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Titolo:
Serotonergic innervation of the auditory brainstem of the Mexican free-tailed bat, Tadarida brasiliensis
Autore:
Hurley, LM; Thompson, AM;
Indirizzi:
Univ Texas, Patterson Labs C0920 140, Neurobiol Sect, Austin, TX 78712 USAUniv Texas Austin TX USA 78712 140, Neurobiol Sect, Austin, TX 78712 USA Univ Oklahoma, Hlth Sci Ctr, Dept Otorhinolaryngol, Oklahoma City, OK 73104 USA Univ Oklahoma Oklahoma City OK USA 73104 gol, Oklahoma City, OK 73104 USA
Titolo Testata:
JOURNAL OF COMPARATIVE NEUROLOGY
fascicolo: 1, volume: 435, anno: 2001,
pagine: 78 - 88
SICI:
0021-9967(20010618)435:1<78:SIOTAB>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
DORSAL COCHLEAR NUCLEUS; SUPERIOR OLIVARY COMPLEX; INTERAURAL INTENSITY DIFFERENCES; INFERIOR COLLICULUS; LATERAL LEMNISCUS; GUINEA-PIG; DESCENDING PROJECTIONS; OLIVOCOCHLEAR NEURONS; PTERONOTUS-PARNELLII; MOUSTACHE BAT;
Keywords:
cochlear nucleus; superior olivary complex; lateral lemniscus; inferior colliculus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
75
Recensione:
Indirizzi per estratti:
Indirizzo: Hurley, LM Univ Texas, Patterson Labs C0920 140, Neurobiol Sect, Austin, TX 78712 USA Univ Texas Austin TX USA 78712 biol Sect, Austin, TX 78712 USA
Citazione:
L.M. Hurley e A.M. Thompson, "Serotonergic innervation of the auditory brainstem of the Mexican free-tailed bat, Tadarida brasiliensis", J COMP NEUR, 435(1), 2001, pp. 78-88

Abstract

Anatomical and electrophysiological evidence suggests that serotonin alters the processing of sound in the auditory brainstem of many mammalian species. The Mexican free-tailed bat is a hearing specialist, like other microchiropteran bats. At the same time, many aspects of its auditory brainstem are similar to those in other mammals. This dichotomy raises an interesting question regarding the serotonergic innervation of the bat auditory brainstem: Is the serotonergic input to the auditory brainstem similar in bats and other mammals, or are there specializations in the serotonergic innervationof bats that may be related to their exceptional hearing capabilities? To address this question, we immunocytochemically labeled serotonergic fibers in the brainstem of the Mexican free-tailed bat, Tadarida brasiliensis. We found many similarities in the pattern of serotonergic innervation of the auditory brainstem in Tadarida compared with other mammals, but we also found two striking differences. Similarities to staining patterns in other mammals included a higher density of serotonergic fibers in the dorsal cochlearnucleus and in granule cell regions than in the ventral cochlear nucleus, a high density of fibers in some periolivary nuclei of the superior olive, and a higher density of fibers in peripheral regions of the inferior colliculus compared with its core. The two novel features of serotonergic innervation in Tadarida were a high density of fibers in the fusiform layer of thedorsal cochlear nucleus relative to surrounding layers and a relatively high density of serotonergic fibers in the low-frequency regions of the lateral and medial superior olive. (C) 2001 Wiley-Liss. Inc.

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Documento generato il 29/09/20 alle ore 22:40:18