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Titolo:
Auditory triggered mental imagery of shape involves visual association areas in early blind humans
Autore:
De Volder, AG; Toyama, H; Kimura, Y; Kiyosawa, M; Nakano, H; Vanlierde, A; Wanet-Defalque, MC; Mishina, M; Oda, K; Ishiwata, K; Senda, M;
Indirizzi:
Tokyo Metropolitan Inst Gerontol, Positron Med Ctr, Itabashi Ku, Tokyo 1730015, Japan Tokyo Metropolitan Inst Gerontol Tokyo Japan 1730015 okyo 1730015, Japan Univ Catholique Louvain, Sch Med, Neural Rehabil Engn Unit, B-1200 Brussels, Belgium Univ Catholique Louvain Brussels Belgium B-1200 B-1200 Brussels, Belgium Univ Catholique Louvain, Sch Med, Positron Tomog Lab, B-1200 Brussels, Belgium Univ Catholique Louvain Brussels Belgium B-1200 B-1200 Brussels, Belgium Natl Inst Radiol Sci, Chiba 260, Japan Natl Inst Radiol Sci Chiba Japan 260 l Inst Radiol Sci, Chiba 260, Japan Tokyo Med & Dent Univ, Dept Ophthalmol, Tokyo, Japan Tokyo Med & Dent Univ Tokyo Japan t Univ, Dept Ophthalmol, Tokyo, Japan Univ Tsukuba, Tokyo, Japan Univ Tsukuba Tokyo JapanUniv Tsukuba, Tokyo, Japan Nippon Med Sch, Dept Internal Med 2, Tokyo 113, Japan Nippon Med Sch Tokyo Japan 113 ch, Dept Internal Med 2, Tokyo 113, Japan
Titolo Testata:
NEUROIMAGE
fascicolo: 1, volume: 14, anno: 2001,
parte:, 1
pagine: 129 - 139
SICI:
1053-8119(200107)14:1<129:ATMIOS>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; TOTALLY CONGENITALLY BLIND; FUNCTIONAL-ANATOMY; PERIPHERAL BLINDNESS; CAPACITY LIMITATIONS; CEREBRAL-CORTEX; BRAIN; OBJECT; PET; NEUROPSYCHOLOGY;
Keywords:
functional imaging; human blindness; positron emission tomography; neural plasticity; visual cortex (extrastriate);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: De Volder, AG Tokyo Metropolitan Inst Gerontol, Positron Med Ctr, ItabashiKu, 35-2 Sakaecho, Tokyo 1730015, Japan Tokyo Metropolitan Inst Gerontol 35-2 Sakaecho Tokyo Japan 1730015
Citazione:
A.G. De Volder et al., "Auditory triggered mental imagery of shape involves visual association areas in early blind humans", NEUROIMAGE, 14(1), 2001, pp. 129-139

Abstract

Previous neuroimaging studies identified a large network of cortical areasinvolved in visual imagery in the human brain, which includes occipitotemporal and visual associative areas. Here we test whether the same processes can be elicited by tactile and auditory experiences in subjects who became blind early in life. Using positron emission tomography, regional cerebral blood flow was assessed in six right-handed early blind and six age-matchedcontrol volunteers during three conditions: resting state, passive listening to noise sounds, and mental imagery task (imagery of object shape) triggered by the sound of familiar objects. Activation foci were found in occipitotemporal and visual association areas, particularly in the left fusiform gyrus (Brodmann areas 19-37), during mental imagery of shape by both groups. Since shape imagery by early blind subjects does involve similar visual structures as controls at an adult age, it indicates their developmental crossmodal reorganization to allow perceptual representation in the absence ofvision. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 21:39:20