과밀 효과와 양안 경합의 이심률별 상관관계
Correlation between Crowding and Binocular Rivalry depending on eccentricity
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과밀 효과란, 목표 자극의 주위에 다른 방해 자극들을 제시함으로써 목표 자극의 지각 경험을 방해하는 것이다. 양안 경합은 양 눈에 다른 형태의 자극을 제시했을 때, 겹쳐져서 보이거나 하지 않고, 의식 내에서 교대로 보이게 되는 현상이다. 이 두 현상의 상관관계를 측정하기 위해 실험을 수행하였다. 이심률을 독립변수로 하여 이심률마다 여덟 개의 위치에서 두 가지의 효과를 측정하였고, 이심률 2˚에서 정적 상관관계가 있다는 것을 관찰하였다. 본 연구는 그간 소홀히 하였던 과밀 효과와 양안 경합의 관계에 대해 체계적으로 본격적으로 분석한 연구이며, 의식의 측정치로서의 과밀 효과와 양안 경합에 대해 규명할 수 있는 발판을 제공하였다.
Abstract
Crowding effect is the impairment of peripheral object identification due to nearby objects. Binocular rivalry is a phenomenon in which perception alternates between two different objects presented separately to each eye. The purpose of this study was to investigate the correlation between these two phenomena. We measured the magnitudes of visibility index of these two effects at 8 different locations of 3 different eccentricities (2, 5, and 10°). Significant positive correlation between the two measurements was found only near the fovea (2°). Our study is the demonstration to show relationship between crowding and binocular rivalry.
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