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Titolo:
A limit to the speed of processing in ultra-rapid visual categorization ofnovel natural scenes
Autore:
Fabre-Thorpe, M; Delorme, A; Marlot, C; Thorpe, S;
Indirizzi:
Fac Med Rangueil, Ctr Rech Cerveau & Cognit, UPS, CNRS,UMR 5549, Toulouse,France Fac Med Rangueil Toulouse France t, UPS, CNRS,UMR 5549, Toulouse,France
Titolo Testata:
JOURNAL OF COGNITIVE NEUROSCIENCE
fascicolo: 2, volume: 13, anno: 2001,
pagine: 171 - 180
SICI:
0898-929X(200103)13:2<171:ALTTSO>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOP-DOWN PROCESSES; OBJECT RECOGNITION; FACE RECOGNITION; CORTEX; BRAIN; HUMANS; MECHANISMS; ATTENTION; NEURONS; PERCEPTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Fabre-Thorpe, M Fac Med Rangueil, Ctr Rech Cerveau & Cognit, UPS, CNRS,UMR5549, Toulouse,France Fac Med Rangueil Toulouse France 5549, Toulouse,France
Citazione:
M. Fabre-Thorpe et al., "A limit to the speed of processing in ultra-rapid visual categorization ofnovel natural scenes", J COGN NEUR, 13(2), 2001, pp. 171-180

Abstract

The processing required to decide whether a briefly flashed natural scene contains an animal can be achieved in 150 msec (Thorpe, Fize, & Marlot, 1996). Here we report that extensive training with a subset of photographs over a 3-week period failed to increase the speed of the processing underlyingsuch Rapid Visual Categorizations: Completely novel scenes could be categorized just as fast as highly familiar ones. Such data imply that the visualsystem processes new stimuli at a speed and with a number of stages that cannot be compressed. This rapid processing mode was seen with a wide range of visual complex images, challenging the idea that short reaction times can only be seen with simple visual stimuli and implying that highly automatic feed-forward mechanisms underlie a far greater proportion of the sophisticated image analysis needed for everyday vision than is generally assumed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/01/20 alle ore 12:16:31