Asynchronous processing in vision: Color leads motion
Asynchronous processing in vision: Color leads motion
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DOI：
10.1016/s0960-9822(01)00156-7
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发表时间：
2001-04-17
期刊：
影响因子：
9.2
通讯作者：
Wenderoth, P
中科院分区：
文献类型：
--
作者：
Arnold, DH;Clifford, CWG;Wenderoth, P
已经证明，当颜色和运动方向的变化同时发生时，受试者不会报告它们是同时发生的。相反，对于要报告为同步的更改，运动方向的更改必须先于颜色的更改。为了解释这一观察结果，一些研究人员提出，颜色和运动的神经处理是不同步的。这一解释受到了批评，因为加工时间可能不会与感知的发生时间直接和不变地相关。在这里，我们通过利用颜色相关的运动后效来研究这种可能性。通过将颜色状态与两个运动方向不成比例地关联起来，我们产生并测量了颜色相关的运动后效，作为物理关联范围的函数。观察到的后效与颜色和运动之间的知觉关联是一致的，不同于物理关联。这些发现证明了不同刺激属性的非同步处理，颜色的处理速度比运动更快。这表明知觉经验的时间进程与神经活动的时间进程直接相关。
It has been demonstrated that subjects do not report changes in color and direction of motion as being co-incidental when they occur synchronously. Instead, for the changes to be reported as being synchronous, changes in direction of motion must precede changes in color. To explain this observation, some researchers have suggested that the neural processing of color and motion is asynchronous. This interpretation has been criticized on the basis that processing time may not correlate directly and invariantly with perceived time of occurrence. Here we examine this possibility by making use of the color-contingent motion aftereffect. By correlating color states disproportionately with two directions of motion, we produced and measured color-contingent motion aftereffects as a function of the range of physical correlations. The aftereffects observed are consistent with the perceptual correlation between color and motion being different from the physical correlation. These findings demonstrate asynchronous processing for different stimulus attributes, with color being processed more quickly than motion. This suggests that the time course of perceptual experience correlates directly with that of neural activity.