MODULATION OF THE MOTION AFTEREFFECT BY SELECTIVE ATTENTION
MODULATION OF THE MOTION AFTEREFFECT BY SELECTIVE ATTENTION
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DOI：
10.1038/344060a0
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发表时间：
1990-03-01
期刊：
影响因子：
64.8
通讯作者：
CHAUDHURI, A
中科院分区：
文献类型：
--
作者：
CHAUDHURI, A
运动后效是一个研究得很多、有据可查的现象。在观察一个移动的视觉图案一段时间后，当它停止时，相同的图案似乎会向相反的方向漂移1。心理物理实验，涉及眼间transfer 2，3，dichoptic stimulation 4，和运动后效取决于其他视觉参数，如colour 5，6，orientation 5和texture 7，意味着运动后效产生的水平的视觉皮层。据推测，专门用于检测沿着特定方向运动的皮层神经元在适应期内变得“疲劳”，因此静息平衡随后向与适应刺激相反的方向移动，从而引起后效的感觉8 -13。我发现，如果观察者从事一个单独的歧视任务叠加在一个移动的纹理背景，随后的运动后效的背景是大大减少。运动后效似乎容易受到注意机制的影响。
THE motion aftereffect is a much studied and well documented phenomenon. After viewing a moving visual pattern for a period of time, the same pattern appears to drift in the opposite direction when it is stopped1. Psychophysical experiments involving inter-ocular transfer2,3, dichoptic stimulation4, and motion aftereffects contingent upon other visual parameters such as colour5,6, orientation5and texture7, imply that the motion aftereffect is generated at the level of the visual cortex. It has been hypothesized that cortical neurons specialized for the detection of motion along a particular direction become 'fatigued' during the adaptation period so that the resting equilibrium subsequently shifts in the opposite direction to that of the adapting stimulus, giving rise to the sensation of the aftereffect8–13. I have found that if observers are engaged in a separate discrimination task superimposed on a moving textured background, the subsequent motion aftereffect to the background is considerably reduced. It seems that motion aftereffects are susceptible to attentional mechanisms.