochlear duct in order to separate them from the total number of auditory nerve fibers. The mean number of auditory nerve fibers was 6076 in non-BWS and 5363 in BWS canaries, representing a 12% reduction in BWS. This small reduction in the number of auditory nerve fibers? as compared to the larger reduction in hair cell number, might be explained by a predominant loss of abneural hair cells in BWS, since it has been shown for other species that a large proportion of abneural hair cells are devoid of afferent innervation. In addition, we observed that despite the prominent hair cell pathologies documented for BWS canaries, the mean diameter of auditory nerve fibers from non-BWS canaries (2.22 +/- 0.81 mum) did not differ from those of BWS canaries (2.21 +/- 0.96 mum). (C) 2001 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BASILAR PAPILLA; SERINUS-CANARIUS; GUINEA-PIG; AUDITORY-THRESHOLDS; BARN OWL; INNERVATION; COCHLEAR; CHICKEN; DEGENERATION; MORPHOLOGY; bird; cochlea; basilar papilla; hair cell; pathology; axon diameter |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Feb 2022 10:37 |
| Last Modified: | 28 Feb 2022 10:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/41861 |
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