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Titolo:
Macaque red nucleus: Origins of spinal and olivary projections and terminations of cortical inputs
Autore:
Burman, K; Darian-Smith, C; Darian-Smith, I;
Indirizzi:
Univ Melbourne, Dept Anat & Cell Biol, Brain Res Lab, Melbourne, Vic 3052,Australia Univ Melbourne Melbourne Vic Australia 3052 Melbourne, Vic 3052,Australia
Titolo Testata:
JOURNAL OF COMPARATIVE NEUROLOGY
fascicolo: 2, volume: 423, anno: 2000,
pagine: 179 - 196
SICI:
0021-9967(20000724)423:2<179:MRNOOS>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
GABA-GOLD TECHNIQUE; MACACA-FASCICULARIS; MOTOR CORTEX; CORTICOSPINAL PROJECTIONS; WGA-HRP; SYNAPTIC ORGANIZATION; ANTEROGRADE TRANSPORT; POSTNATAL-DEVELOPMENT; AXONAL-TRANSPORT; LUCIFER YELLOW;
Keywords:
primate; rubrospinal; rubroolivary; corticorubral connections; three-dimensional maps;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Darian-Smith, I Univ Melbourne, Dept Anat & Cell Biol, Brain Res Lab, Melbourne, Vic 3052,Australia Univ Melbourne Melbourne Vic Australia 3052 052,Australia
Citazione:
K. Burman et al., "Macaque red nucleus: Origins of spinal and olivary projections and terminations of cortical inputs", J COMP NEUR, 423(2), 2000, pp. 179-196

Abstract

The cerebellar, spinal, bulbar, and cortical connections of the mammalian red nucleus imply a motor role. However, what information the red nucleus receives, processes, and distributes is poorly understood, partly because the rubral microcircuitry, especially in primates, remains incompletely defined. Multiple retrogradely transported fluorescent tracers were injected into the spinal cord and inferior olive of the macaque to label rubrospinal and rubroolivary neuron populations, respectively. Anterograde dextran amineswere used to label the terminals of corticorubral neurons. These data provided the topographic framework for examining the morphology of rubral neurons in the accompanying paper (Burman et al. [2000]). Soma profiles of rubrospinal and rubro-olivary neurons were respectively segregated in the magnocellular and parvocellular nuclei. A subpopulation of neurons (DL-spinal cells) with their somas immediately dorsolateral to the rostral magnocellular nucleus and its capsule, also projected to the spinal cord, as did clustersof neurons in the periaqueductal grey matter. Terminals of corticorubral axons originating from ipsilateral primary motor area 4 (the densest projection), the supplementary motor area, cingulate area 24, area 8, and posterior parietal area 5, were each mapped in the parvocellular red nucleus. Only area 4 projected to the magnocellular red nucleus, and this projection as small. DL-spinal neurons had no cortical input. The somatotopic organizationof rubral connections was examined only in (a) the corticorubral input from motor area 4, and (b) the rubrospinal and DL-spinal projections. These connections and their somatotopic alignment, were mapped in a 3-dimensional reconstruction of the red nucleus. J. Comp. Neurol. 423:179-196, 2000. (C) 2000 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 15:59:51