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Titolo:
THE DORSAL THALAMUS OF JAWED VERTEBRATES - A COMPARATIVE VIEWPOINT
Autore:
BUTLER AB;
Indirizzi:
IVORY TOWER NEUROBIOL INST,4433 N 33RD ST ARLINGTON VA 22207 GEORGE MASON UNIV,KRASNOW INST ADV STUDY FAIRFAX VA 00000
Titolo Testata:
Brain, behavior and evolution
fascicolo: 4-5, volume: 46, anno: 1995,
pagine: 209 - 223
SICI:
0006-8977(1995)46:4-5<209:TDTOJV>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
PIGEON COLUMBA-LIVIA; TURTLE PSEUDEMYS-SCRIPTA; MEDIAL GENICULATE-BODY; OPTIC TECTUM; ASCENDING CONNECTIONS; TELENCEPHALIC CONNECTIONS; EFFERENT CONNECTIONS; RETINAL PROJECTIONS; AUDITORY PATHWAYS; CAIMAN-CROCODILUS;
Keywords:
EVOLUTION; DORSAL THALAMUS; DIENCEPHALON; FOREBRAIN; JAWED VERTEBRATES; MAMMALS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Citazioni:
121
Recensione:
Indirizzi per estratti:
Citazione:
A.B. Butler, "THE DORSAL THALAMUS OF JAWED VERTEBRATES - A COMPARATIVE VIEWPOINT", Brain, behavior and evolution, 46(4-5), 1995, pp. 209-223

Abstract

In anamniotes, the dorsal thalamus comprises: (1) a caudal division, the collothalamus, which receives its predominant input from the midbrain roof and projects ipsilaterally to the telencephalon, predominantly to the striatum, and (2) a rostral division, the lemnothalamus, which predominantly receives a direct retinal (lemniscal) input and projects bilaterally to the telencephalon, predominantly to the pallium. In amniotes, collothalamic nuclei relay visual, auditory, and somatosensory-multisensory inputs from the midbrain roof to the ipsilateral telencephalon, terminating in both striatum and pallium. For example, the collothalamic visual nuclei consist of the LP-pulvinar complex in mammals and nucleus rotundus in diapsid reptiles, birds, and turtles. Amongamniotes, the latter nuclei are homologous to each other as discrete nuclei, as are the collothalamic auditory and collothalamic somatosensory-multisensory nuclei. Lemnothalamic nuclei (and nuclear groups) in amniotes predominantly (and/or plesiomorphically) receive lemniscal inputs; some project to the telencephalon bilaterally, and most, in contrast to collothalamic nuclei, do not project to the striatum. In mammals, the lemnothalamic nuclei include most of those in the anterior, medial, intralaminar, and ventral nuclear groups and the dorsal lateral geniculate nucleus. In diapsid reptiles, they include the dorsomedial and dorsolateral anterior nuclei and the dorsal lateral optic nucleus;comparable nuclei are present in birds and turtles, with birds additionally having a discrete somatosensory lemniscal relay nucleus. These lemnothalamic nuclei in each amniote radiation are homologous as a field to the lemnothalamus (i.e., nucleus anterior) in anamniotes. Both divisions of the dorsal thalamus were elaborated to some degree in the common ancestral amniote stock. A further major elaboration of the lemnothalamus characterized the ancestral stock of mammals and may have been one of the key events in early mammalian evolution. Birds have independently, to a lesser degree, elaborated the lemnothalamus.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 17:39:57