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Attentional requirements in perceptual grouping depend on the processes involved in the organization.
Rashal, Einat; Yeshurun, Yaffa; Kimchi, Ruth.
Afiliação
  • Rashal E; Department of Psychology and Institute of Information Processing and Decision Making, University of Haifa, Haifa, 3498838, Israel. einatrashal@gmail.com.
  • Yeshurun Y; Department of Psychology and Institute of Information Processing and Decision Making, University of Haifa, Haifa, 3498838, Israel.
  • Kimchi R; Department of Psychology and Institute of Information Processing and Decision Making, University of Haifa, Haifa, 3498838, Israel.
Atten Percept Psychophys ; 79(7): 2073-2087, 2017 Oct.
Article em En | MEDLINE | ID: mdl-28681182
Previous studies on the role of attention in perceptual grouping have yielded contradicting findings, some suggesting that grouping requires attention and others indicating that it does not. Kimchi and Razpurker-Apfeld (Psychonomic Bulletin and Review, 11(4), 687-696, 2004) showed that attentional demands in grouping could vary according to the processes involved. The current study expanded on this, examining whether attentional demands vary for (a) different grouping principles and (b) as a function of contingent processing of element segregation and shape formation. We used the inattention paradigm with an online measure, in which participants engaged in an attentionally demanding change-detection task on a small matrix presented on a task-irrelevant backdrop of grouped elements. The backdrop grouping changed or stayed the same independently of any change in the target. Congruency effects produced by changes in backdrop grouping on target-change judgments indicate that the backdrop grouping was accomplished under inattention. The results showed congruency effects when grouping formed columns/rows by proximity but not by shape similarity, and when grouping into a distinct shape by collinearity did not involve element segregation. No congruency effects were found when grouping into a shape by collinearity or connectedness involved element segregation, except when connectedness was combined with color similarity. These results suggest that attentional demands depend on the combination of grouping principles and the complexity of the processes involved in the organization. These findings provide further support for the view that perceptual organization is a multiplicity of processes that vary in attentional demands.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tempo de Reação / Atenção / Percepção de Cores / Percepção de Forma / Julgamento Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tempo de Reação / Atenção / Percepção de Cores / Percepção de Forma / Julgamento Limite: Adult / Female / Humans / Male Idioma: En Ano de publicação: 2017 Tipo de documento: Article