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Titolo:
Organization of somatosensory cortex in three species of marsupials, Dasyurus hallucatus, Dactylopsila trivirgata, and Monodelphis domestica: Neural correlates of morphological specializations
Autore:
Huffman, KJ; Nelson, J; Clarey, J; Krubitzer, L;
Indirizzi:
Univ Calif Davis, Ctr Neurosci, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 is, Ctr Neurosci, Davis, CA 95616 USA Univ Calif Davis, Dept Psychol, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 is, Dept Psychol, Davis, CA 95616 USA Monash Univ, Dept Sci Biol, Clayton, Vic 3168, Australia Monash Univ Clayton Vic Australia 3168 Biol, Clayton, Vic 3168, Australia Univ Queensland, Vis Touch & Hearing Res Ctr, Brisbane, Qld 4072, Australia Univ Queensland Brisbane Qld Australia 4072 Brisbane, Qld 4072, Australia
Titolo Testata:
JOURNAL OF COMPARATIVE NEUROLOGY
fascicolo: 1, volume: 403, anno: 1999,
pagine: 5 - 32
SICI:
0021-9967(19990105)403:1<5:OOSCIT>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
BRUSH-TAILED POSSUM; SOMATIC SENSORY CORTEX; PRIMARY MOTOR CORTEX; TRICHOSURUS-VULPECULA; BODY-SURFACE; AUDITORY-CORTEX; VISUAL-CORTEX; OWL MONKEYS; CORTICAL CONNECTIONS; STRIATE CORTEX;
Keywords:
SII; PV; the primary somatosensory area; evolution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
97
Recensione:
Indirizzi per estratti:
Indirizzo: Krubitzer, L Univ Calif Davis, Ctr Neurosci, 1544 Newton Court, Davis, CA 95616 USA Univ Calif Davis 1544 Newton Court Davis CA USA 95616 616 USA
Citazione:
K.J. Huffman et al., "Organization of somatosensory cortex in three species of marsupials, Dasyurus hallucatus, Dactylopsila trivirgata, and Monodelphis domestica: Neural correlates of morphological specializations", J COMP NEUR, 403(1), 1999, pp. 5-32

Abstract

The organization of somatosensory neocortex was investigated in three species of marsupials, the northern quoll (Dasyurus hallucatus), the striped possum (Dactylopsila trivirgata), and the short-tailed opossum (Monodelphis domestica). In these species, multiunit microelectrode mapping techniques were used to determine the detailed organization of the primary somatosensoryarea (SI). In the striped possum and quoll, the topography of somatosensory regions rostral (R), and caudal (C) to SI were described as well. Lateralto SI, two fields were identified in the striped possum, the second somatosensory area (SII) and the parietal ventral area (PV); in the quoll, there appeared to be only one additional lateral field which we term SII/PV. Visual and auditory cortices adjacent to somatosensory cortex were also explored, but the details of organization of these regions were not ascertained. In these animals, electrophysiological recording results were related to cortical myeloarchitecture and/or cytochrome oxidase staining. In one additional species, the fat-tailed dunnart (Sminthopsis crassicaudata), an architectonic analysis alone was carried out, and compared with the cortical architecture and electrophysiological recording results in the other three species. We discuss our results on the internal organization of SI in relation tothe morphological specializations that each animal possesses. In addition,we discuss the differences in the organization of SI, and how evolutionaryprocesses and developmental and adult neocortical plasticity may contribute to the observed variations in SI. J. Comp. Neurol. 403:5-32, 1999. (C) 1999 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 16:15:58