Watanabe Katsumi, Nijhawan Romi, Khurana Beena, Shimojo Shinsuke
Vanderbilt U, Vanderbilt Vision Research Ctr, Dept of Psychology.
J Exp Psychol Hum Percept Perform. 2001 Aug;27(4):879-894. doi: 10.1037//0096-1523.27.4.879.
When a visual stimulus is flashed at a given location the moment a second moving stimulus arrives at the same location, observers report the flashed stimulus as spatially lagging behind the moving stimulus (the flash-lag effect). The authors investigated whether the global configuration (perceptual organization) of the moving stimulus influences the magnitude of the flash-lag effect. The results indicate that a flash presented near the leading portion of a moving stimulus lags significantly more than a flash presented near the trailing portion. This result also holds for objects consisting of several elements that group to form a unitary percept of an object in motion. The present study demonstrates a novel interaction between the global configuration of moving objects and the representation of their spatial position and may provide a new and useful tool for the study of perceptual organization.
当一个视觉刺激在第二个移动刺激到达同一位置的瞬间在给定位置闪现时，观察者报告闪现的刺激在空间上落后于移动刺激（闪光滞后效应）。作者研究了移动刺激的整体构型（知觉组织）是否会影响闪光滞后效应的大小。结果表明，在移动刺激的前部附近呈现的闪光比在后部附近呈现的闪光滞后得多。这一结果对于由几个元素组成的物体也成立，这些元素组合形成一个运动物体的统一知觉。本研究证明了移动物体的整体构型与其空间位置表征之间的一种新的相互作用，并可能为知觉组织的研究提供一种新的有用工具。
