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Titolo:
SELECTIVE PROCESSING OF SUPERIMPOSED OBJECTS - AN ELECTROPHYSIOLOGICAL ANALYSIS OF OBJECT-BASED ATTENTIONAL SELECTION
Autore:
WEBER TA; KRAMER AF; MILLER GA;
Indirizzi:
UNIV ILLINOIS,BECKMAN INST,DEPT PSYCHOL,405 N MATHEWS AVE URBANA IL 61801
Titolo Testata:
Biological psychology
fascicolo: 1-3, volume: 45, anno: 1997,
pagine: 159 - 182
SICI:
0301-0511(1997)45:1-3<159:SPOSO->2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
BILATERAL STIMULUS ARRAYS; INDEX FOCUSED ATTENTION; VISUAL-ATTENTION; TRANSIENT ATTENTION; SPATIAL LOCATIONS; MOVING ATTENTION; PERCEPTUAL LOAD; FIELD; INFORMATION; ALLOCATION;
Keywords:
ERPS; SPATIAL ATTENTION; OBJECT-BASED ATTENTION; OBJECT REPRESENTATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
71
Recensione:
Indirizzi per estratti:
Citazione:
T.A. Weber et al., "SELECTIVE PROCESSING OF SUPERIMPOSED OBJECTS - AN ELECTROPHYSIOLOGICAL ANALYSIS OF OBJECT-BASED ATTENTIONAL SELECTION", Biological psychology, 45(1-3), 1997, pp. 159-182

Abstract

We investigated whether object-based attentional selection occurs from grouped-array or spatially-invariant representations. Subjects were presented with colored objects and asked to judge whether a particularcolor/shape conjunction was present, regardless of whether the color and shape were part of a single object (same-object condition) or occurred on two different objects (different-object condition). RTs and accuracies were recorded for subjects judgments. ERP components, in particular the P1 and N1, were elicited both from the presentation of the target objects and from a post-display probe that was employed as an index of spatial attention. Consistent with predictions of object-basedselection models, RTs and accuracies were faster on same than on different object trials. N1s elicited by the target objects and Pls elicited by the post-display probes discriminated between same and differentobject trials when the two target objects were superimposed. These data are consistent with the proposal that object-based selection is spatially mediated, even in the case of partially overlapping objects. The data are discussed in terms of space- and object-based models of visual selective attention. (C) 1997 Elsevier Science B.V.

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Documento generato il 20/09/20 alle ore 19:11:22