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Titolo:
Anisotropic organization of the rat superior paraolivary nucleus
Autore:
Saldana, E; Berrebi, AS;
Indirizzi:
Univ Salamanca, Fac Med, Inst Neurociencia Castilla & Leon, Dept Biol Celular & Patol, Salamanca 37007, Spain Univ Salamanca Salamanca Spain 37007 lar & Patol, Salamanca 37007, Spain W Virginia Univ, Sch Med, Grad Program Neurosci, Dept Otolaryngol Head & Neck Surg, Morgantown, WV 26506 USA W Virginia Univ Morgantown WV USA 26506ck Surg, Morgantown, WV 26506 USA W Virginia Univ, Sch Med, Grad Program Neurosci, Dept Anat, Morgantown, WV26506 USA W Virginia Univ Morgantown WV USA 26506 ept Anat, Morgantown, WV26506 USA
Titolo Testata:
ANATOMY AND EMBRYOLOGY
fascicolo: 4, volume: 202, anno: 2000,
pagine: 265 - 279
SICI:
0340-2061(200010)202:4<265:AOOTRS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY BRAIN-STEM; DORSAL COCHLEAR NUCLEUS; PHYSIOLOGICAL-RESPONSE PROPERTIES; NORTH-AMERICAN OPOSSUM; GUINEA-PIG COCHLEA; INFERIOR COLLICULUS; OLIVARY COMPLEX; LATERAL LEMNISCUS; DESCENDING PROJECTIONS; MEDIAL NUCLEUS;
Keywords:
auditory brainstem; biotinylated dextran; horseradish peroxidase; inferior colliculus; superior olivary complex;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
107
Recensione:
Indirizzi per estratti:
Indirizzo: Saldana, E Univ Salamanca, Fac Med, Inst Neurociencia Castilla & Leon, Dept Biol Celular & Patol, Salamanca 37007, Spain Univ Salamanca Salamanca Spain 37007 , Salamanca 37007, Spain
Citazione:
E. Saldana e A.S. Berrebi, "Anisotropic organization of the rat superior paraolivary nucleus", ANAT EMBRYO, 202(4), 2000, pp. 265-279

Abstract

In rodents, the superior paraolivary nucleus (SPON) is one of the major nuclei of the superior olivary complex that innervate the inferior colliculus. To analyze the intrinsic organization of the SPON and to gain further insight into its relationship with the inferior colliculus, the neuroanatomical tracers biotinylated dextran and horseradish peroxidase were unilaterallyinjected into different regions of the central nucleus of the inferior colliculus of adult albino rats. Both tracers resulted in retrograde labeling of SPON cell bodies. In addition, biotinylated dextran rendered excellent filling of dendritic and axonal processes within the nucleus. Our results confirm that the projection from the SPON to the central nucleus of the inferior colliculus is nearly exclusively ipsilateral and strictly topographic. Furthermore, our data show that virtually all SPON neurons participate in this projection. The labeling with biotinylated dextran reveals that typicalSPON neurons are medium to large multipolar cells with four to seven thick, long, scarcely branched and smooth dendrites that extend over long distances within a nearly parasagittal plane and intermingle with similarly oriented axonal plexuses. Some of the neurons located ventrally within the nucleus possess dendrites that extend ventrally beyond the limits of the SPON topenetrate into the underlying ventral nucleus of the trapezoid body. The parallel arrangement of flattened dendritic and axonal fields within the SPON is reminiscent of the fibrodendritic laminae found in other mammalian auditory nuclei. This fact and the available data about the connectivity of the nucleus stress the similarities between the SPON and the principal nucleiof the superior olivary complex.

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Documento generato il 20/09/20 alle ore 00:21:44