PHENOMENAL COHERENCE OF MOVING VISUAL-PATTERNS
PHENOMENAL COHERENCE OF MOVING VISUAL-PATTERNS
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DOI：
10.1038/300523a0
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发表时间：
1982-01-01
期刊：
影响因子：
64.8
通讯作者：
MOVSHON, JA
中科院分区：
文献类型：
--
作者：
ADELSON, EH;MOVSHON, JA
当通过孔径观察移动光栅时，只有垂直于其条的运动是可见的，因为平行于条的运动不会引起刺激的变化。因为有一系列不同方向和速度的物理运动看起来是相同的，所以光栅的运动是模糊的。相比之下，当两个交叉的移动光栅叠加时，所得到的格子图案通常明确地且可预测地移动。然而，在某些情况下，两个光栅并不联合收割机成为一个单一的相干光感受器，而是看起来彼此滑动。我们已经研究了条件下的相干性和不发生，我们在这里报告说，它取决于相对对比度，空间频率和光栅的运动方向。这些影响可能揭示了以前未研究的性能的高阶阶段的运动分析。
When a moving grating is viewed through an aperture, only motion orthogonal to its bars is visible, as motion parallel to the bars causes no change in the stimulus. Because there is a family of physical motions of various directions and speeds that appear identical, the motion of the grating is ambiguous. In contrast, when two crossed moving gratings are superimposed, the resulting plaid pattern usually moves unambiguously and predictably. In certain cases, however, two gratings do not combine into a single coherent percept, but appear to slide across one another. We have studied the conditions under which coherence does and does not occur, and we report here that it depends on the relative contrasts, spatial frequencies and directions of motion of the gratings. These effects may reveal the previously unstudied properties of a higher order stage of motion analysis.