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The effect of attention and perceptual learning of binocular integration on reducing imbalanced interocular suppression
Abstract
People, who have a large difference in visual acuity between the two eyes, have trouble in binocular integration because of imbalanced interocular suppression which occurs before binocular summation (Meese, Georgeson, & Baker, 2006). To reduce imbalanced interocular suppression, the current study first compared three SED–measurement methods suggested by previous studies (Experiment 1). In Experiment 2, we selected participants who had large imbalance of interocular suppression by using Xu, He, and Ooi (2012)’s method which had the highest reliability and reflected the other visual abilities better than the other methods in Experiment 1. Those who were selected participated in Experiment 3, designed to reduce imbalance of interocular suppression by using a push-pull protocol (Xu, He, & Ooi, 2010) and perceptual learning of binocular integration (Hess, Mansouri, & Thompson, 2010). We found both training methods were effective in reducing imbalance of interocular suppression. The effect of non-dominant eye-specific attention was manifested in two different ways: facilitating information processing of a non-dominant eye and suppressing a dominant eye for faster emergence of significant reduction of the interocular suppression. Our results suggest that non-dominant eye-specific attention plays a critical role in reducing imbalanced interocular suppression.
- keywords
- Attention, Perceptual learning, Interocular suppression, Amblyopia, 주의, 지각 학습, 양안 간 억제, 약시
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