不同框架下的视觉定位

VISUAL LOCALIZATION IN DIFFERENT FRAMES

本实验探讨了对置于正方形、等边三角形和圆中的刺激点所进行的１点定位、２点定位、３点定位，并比较了在定位有框架和定位无框架时的情况。结果发现：（１）在刺激呈现时间为１００ｍｓ和３００ｍｓ时．在３种定位任务中，当定位有框架时被试定位的绝对误差均小于定位无框架的。（２）在两种呈现时间下被试在３种定位任务中的绝对误差均处于同一水平，表现出现了视觉定位中的结构效应，并且几个不同的框架没有不同的作用。

This experiment deals with the visual localization in different frames such as square,equilateral triangle or circle. The stimuli made up of a frame with 1,2or 3 dot (s) are presented on the computer screen rapidly. The subjects are asked to move the mouse to localize the dot (s) in a condition with or without the same blank frame presented,and their responses are recorded by the computer. The results show that the responses accompanied by the same frames as stimuli are much better than those without frames, and the responses to the one, two or three dots are all at the same level. This suggests a structural effect in the visual localization task. Moreover .the different frames have the same effect on the localization. The major aspects of the data are discussed in relation to first--order and secondorder references.