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Titolo:
The architecture of the colour centre in the human visual brain: new results and a review
Autore:
Bartels, A; Zeki, S;
Indirizzi:
Univ Coll London, Inst Neurol, Wellcome Dept Cognit Neurol, London WC1E 6BT, England Univ Coll London London England WC1E 6BT eurol, London WC1E 6BT, England
Titolo Testata:
EUROPEAN JOURNAL OF NEUROSCIENCE
fascicolo: 1, volume: 12, anno: 2000,
pagine: 172 - 190
SICI:
0953-816X(200001)12:1<172:TAOTCC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN EXTRASTRIATE CORTEX; POSITRON-EMISSION TOMOGRAPHY; MONKEY PRESTRIATE CORTEX; CEREBRAL-ACHROMATOPSIA; MACAQUE MONKEY; BLIND SEPARATION; CONSCIOUS VISION; VISUOTOPIC ORGANIZATION; FUNCTIONAL SEGREGATION; PROCESSING STREAMS;
Keywords:
achromatopsia; functional magnetic resonance imaging (fMRI); macaque monkey; V4; V4 alpha; V4A;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
131
Recensione:
Indirizzi per estratti:
Indirizzo: Zeki, S Univ Coll London, Inst Neurol, Wellcome Dept Cognit Neurol, Mortimer St, London WC1E 6BT, England Univ Coll London Mortimer St London England WC1E 6BT 6BT, England
Citazione:
A. Bartels e S. Zeki, "The architecture of the colour centre in the human visual brain: new results and a review", EUR J NEURO, 12(1), 2000, pp. 172-190

Abstract

We have used the technique of functional magnetic resonance imaging (fMRI)and a variety of colour paradigms to activate the human brain regions selective for colour. We show here that the region defined previously [Lueck etal. (1989) Nature, 340, 386-389; Zeki et al. (1991) J. Neurosci., 11, 641-649; McKeefry & Zeki (1997) Brain, 120, 2229-2242] as the human colour centre consists of two subdivisions, a posterior one, which we call V4 and an anterior one, which we refer to as V4 alpha, the two together being part of the V4-complex. The posterior area is retinotopically organized while the anterior is not. We discuss our new findings in the context of previous studies of the cortical colour processing system in humans and monkeys. Our newinsight into the organization of the colour centre in the human brain may also account for the variability in both severity and degree of recovery from lesions producing cerebral colour blindness (achromatopsia).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 15:02:22