The effects of eccentricity and retinal illuminance on the illusory motion seen in a stationary luminance gradient
The effects of eccentricity and retinal illuminance on the illusory motion seen in a stationary luminance gradient
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DOI：
10.1016/j.visres.2008.06.015
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发表时间：
2008-09-01
期刊：
影响因子：
1.8
通讯作者：
Murakami, Ikuya
中科院分区：
文献类型：
--
作者：
Hisakata, Rumi;Murakami, Ikuya
Kitaoka最近报道了一种名为旋转蛇的新错觉[Kitaoka，A.，& Ashida，H.（2003年）的报告。边缘漂移错觉的现象特征。视觉，15，261-262]，其中一个静止的模式似乎不断旋转。在第一个实验中，我们试图量化这种错觉在外围更好地感知的轶事。刺激是由阶梯亮度图案组成的环，并呈现在左侧视野中。随着偏心率增加到10-14度，建立感知平稳性所需的抵消速度增加。在接下来的实验中，我们研究了视网膜照度的影响。有趣的是，抵消速度随着视网膜照度的降低而降低。我们还估计了人类的时间脉冲响应在一些视网膜照度下，通过使用双脉冲方法，以确认脉冲响应的形状实际上从双相到双相的变化，这表明瞬态处理系统在较低的照度下具有较弱的活动。我们的结论是，一些短暂的时间处理系统是必要的错觉。(c)2008爱思唯尔有限公司保留所有权利。
Kitaoka recently reported a novel illusion named the Rotating Snakes [Kitaoka, A., & Ashida, H. (2003). Phenomenal characteristics of the peripheral drift illusion. Vision, 15, 261-262], in which a stationary pattern appears to rotate constantly. In the first experiment, we attempted to quantify the anecdote that this illusion is better perceived in the periphery. The stimulus was a ring composed of stepwise luminance patterns and was presented in the left visual field. With increasing eccentricity up to 10-14 deg, the cancellation velocity required to establish perceptual stationarity increased. In the next experiment, we examined the effect of retinal illuminance. Interestingly, the cancellation velocity decreased as retinal illuminance was decreased. We also estimated the human temporal impulse response at some retinal illuminances by using the double-pulse method to confirm that the shape of the impulse response actually changes from biphasic to monophasic, which indicates that the transient processing system has weaker activities at lower illuminances. We conclude that some transient temporal processing system is necessary for the illusion. (c) 2008 Elsevier Ltd. All rights reserved.