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Titolo:
Local collateral projections from the medial superior olive to the superior paraolivary nucleus in the gerbil
Autore:
Kuwabara, N; Zook, JM;
Indirizzi:
Univ Louisville, Sch Med, Hlth Sci Ctr, Dept Anat Sci & Neurobiol, Louisville, KY 40292 USA Univ Louisville Louisville KY USA 40292 urobiol, Louisville, KY 40292 USA Ohio Univ, Dept Biol Sci, Athens, OH 45701 USA Ohio Univ Athens OH USA 45701 o Univ, Dept Biol Sci, Athens, OH 45701 USA Ohio Univ, OUCOM, Athens, OH 45701 USA Ohio Univ Athens OH USA 45701Ohio Univ, OUCOM, Athens, OH 45701 USA
Titolo Testata:
BRAIN RESEARCH
fascicolo: 1, volume: 846, anno: 1999,
pagine: 59 - 71
SICI:
0006-8993(19991030)846:1<59:LCPFTM>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
VENTRAL COCHLEAR NUCLEUS; AUDITORY BRAIN-STEM; FREE-TAILED BAT; INFERIOR COLLICULUS; TRAPEZOID BODY; GUINEA-PIG; PTERONOTUS-PARNELLII; MUSTACHE BAT; PRINCIPAL CELLS; HORSERADISH-PEROXIDASE;
Keywords:
medial superior olive; superior paraolivary nucleus; intracellular labeling; prelabeling; tissue slice; gerbil;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
79
Recensione:
Indirizzi per estratti:
Indirizzo: Kuwabara, N Univ Louisville, Sch Med, Hlth Sci Ctr, Dept Anat Sci & Neurobiol, Louisville, KY 40292 USA Univ Louisville Louisville KY USA 40292 isville, KY 40292 USA
Citazione:
N. Kuwabara e J.M. Zook, "Local collateral projections from the medial superior olive to the superior paraolivary nucleus in the gerbil", BRAIN RES, 846(1), 1999, pp. 59-71

Abstract

Local collateral projections from the medial superior olivary nucleus in the gerbil auditory brainstem were examined to study the possible communication of this nucleus with periolivary cell groups. The projections were investigated using intracellular and extracellular labeling with Biocytin in the medial superior olive (MSO) in brainstem tissue slices. Collateral axons were found to branch from the main axons of the central cells of the MSO asthe latter passed through a dorsally neighboring periolivary nucleus, the superior paraolivary nucleus (SPN), toward the ipsilateral inferior colliculus (IC), their traditionally accepted target. Bouton-like endings and en passant varicosities of these collaterals appeared to contact the somata andproximal dendrites of cells within the SPN. Furthermore, close observationrevealed that these collaterals terminate on at least two types of SPN cells. Intracellular labeling of the collateral axons of the MSO neurons combined with retrograde prelabeling of their target cells, however, revealed that the collaterals selectively contact the cells of the SPN that project tothe ipsilateral IC. A link between the MSO and SPN has not been reported previously. This connection is of interest since SPN cells themselves project either to the cochlear nuclei (CN) or the IC. The MSO-SPN projection identified here raises the possibility that the latter may serve as an ancillary channel to convey MSO information to the IC. (C) 1999 Elsevier Science B.V. All rights reserved.

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Documento generato il 01/12/20 alle ore 16:20:02