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ISSN : 1226-9654

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Vol.28 No.2

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가려진 물체의 움직임 표상과 지각된 지속시간 확장

The Influence of Amodally Completed Motion on Perceived Duration

한국심리학회지: 인지 및 생물 / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2016, v.28 no.2, pp.271-284
https://doi.org/10.22172/cogbio.2016.28.2.004
김성호 (이화여자대학교)
김성호. (2016). 가려진 물체의 움직임 표상과 지각된 지속시간 확장. 한국심리학회지: 인지 및 생물, 28(2), 271-284, https://doi.org/10.22172/cogbio.2016.28.2.004

초록

움직이는 물체가 다른 물체에 가려 잠시 시야에서 사라질 때도, 관찰자는 가려진 물체의 연속적인 움직임을 지각할 수 있다. 본 연구는 가려져서 보이지 않는 물체의 움직임 표상이 지각된 지속시간에 미치는 영향을 살펴보았다. 삼차원 입체 자극 상에서 표면의 양안시차를 조작하여, 한 물체의 가려진 움직임이 지각되는 조건과 시공간적으로 분리된 두 물체의 순차적 움직임이 지각되는 조건의 움직임 자극을 구현하였다. 이 두 자극의 지각된 지속시간을 각각 가시적인 움직임 자극과 비교한 결과, 가려진 움직임 조건의 지속시간이 상대적으로 더 길게 추정되었다. 이 결과는 시간지각에 영향을 준다고 알려진 시각적 요인인 변화의 현저성, 주의, 예측가능성 등의 효과로 설명되기 어렵다. 본 연구는 움직이는 물체가 가려질 때 발생하는 감각 정보의 시공간적인 공백을 메꾸는, 무형완성된 표면 표상의 지각적 중요성을 보여주며, 움직임 사건의 지속시간 지각이 운동량의 감각 정보가 아닌, 표면 표상이 매개된 상위 수준의 운동 표상에 영향받음을 시사한다.

keywords
time perception, time dilation, tunnel effect, amodal completion, surface representation, 시간지각, 시간확장, 터널효과, 무형완성, 표면표상

Abstract

A moving object is temporarily invisible as it passes behind an occluding surface, but people perceive it as moving continuously behind the occluder, suggesting that the representation of the moving object is amodally maintained during its disappearance. The current study investigated whether the display where object invisibility is interpreted as amodal completion of a hidden object moving behind an occluder results in greater time dilation than in comparable displays that lack the interpretation of amodal completion, by manipulating the binocular disparity depth of the surface which can potentially work as an occluder in 3D displays. The result shows that the display involving amodally completed motion is perceived as longer in duration than the display where object invisibility does not entail amodal completion. This result runs counter to the prediction based on psychophysical factors previously implicated in time perception, such as overall stimulus salency, motion energy, attention and predictability. It suggests that time dilation for moving objects is mediated by higher level motion processing based on surface representation.

keywords
time perception, time dilation, tunnel effect, amodal completion, surface representation, 시간지각, 시간확장, 터널효과, 무형완성, 표면표상

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