Hochberg J, Fallon P
Science. 1976 Dec 3;194(4269):1081-3. doi: 10.1126/science.982065.
Configurations of moving points are often perceptually analyzed into relative and common vectors that are different from the actual motions. If a movement configuration is abruptly replaced by a test point whose objective velocity continues the apparent (but illusory) course of one of the original points, observers perceive that course as uninterrupted and colinear. This finding provides a quantitative measure of the vector extraction phenomenon and was used to show that neither of the two current models adequately fits that phenomenon.
运动点的构型通常在感知上被分析为与实际运动不同的相对矢量和公共矢量。如果一个运动构型被一个测试点突然取代，该测试点的目标速度延续了原始点之一的表观（但虚幻）轨迹，观察者会将该轨迹视为不间断且共线的。这一发现为矢量提取现象提供了一种定量测量方法，并被用于表明当前的两种模型都不能充分拟合该现象。
