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Titolo:
Connections of the auditory cortex with the claustrum and the endopiriformnucleus in the cat
Autore:
Beneyto, M; Prieto, JJ;
Indirizzi:
Univ Miguel Hernandez, Inst Neurosci, Dept Histol, San Juan 03550, Alicante, Spain Univ Miguel Hernandez San Juan Alicante Spain 03550 3550, Alicante, Spain CSIC, Alicante, Spain CSIC Alicante SpainCSIC, Alicante, Spain
Titolo Testata:
BRAIN RESEARCH BULLETIN
fascicolo: 5, volume: 54, anno: 2001,
pagine: 485 - 498
SICI:
0361-9230(20010315)54:5<485:COTACW>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANTEROGRADE AXONAL-TRANSPORT; POSTERIOR ECTOSYLVIAN GYRUS; HORSERADISH-PEROXIDASE; CORTICAL CONNECTIONS; AMYGDALOID COMPLEX; VISUAL CLAUSTRUM; MACAQUE MONKEY; FIELD AAF; CLAUSTRONEOCORTICAL PROJECTIONS; CLAUSTROCORTICAL PROJECTIONS;
Keywords:
cerebral cortex; auditory system; telencephalon; limbic system;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
84
Recensione:
Indirizzi per estratti:
Indirizzo: Prieto, JJ Univ Miguel Hernandez, Inst Neurosci, Dept Histol, San Juan 03550, Alicante, Spain Univ Miguel Hernandez San Juan Alicante Spain 03550 nte, Spain
Citazione:
M. Beneyto e J.J. Prieto, "Connections of the auditory cortex with the claustrum and the endopiriformnucleus in the cat", BRAIN RES B, 54(5), 2001, pp. 485-498

Abstract

We studied the connections of eleven auditory cortical areas with the claustrum and the endopiriform nucleus in the cat, by means of cortical injections of either wheat germ agglutinin conjugated to horseradish peroxidase, or biotinylated dextran amines, Unlike previously accepted reports, all auditory areas have reciprocal connections with the ipsi- and contralateral claustrum, though they differ in strength and/or topography. The areas that send the strongest projections are the intermediate region of the posterior ectosylvian gyrus and the insular cortex, followed by the primary auditory cortex and the dorsal portion of the posterior ectosylvian gyrus. The high degree of convergence of cortical axons in the intermediate region of the claustrum, arising from tonotopic and nontonotopic areas, suggests that claustral neurons are unlikely to be well tuned to the frequency of the acousticstimulus. Corticoclaustral axons from any given area cover territories largely overlapping with those occupied by the claustrocortical neurons projecting back to the same area, The location of cortically projecting neurons in the claustrum matches the position of the target cortical area in the cerebral hemisphere, both rostrocaudally and dorsoventrally. These findings suggest that the intermediate region of the claustrum integrates inputs from all auditory cortical areas, and then sends the result of such processing back to every auditory cortical field, On the other hand, the endopiriform nucleus, a limbic-related structure thought to play a role in the acquisition of conditioned fear, would process mostly polymodal information, since itonly receives projections from the insular and temporal cortices, (C) 2001Elsevier Science Inc.

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Documento generato il 28/11/20 alle ore 23:09:51