Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
LATERAL SUPERIOR OLIVE PROJECTIONS TO THE INFERIOR COLLICULUS IN NORMAL AND UNILATERALLY DEAFENED FERRETS
Autore:
MOORE DR; RUSSELL FA; CATHCART NC;
Indirizzi:
UNIV OXFORD,PHYSIOL LAB,PARKS RD OXFORD OX1 3PT ENGLAND
Titolo Testata:
Journal of comparative neurology
fascicolo: 2, volume: 357, anno: 1995,
pagine: 204 - 216
SICI:
0021-9967(1995)357:2<204:LSOPTT>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY BRAIN-STEM; ANTEROVENTRAL COCHLEAR NUCLEUS; UNIT EXCITATORY RESPONSES; NORTH-AMERICAN OPOSSUM; LOW-FREQUENCY NEURONS; BINAURAL TONE BURSTS; MERIONES-UNGUICULATUS; ASCENDING PROJECTIONS; CAT; INHIBITION;
Keywords:
HEARING; AUDITORY SYSTEM; COCHLEAR REMOVAL; SENSORINEURAL LOSS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
64
Recensione:
Indirizzi per estratti:
Citazione:
D.R. Moore et al., "LATERAL SUPERIOR OLIVE PROJECTIONS TO THE INFERIOR COLLICULUS IN NORMAL AND UNILATERALLY DEAFENED FERRETS", Journal of comparative neurology, 357(2), 1995, pp. 204-216

Abstract

We have examined the projection from the lateral superior olive (LSO)to the inferior colliculus (IC) in the ferret, with particular interest in the laterality of the projection and in the effects of unilateral cochlear removal in infancy. Large or small deposits of the retrograde tracer wheat germ agglutinin-horseradish peroxidase (WGA-HRP) were made in the IC of anesthetized adult ferrets that either were normallyhearing or had been unilaterally deafened in infancy (P5 or P25). After 2 days, the ferrets were perfused, and frontal sections of the brainstem were treated with tetramethyl benzidine. For large deposits of WGA-HRP, equal numbers of labelled neurons were found evenly spread through both LSOs. Smaller deposits of WGA-HRP produced four results thatcontrasted with previous reports on the cat. First, many more labelled neurons were found in the contralateral than in the ipsilateral LSO. Second, the relative number of labelled neurons in each LSO was independent of whether the deposits were in the ventral or in the dorsal IC. Third, the total number of labelled LSO neurons was independent of whether the deposits were in the ventral or in the dorsal IC. Fourth, the proportion of ipsilateral to contralateral labelled neurons was slightly higher in the medial LSO than in the lateral LSO. Ventral IC deposits resulted in more labelled neurons in the medial LSO, and dorsal IC deposits resulted in more labelled neurons in the lateral LSO, as expected. Neonatal cochlear removal did not change any of these results. We conclude that, in the ferret, the organization of the crossed anduncrossed projections from the LSO to the IC differs from that of thecat, and any similarity with the optic chiasm is not obvious. (C) 1995 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 08:12:18