VATER, M and CASSEDAY, JH and COVEY, E (1995) CONVERGENCE AND DIVERGENCE OF ASCENDING BINAURAL AND MONAURAL PATHWAYS FROM THE SUPERIOR OLIVES OF THE MOUSTACHED BAT. JOURNAL OF COMPARATIVE NEUROLOGY, 351 (4). pp. 632-646. ISSN 0021-9967,
Full text not available from this repository.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, neurons in 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 cells in 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 the lateral 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 olives overlap extensively at their targets. (C) 1995 Wiley-Liss, Inc.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AUDITORY BRAIN-STEM; INFERIOR COLLICULUS; OLIVARY COMPLEX; PTERONOTUS-PARNELLII; MOUSTACHED BAT; SOUND LOCALIZATION; LATERAL LEMNISCUS; ECHOLOCATING BAT; ACOUSTIC CHIASM; INTERAURAL TIME; ECHOLOCATION; MEDIAL SUPERIOR OLIVE; LATERAL SUPERIOR OLIVE; DORSAL NUCLEUS OF THE LATERAL LEMNISCUS; INFERIOR COLLICULUS |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/52790 |
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