Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
COMPARISON OF PROJECTION NEURONS IN THE PONTINE NUCLEI AND THE NUCLEUS-RETICULARIS TEGMENTI PONTIS OF THE RAT
Autore:
SCHWARZ C; THIER P;
Indirizzi:
UNIV TUBINGEN,NEUROL KLIN,SEKT VISUELLE SENSOMOTOR,HOPPE SEYLER STR 3D-72076 TUBINGEN GERMANY
Titolo Testata:
Journal of comparative neurology
fascicolo: 3, volume: 376, anno: 1996,
pagine: 403 - 419
SICI:
0021-9967(1996)376:3<403:COPNIT>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
MONKEY MACACA-MULATTA; RHESUS-MONKEY; HORSERADISH-PEROXIDASE; SYNAPTIC ORGANIZATION; SUPERIOR COLLICULUS; BRAIN-STEM; CAT; LIGHT; GRAY; CORTEX;
Keywords:
CEREBELLUM; RETROGRADE TRACING; DENDRITIC MORPHOLOGY; INTRACELLULAR FILLING; FIXED SLICES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
C. Schwarz e P. Thier, "COMPARISON OF PROJECTION NEURONS IN THE PONTINE NUCLEI AND THE NUCLEUS-RETICULARIS TEGMENTI PONTIS OF THE RAT", Journal of comparative neurology, 376(3), 1996, pp. 403-419

Abstract

Dendritic features of identified projection neurons in two precerebellar nuclei, the pontine nuclei (PN) and the nucleus reticularis tegmenti pontis (NRTP) were established by using a combination of retrogradetracing (injection of fluorogold or rhodamine labelled latex microspheres into the cerebellum) with subsequent intracellular filling (lucifer yellow) in fixed slices of pontine brainstem. A multivariate analysis revealed that parameters selected to characterize the dendritic tree such as size of dendritic field, number of branching points, and length of terminal dendrites did not deviate significantly between different regions of the PN and the NRTP. On the other hand, projection neurons in ventral regions of the PN were characterized by an irregular coverage of their distal dendrites by appendages while those in the dorsal PN and the NRTP were virtually devoid of them. The NRTP, dorsal, and medial PN tended to display larger somata and more primary dendritesthan ventral regions of the PN. These differences, however, do not allow the differentiation of projection neurons within the PN from thosein the NRTP. They rather reflect a dorso-ventral gradient ignoring the border between the nuclei. Accordingly, a cluster analysis did not differentiate distinct types of projection neurons within the total sample. In both nuclei, multiple linear regression analysis revealed thatthe size of dendritic fields was strongly correlated with the length of terminal dendrites while it did not depend on other parameters of the dendritic field. Thus, larger dendritic fields seem not to be accompanied by a higher complexity but rather may be used to extend the reach of a projection neuron within the arrangement of afferent terminals. We suggest that these similarities within dendritic properties in PNand NRTP projection neurons reflect similar processing of afferent information in both precerebellar nuclei. (C) 1996 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 13:10:03