반향 눈 운동 동안에 관찰되는 운동 자극의 3차원 경로 지각 왜곡 = Perceptual distortion of the 3D path of a moving object during disconjugate eye movements

국문 초록 (Abstract)

본 연구의 목적은 움직이는 대상의 3차원 경로가 반향 눈 운동에 의하여 체계적으로 왜곡되어 지각되는지를 규명하는 것이었다. 실험이 진행되는 동안에 피험자들은 깊이차원에서 움직이는 추적 점을 추적하면서 배경과 상이한 명도를 갖는 움직이는 대상의 윗부분과 아랫부분 중에서 피험자에게 가까운 쪽이 어느 쪽인지를 보고하였다. 피험자들은 움직이는 대상의 3차원 경로를 반향 눈 운동의 방향에 따라서 체계적으로 왜곡하여 지각하였으며, 움직이는 대상의 주위에 존재하는 참조대상은 3차원 경로지각 왜곡을 완벽하게 소멸시키지는 못하지만 3차원 경로지각의 왜곡정도를 감소시켰다. 이와 같은 실험결과는 우리의 시각체계가 반향 눈 운동에 의하여 발생하는 양안시차를 눈 위치 정보를 이용하여 적절하게 보정하지 못하며, 반향 눈 운동에 의해 발생한 양안시차를 보정하는데 참조자극 정보를 부분적으로 이용할 수 있음을 시사한다.

다국어 초록 (Multilingual Abstract)

The purpose of the research was to examine whether the perception of the three dimensional path of a moving object was systematically distorted by disconjugate eye movements. Subjects were required to report which part of the path of a vertically moving luminance- defined target object was closer to themselves while pursuing an object translating in depth dimension. Systematic perceptual distortion of the 3D path of the vertically moving luminance-defined object was found during disconjugate eye movements. Presence of a reference stimulus reduced the amount of perceptual distortion, although it did not completely remove it. This result implies that the eye movement-induced disparities are not completely compensated for with eye position information and that reference information might be importantly used in the compensation of eye movement-induced disparities.

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