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Titolo:
Corticotectal and corticostriatal projections from the frontal eye fields of the cat: an anatomical examination using WGA-HRP
Autore:
McHaffie, JG; Thomson, CM; Stein, BE;
Indirizzi:
Wake Forest Univ, Bowman Gray Sch Med, Dept Neurobiol & Anat, Winston Salem, NC 27157 USA Wake Forest Univ Winston Salem NC USA 27157 , Winston Salem, NC 27157 USA Virginia Commonwealth Univ, Med Coll Virginia, Dept Physiol, Richmond, VA 23298 USA Virginia Commonwealth Univ Richmond VA USA 23298 , Richmond, VA 23298 USA
Titolo Testata:
SOMATOSENSORY AND MOTOR RESEARCH
fascicolo: 2, volume: 18, anno: 2001,
pagine: 117 - 130
SICI:
0899-0220(2001)18:2<117:CACPFT>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATERAL SUPRASYLVIAN CORTEX; NIGRA PARS RETICULATA; SUPERIOR COLLICULUS; BASAL GANGLIA; HORSERADISH-PEROXIDASE; CAUDATE-NUCLEUS; SUBCORTICAL CONNECTIONS; SUBSTANTIA NIGRA; EFFERENT CONNECTIONS; PREFRONTAL CORTEX;
Keywords:
basal ganglia; striatum; caudate; putamen; superior colliculus; eye movements;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
76
Recensione:
Indirizzi per estratti:
Indirizzo: McHaffie, JG Wake Forest Univ, Bowman Gray Sch Med, Dept Neurobiol & Anat,Med Ctr Blvd, Winston Salem, NC 27157 USA Wake Forest Univ Med Ctr Blvd Winston Salem NC USA 27157 USA
Citazione:
J.G. McHaffie et al., "Corticotectal and corticostriatal projections from the frontal eye fields of the cat: an anatomical examination using WGA-HRP", SOMAT MOT R, 18(2), 2001, pp. 117-130

Abstract

Corticofugal projections from the frontal eye fields (FEF) are believed toaccess the superior colliculus (SC) directly (i.e., monosynaptically) and indirectly (i.e., multisynaptically) through the basal ganglia. The presentresults suggest that these two pathways are derived from largely segregated populations of corticofugal neurons. Furthermore, while the different subregions of the FEF from which these pathways originate have different termination patterns in the basal ganglia (i.e., striatum, ST), they share a common termination pattern in the SC. Injections of wheat germ agglutinin-horseradish peroxidase (WGA-HRP) into the two major subdivisions of the FEF (presylvian and cruciate sulci) resulted in dense label in both the ST (bilaterally) and the SC (ipsilaterally). Corticostriatal labeling was found in the caudal part of the head of the caudate nucleus (heaviest ipsilaterally), with labeling from cruciate injections located ventromedial to that produced by presylvian injections. Only presylvian injections resulted in labelingin the putamen. Retrograde tracing experiments demonstrated that both presylvian and cruciate corticostriatal projections originated from neurons in lamina III and the upper aspects of lamina V. An additional but small groupof presylvian corticostriatal projections was found in lamina VI. Corticotectal terminal labeling was restricted to the deep laminae of the SC and was derived exclusively from lamina V neurons in cortex. They differed from their corticostriatal counterparts in laminar/sub-laminar location and in soma sizes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 11:40:10