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Titolo:
CONVERGENCE AND DIVERGENCE OF ASCENDING BINAURAL AND MONAURAL PATHWAYS FROM THE SUPERIOR OLIVES OF THE MOUSTACHED BAT
Autore:
VATER M; CASSEDAY JH; COVEY E;
Indirizzi:
DUKE UNIV,MED CTR,DEPT NEUROBIOL,POB 3209 DURHAM NC 27710 DUKE UNIV,MED CTR,DEPT NEUROBIOL DURHAM NC 27710 UNIV REGENSBURG,INST ZOOL D-93040 REGENSBURG GERMANY
Titolo Testata:
Journal of comparative neurology
fascicolo: 4, volume: 351, anno: 1995,
pagine: 632 - 646
SICI:
0021-9967(1995)351:4<632:CADOAB>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY BRAIN-STEM; INFERIOR COLLICULUS; OLIVARY COMPLEX; PTERONOTUS-PARNELLII; MOUSTACHED BAT; SOUND LOCALIZATION; LATERAL LEMNISCUS; ECHOLOCATING BAT; ACOUSTIC CHIASM; INTERAURAL TIME;
Keywords:
ECHOLOCATION; MEDIAL SUPERIOR OLIVE; LATERAL SUPERIOR OLIVE; DORSAL NUCLEUS OF THE LATERAL LEMNISCUS; INFERIOR COLLICULUS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
M. Vater et al., "CONVERGENCE AND DIVERGENCE OF ASCENDING BINAURAL AND MONAURAL PATHWAYS FROM THE SUPERIOR OLIVES OF THE MOUSTACHED BAT", Journal of comparative neurology, 351(4), 1995, pp. 632-646

Abstract

The lateral superior olive and medial superior olive give rise to pathways that terminate in the dorsal nucleus of the lateral lemniscus and central nucleus of the inferior colliculus. In most mammals, neuronsin both the medial and lateral superior olives are binaural, but in the mustached bat most neurons in the medial superior olive are monaural. The aims of this study were to determine how the inputs to the medial superior olive contribute to its monaurality and to determine whether the ascending projections from the lateral and medial superior olives overlap or remain segregated at their targets. Injections of two different tracers were placed in tonotopically matched areas of the lateral and medial superior olives in the same animal. Retrograde transport from injections in the medial superior olive labeled spherical cellsin the contralateral anteroventral cochlear nucleus and principal cells in the ipsilateral medial nucleus of the trapezoid body. Few cells were labeled in ipsilateral cochlear nucleus. Anterograde transport resulted in tonotopically specific distributions of label with the same laterality as in nonecholocating mammals. In the dorsal nucleus of thelateral lemniscus, label from the lateral and medial superior olives largely overlapped. In the inferior colliculus, label from the two sources overlapped in the high and low frequency ranges, but in the frequency range around 60 kHz, label from the medial superior olive extended more dorsally than that from the lateral superior olive. These results indicate that projections of the lateral and medial superior olivesoverlap extensively at their targets. (C) 1995 Wiley-Liss, Inc.

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Documento generato il 04/12/20 alle ore 23:54:54