Vishton P M, Cutting J E
Department of Psychology, Cornell University, Ithaca, New York 14853-7601, USA.
J Exp Psychol Hum Percept Perform. 1995 Oct;21(5):978-95. doi: 10.1037//0096-1523.21.5.978.
When an individual moves through a cluttered environment, he or she often fixates an object relatively near his or her path in the middle distance and uses pursuit eye movements to follow it while moving forward. On the basis of previous evidence, either motion fields or displacement fields around the fixated object--two alternative representations of the same information--could be used to determine one's direction of self-movement, sometimes called heading or aimpoint. In a series of 5 experiments, the relationship between these representations was explored and it was found that the displacements of identifiable objects, not their motions, are most likely the direct inputs for wayfinding. It may be that these inputs are used in conjunction with a mental map to determine one's aimpoint. A mathematical framework for this process is proposed.
当一个人在杂乱的环境中移动时，他或她通常会注视路径中间距离相对较近的一个物体，并在向前移动时使用追踪眼球运动来跟随它。根据先前的证据，注视物体周围的运动场或位移场——同一信息的两种替代表示——可用于确定自身运动方向，有时称为航向或瞄准点。在一系列5个实验中，研究了这些表示之间的关系，发现可识别物体的位移，而非其运动，最有可能是寻路的直接输入。可能这些输入与心理地图结合使用来确定一个人的瞄准点。为此过程提出了一个数学框架。
