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Titolo:
Topographic organization of the human primary and secondary somatosensory areas: an fMRI study
Autore:
Del Gratta, C; Della Penna, S; Tartaro, A; Ferretti, A; Torquati, K; Bonomo, L; Romani, GL; Rossini, PM;
Indirizzi:
Univ G DAnnunzio, Dipartimento Sci Clin & Bioimmagini, I-66013 Chieti, Italy Univ G DAnnunzio Chieti Italy I-66013 Bioimmagini, I-66013 Chieti, Italy Univ G DAnnunzio, Ist Tecnol Biomed Avanzate, I-66013 Chieti, Italy Univ GDAnnunzio Chieti Italy I-66013 ed Avanzate, I-66013 Chieti, Italy Ist Nazl Fis Mat, UdR Aquila, Laquila, Italy Ist Nazl Fis Mat Laquila Italy Nazl Fis Mat, UdR Aquila, Laquila, Italy IRCCS, Ctr S Giovanni di Dio FBF, Brescia, Italy IRCCS Brescia ItalyIRCCS, Ctr S Giovanni di Dio FBF, Brescia, Italy AFAR CRCCS Isola Tiberina, Rome, Italy AFAR CRCCS Isola Tiberina Rome Italy CRCCS Isola Tiberina, Rome, Italy
Titolo Testata:
NEUROREPORT
fascicolo: 9, volume: 11, anno: 2000,
pagine: 2035 - 2043
SICI:
0959-4965(20000626)11:9<2035:TOOTHP>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN CEREBRAL-CORTEX; PARKINSONS-DISEASE; EVOKED-POTENTIALS; STIMULATION; LOCALIZATION; ACTIVATION; NEURONS; MONKEY; SII;
Keywords:
functional magnetic resonance imaging; human brain mapping; SEP; somatosensory cortex;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Del Gratta, C Univ G DAnnunzio, Dipartimento Sci Clin & Bioimmagini, Via Vestini 33, I-66013 Chieti, Italy Univ G DAnnunzio Via Vestini 33 Chieti Italy I-66013 Italy
Citazione:
C. Del Gratta et al., "Topographic organization of the human primary and secondary somatosensory areas: an fMRI study", NEUROREPORT, 11(9), 2000, pp. 2035-2043

Abstract

The topographical organization of SI and SII somatosensory areas was investigated using fMRI at 1.5 T and electrical sensory stimulation. Electrical stimuli were delivered unilaterally to the median nerve at the wrist and tothe tibial nerve at the medial malleolus, during a block paradigm study. In all subjects, activation was observed, contralaterally to the stimulated side, in the post-central gyrus, in the posterior parietal cortex, in the mesial pre-frontal region and, bilaterally, in the supratemporal region at the level of the Sylvian fissure. The latter region, corresponding presumably to SII, showed a rough but clearcut topographical organization, with the median nerve areas located more posteriorly. In addition, weaker activations were observed in some subjects in the ipsilateral mesial prefrontal region and in the ipsilateral posterior parietal cortex. Information contained in the present study represent an interesting database for future investigations on the effects of sensorimotor learning in normal individuals on plastic reorganization following a lesion of the primary sensorimotor centers, i.e. in stroke patients, on the topography and balance between upper and lower limb representations in primary and secondary somatosensory cortices. NeuroReport 11:2035-2043 (C) 2000 Lippincott Williams & Wilkins.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 20:38:20