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ISSN : 1226-9654

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Vol.23 No.2

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Organization of visual dimensions during binocular rivalry: color, form and their interaction

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2011, v.23 no.2, pp.195-214
https://doi.org/10.22172/cogbio.2011.23.2.001



& (2011). Organization of visual dimensions during binocular rivalry: color, form and their interaction. The Korean Journal of Cognitive and Biological Psychology, 23(2), 195-214, https://doi.org/10.22172/cogbio.2011.23.2.001

Abstract

Perceptual organization is a basic propensity of humans’ and animals’ to construct a meaningful whole from individual parts. By exploiting two Gestalt principles of perceptual organization, i.e., color similarity and good form, this study investigated how visual features that are distributed separately to each eye are organized perceptually. For this purpose, interocular grouping was utilized. Interocular grouping is a phenomenon in which incomplete features in two eyes are grouped complementarily and perceived as complete visual object during binocular rivalry. Both the color and the shape of partially occluded objects that comprised rival targets were manipulated. In the preliminary experiment, observers responded by tracking perceived shape. Results showed that color coherence enhances interocular grouping. Encouraged by these results, we specified the conditions into facilitation, neutral, and inhibition and compared the effect of color on shape-based tracking and the effect of shape on color-based tracking in the main experiment. Results showed that interocular grouping was enhanced when color facilitated shape-based grouping (facilitation condition in shape-based tracking). Enhanced interocular grouping was observed both when shape facilitated color-based grouping and when shape was neutral to color-based grouping (facilitation and neutral conditions in color-based tracking). In contrast, interocular grouping was reduced in the inhibition condition in both shape- and color-based tacking. Results suggest that perceptual organization is based on coordination of multiple features comprising an object and that the effect of color on grouping is relatively stronger than that of shape. To our knowledge, this study is the first to reveal the interaction of multiple visual dimensions in interocular grouping, which is a step forward from previous studies that only considered coexistence of those features.

keywords
게슈탈트, 양안 경쟁, 양안간 그룹핑, 색, 형태, 시각적 차원, Gestalt, Binocular rivalry, Interocular grouuping, Color, Form, Visual features

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