Retinotopic organization of human visual cortex: departures from the classical model.
Cereb Cortex
; 6(3): 354-61, 1996.
Article
em En
| MEDLINE
| ID: mdl-8670663
ABSTRACT
Retinotopic mapping strategies similar to those used for invasive electrophysiological studies to identify multiple visual areas in monkeys have been adapted for noninvasive studies in humans, using magnetic recordings of brain activity in conjunction with anatomical magnetic resonance imaging. The retinotopic organization of the primary visual area (V1) in the left hemisphere of human subjects was examined by presenting a small patterned stimuli near the vertical and horizontal meridians in the lower right visual field. In contrast with the classical model of V1 retinotopy, our results suggest that the representation of the horizontal meridian does not necessarily correspond in a one-to-one manner with the base of the calcarine fissure and that some lower field stimuli can activate regions in the lower bank of the fissure. The results also indicate significant individual variability in the details of how V1 maps around the calcarine fissure.
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Coleções:
01-internacional
Contexto em Saúde:
1_ASSA2030
Base de dados:
MEDLINE
Assunto principal:
Retina
/
Córtex Visual
Tipo de estudo:
Clinical_trials
/
Health_economic_evaluation
Limite:
Humans
Idioma:
En
Revista:
Cereb Cortex
Ano de publicação:
1996
Tipo de documento:
Article