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Titolo:
Attentional shifts between surfaces: effects on detection and early brain potentials
Autore:
Pinilla, T; Cobo, A; Torres, K; Valdes-Sosa, M;
Indirizzi:
Cuban Ctr Neurosci, Cognit Neurosci Dept, Havana, Cuba Cuban Ctr NeurosciHavana Cuba osci, Cognit Neurosci Dept, Havana, Cuba
Titolo Testata:
VISION RESEARCH
fascicolo: 13, volume: 41, anno: 2001,
pagine: 1619 - 1630
SICI:
0042-6989(200106)41:13<1619:ASBSEO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
VISUAL-ATTENTION; ELECTROPHYSIOLOGICAL EVIDENCE; SELECTIVE ATTENTION; TRANSPARENT MOTION; PERCEPTUAL LOAD; TIME-COURSE; DWELL TIME; ONSET; DETECTABILITY; INFORMATION;
Keywords:
attention; early vision; ERPs; signal detection theory; surfaces; attentional blink;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Pinilla, T Apartado 6880, La Habana, Cuba Apartado 6880 La Habana CubaApartado 6880, La Habana, Cuba
Citazione:
T. Pinilla et al., "Attentional shifts between surfaces: effects on detection and early brain potentials", VISION RES, 41(13), 2001, pp. 1619-1630

Abstract

Two consecutive events transforming the same illusory surface in transparent motion (brief changes in direction) can be discriminated with ease, but a prolonged interference (similar to 500 ms) on the discrimination of the second event arises when different surfaces are concerned [Valdes-Sosa, M., Cobo, A., & Pinilla, T. (2000). Attention to object files defined by transparent motion. Journal of Experimental Psychology: Human Perception and Performance, 26(2), 488-505]. Here we further characterise this phenomenon and compare it to the attentional blink AB [Shapiro, K.L., Raymond, J.E., & Amell, K.M. (1994). Attention to visual pattern information produces the attentional blink in RSVP. Journal of Ekxperimental Psychology : Human Perception and Performance, 20, 357-371]. Similar to the AB, reduced sensitivity (d') was found in the two-surface condition. However, the two-surface cost wasassociated with a reduced N1 brain response in contrast to reports for AB [Vogel, E.K., Luck, S.J., & Shapiro, K. (1998). Electrophysiological evidence for a postperceptual locus of suppression during the attentional blink. Journal of Experimental Psychology: Human Perception and Performance, 24(6), 1656-1674]. The results from this study indicate that the two-surface cost corresponds to competitive effects in early vision. Reasons for the discrepancy with the AB study are considered. (C) 2001 Elsevier Science Ltd. Allrights reserved.

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Documento generato il 13/07/20 alle ore 03:40:34