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Titolo:
INTERCONNECTIONS AMONG NUCLEI OF THE SUBCORTICAL VISUAL SHELL - THE INTERGENICULATE LEAFLET IS A MAJOR CONSTITUENT OF THE HAMSTER SUBCORTICAL VISUAL-SYSTEM
Autore:
MORIN LP; BLANCHARD JH;
Indirizzi:
SUNY STONY BROOK,HLTH SCI CTR,DEPT PSYCHIAT STONY BROOK NY 11794
Titolo Testata:
Journal of comparative neurology
fascicolo: 3, volume: 396, anno: 1998,
pagine: 288 - 309
SICI:
0021-9967(1998)396:3<288:IANOTS>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATERAL GENICULATE-NUCLEUS; ANTERIOR PRETECTAL NUCLEUS; PUPILLARY LIGHT REFLEX; PHASEOLUS-VULGARIS-LEUKOAGGLUTININ; CIRCADIAN ACTIVITY RHYTHMS; WHEAT-GERM-AGGLUTININ; SUPERIOR COLLICULUS; GOLDEN-HAMSTER; OPTIC TRACT; HYPOTHALAMIC TRACT;
Keywords:
PRETECTUM; LATERAL POSTERIOR NUCLEUS; DORSAL LATERAL GENICULATE; VENTRAL LATERAL GENICULATE; SUPERIOR COLLICULUS; SUPRACHIASMATIC NUCLEUS;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
115
Recensione:
Indirizzi per estratti:
Citazione:
L.P. Morin e J.H. Blanchard, "INTERCONNECTIONS AMONG NUCLEI OF THE SUBCORTICAL VISUAL SHELL - THE INTERGENICULATE LEAFLET IS A MAJOR CONSTITUENT OF THE HAMSTER SUBCORTICAL VISUAL-SYSTEM", Journal of comparative neurology, 396(3), 1998, pp. 288-309

Abstract

The intergeniculate leaflet (IGL), a major constituent of the circadian visual system, is one of 12 retinorecipient nuclei forming a ''subcortical visual shell'' overlying the diencephalic-mesencephalic border. The present investigation evaluated IGL connections with nuclei of the subcortical visual shell and determined the extent of interconnectivity between these nuclei. Male hamsters received stereotaxic, iontophoretic injections of the retrograde tracer, cholera toxin beta fragment, or the anterograde tracer, Phaseolus vulgaris-leucoagglutin, into nuclei of the pretectum (medial, commissural, posterior, olivary, anterior, nucleus of the optic tract, posterior limitans), into the superior colliculus, or into the visual thalamic nuclei (lateral posterior, dorsal lateral geniculate, intergeniculate leaflet, ventral lateral geniculate). Retrogradely labeled cell bodies identified nuclei with afferents projecting to the site of injection, whereas the presence of anterogradely labeled fibers with terminals revealed brain nuclei targeted by neurons at the site of injection. The IGL projects bilaterally toall nuclei of the visual shell except the lateral posterior and dorsal lateral geniculate nuclei. The IGL also has afferents from the same set of nuclei, except the nucleus of the optic tract. The extensive bilateral efferent projections distinguish IGL from the ventral lateral geniculate nucleus. The superior colliculus, commissural pretectal, olivary pretectal, and posterior pretectal nuclei also project bilaterally to the majority of subcortical visual nuclei. The IGL has a well-established role in circadian rhythm regulation, but there is as yet no known function for it in the larger context of the subcortical visual system, much of which is involved in oculomotor control. (C) 1998 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:00:24