Moulden B, Begg H
Perception. 1986;15(2):139-55. doi: 10.1068/p150139.
Several psychophysical experiments are described which test and uphold predictions derived from the Marr-Ullman model of movement detection. First, we demonstrate the existence of adaptation which is specific not merely to the direction of movement of an edge, but also to its contrast polarity. Second, it is shown that adaptation to a spatially homogeneous field whose luminance is modulated according to a temporal sawtooth waveform produces predictable changes in sensitivity to the movement of an edge; these changes, too, are specific to particular conjunctions of direction and edge polarity. Third, similar changes in sensitivity are demonstrated to occur when the luminance of an edge is physically perturbed at the moment of its displacement. Finally, it is shown that, as predicted, the sudden onset of an edge can itself give rise to a momentary impression of movement, the apparent direction of which depends upon the change in luminance that accompanies the onset of the edge.
本文描述了几个心理物理学实验，这些实验对从马尔-乌尔曼运动检测模型得出的预测进行了测试和验证。首先，我们证明了适应性的存在，这种适应性不仅特定于边缘运动的方向，还特定于其对比度极性。其次，研究表明，适应于亮度根据时间锯齿波形调制的空间均匀场会使对边缘运动的敏感度产生可预测的变化；这些变化同样特定于方向和边缘极性的特定组合。第三，当边缘在位移瞬间其亮度受到物理干扰时，也会出现类似的敏感度变化。最后，研究表明，正如预测的那样，边缘的突然出现本身会引起瞬间的运动印象，其明显方向取决于边缘出现时伴随的亮度变化。
