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ISSN : 1226-9654

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논문 투고

Vol.30 No.4

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주의와 양안 통합 지각 학습이 양안 간 억제 불균형 감소에 미치는 영향

The effect of attention and perceptual learning of binocular integration on reducing imbalanced interocular suppression

한국심리학회지: 인지 및 생물 / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2018, v.30 no.4, pp.327-351
https://doi.org/10.22172/cogbio.2018.30.4.002
이은빈 (연세대학교)
장지웅 (인제대학교)
정상철 (연세대학교)
이은빈, 장지웅, & 정상철. (2018). 주의와 양안 통합 지각 학습이 양안 간 억제 불균형 감소에 미치는 영향. 한국심리학회지: 인지 및 생물, 30(4), 327-351, https://doi.org/10.22172/cogbio.2018.30.4.002

초록

두 눈의 시력차가 큰 약시 환자들의 경우 양안 간 불균형적인 억제로 인해 양안 통합에 어려움을 겪는다(Meese, Georgeson, & Baker, 2006). 이를 해소하기 위해 본 연구에서는 먼저 양안 간 억제 측정법들을 상호 비교하였다(실험 1). 이 중 신뢰도가 가장 높으며, 다른 시각 기능을 가장 잘 반영하는 측정법(Xu, He, & Ooi, 2010; 실험 1)을 활용해 정상군 중 일정 수준 이상의 양안 간 불균형적인 억제를 형성하고 있는 참가자를 선정했다(실험 2). 그 후 Xu 등(2010)의 푸시풀 지각 학습법과 Hess, Mansouri, 및 Thompson(2010)의 양안 통합 지각 학습법을 이용해 양안 간 불균형적인 억제를 감소시키고자 했다(실험 3). 실험 결과 두 지각 학습법 모두 비슷한 정도로 양안 간 억제의 불균형을 감소시켰다. 또한 푸시풀 지각 학습법의 비우세안 특정적인 주의는 비우세안에 제시되는 자극의 정보 처리를 촉진시켰고, 우세안이 비우세안을 억제하는 정도를 감소시킴으로써 양안 간 억제의 불균형 감소가 신속하게 나타나도록 유도했다(실험 3). 이 결과는 두 지각 학습법과 비우세안 특정적인 주의가 양안 간 억제의 불균형을 감소하는 데 중요한 역할을 한다는 것을 시사한다.

keywords
Attention, Perceptual learning, Interocular suppression, Amblyopia, 주의, 지각 학습, 양안 간 억제, 약시

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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