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Titolo:
A quantitative analysis of the nerve fibers in the VIIIth nerve of BelgianWaterslager canaries with a hereditary sensorineural hearing loss
Autore:
Gleich, O; Dooling, RJ; Ryals, BM;
Indirizzi:
Univ Regensburg, ENT Dept, D-93042 Regensburg, Germany Univ Regensburg Regensburg Germany D-93042 , D-93042 Regensburg, Germany Univ Maryland, Dept Psychol, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 t Psychol, College Pk, MD 20742 USA James Madison Univ, Dept Commun Sci & Disorders, Harrisonburg, VA 22807 USA James Madison Univ Harrisonburg VA USA 22807 , Harrisonburg, VA 22807 USA
Titolo Testata:
HEARING RESEARCH
fascicolo: 1-2, volume: 151, anno: 2001,
pagine: 141 - 148
SICI:
0378-5955(200101)151:1-2<141:AQAOTN>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
BASILAR PAPILLA; SERINUS-CANARIUS; GUINEA-PIG; AUDITORY-THRESHOLDS; BARN OWL; INNERVATION; COCHLEAR; CHICKEN; DEGENERATION; MORPHOLOGY;
Keywords:
bird; cochlea; basilar papilla; hair cell; pathology; axon diameter;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Gleich, O Univ Regensburg, ENT Dept, Franz Josef Strauss Allee 11, D-93042Regensburg, Germany Univ Regensburg Franz Josef Strauss Allee 11 Regensburg Germany D-93042
Citazione:
O. Gleich et al., "A quantitative analysis of the nerve fibers in the VIIIth nerve of BelgianWaterslager canaries with a hereditary sensorineural hearing loss", HEARING RES, 151(1-2), 2001, pp. 141-148

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 inthe 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 ofauditory 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 11:59:43