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Titolo:
Origin of thalamic inputs to the primary, premotor, and supplementary motor cortical areas and to area 46 in macaque monkeys: A multiple retrograde tracing study
Autore:
Rouiller, EM; Tanne, J; Moret, V; Boussaoud, D;
Indirizzi:
Univ Fribourg, Inst Physiol, CH-1700 Fribourg, Switzerland Univ Fribourg Fribourg Switzerland CH-1700 CH-1700 Fribourg, Switzerland Inst Cognit Sci, CNRS UPR 9075, F-69675 Bron, France Inst Cognit Sci Bron France F-69675 CNRS UPR 9075, F-69675 Bron, France
Titolo Testata:
JOURNAL OF COMPARATIVE NEUROLOGY
fascicolo: 1, volume: 409, anno: 1999,
pagine: 131 - 152
SICI:
0021-9967(19990621)409:1<131:OOTITT>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADJACENT CINGULATE CORTEX; NEURONAL-ACTIVITY; FRONTAL-LOBE; VENTRAL ASPECTS; RHESUS-MONKEY; NEURAL REPRESENTATIONS; EFFERENT CONNECTIONS; SENSORIMOTOR CORTEX; MACACA-FASCICULARIS; PREFRONTAL CORTEX;
Keywords:
thalamocortical; primate; fluorescent tracers; motor thalamus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Rouiller, EM Univ Fribourg, Inst Physiol, Rue Musee 5, CH-1700 Fribourg, Switzerland Univ Fribourg Rue Musee 5 Fribourg Switzerland CH-1700 rland
Citazione:
E.M. Rouiller et al., "Origin of thalamic inputs to the primary, premotor, and supplementary motor cortical areas and to area 46 in macaque monkeys: A multiple retrograde tracing study", J COMP NEUR, 409(1), 1999, pp. 131-152

Abstract

The origin of thalamic inputs to distinct motor cortical areas was established in five monkeys to determine whether the motor areas receive inputs from a common thalamic nucleus and the extent to which the territories of origin overlap. To not rely an the rough definition of cytoarchitectonic boundaries in the thalamus, monkeys were subjected to multiple injections of tracers (four to seven) in the primary (M1), premotor (PM), and supplementary (SMA) motor cortical areas and in area 46. The cortical areas were distributed into five groups, each receiving inputs from a specific set of thalamicnuclei: 1) M1; 2) SMA-proper and the caudal part of the dorsal PM (PMdc); 3) the rostral and caudal parts of the ventral PM (PMvr and PMvc); 4) the rostral part of the dorsal PM (PMdr); and 5) the superior and inferior partsof area 46 (area 46sup and area 46inf). A major degree of overlap was obtained for the origins of the thalamocortical projections directed to areas 46inf and 46sup and for those terminating in SMA-proper and PMdc. PMvc and PMvr received inputs from adjacent and/or common thalamic regions. In contrast, the degree of overlap between M1 and SMA was smaller. The projection toM1 shared relatively limited zones of origin with the projections directedto PM. Thalamic inputs to the motor cortical areas (M1, SMA, PMd, and PMv), in general, were segregated from those directed to area 46, except in themediodorsal nucleus, in which there was clear overlap of the territories sending projections to area 46, SMA-proper, and PMdc. (C) 1999 Wiley-Liss, Inc.

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Documento generato il 04/12/20 alle ore 16:24:00