图形同一性对视觉似动的影响

该研究以单字母为刺激材料考察了图形同一性对视觉似动的影响。按照图形同一性、字母顺序及图形位移方向的不同，字母图形分成４类。另外还比较了聚焦和不聚焦条件下的实验结果。实验中要求被试对字母作左向、右向或来回运动的判断。结果表明似动现象不仅受到刺激间的空间关系的影响，而且也受到刺激间的图形同一性的影响。

THE EFFECT OF FORM IDENTITY ON VISUAL APPARENT MOTION

To investigate the effect of form identity on visual apparent motion,several single letters were used as stimuli in the experiment. In terms of to the form identity,the alphabetic order and the direction of display,letters were arranged under four conditions. The focused and non focused conditions were also compared. The subjects were asked to judge the letter's movement: to the left(L-Judgement), to the right (R-judgement), or back and forth (L-R judgement). The results showed that the main effect of the stimulus form and the display mode was significant. The interaction between two factors were also significaant. Under the focused conditiohn,the subjects made more judgements when letters were arranged under conditions 1 and 2; more R-judgements under cindition 4; and more LR judsements under condition 3. But under the nonfocused condition, the majority of the judgements were the L-R judgements, no matter what stimulus forms were used. These results indicated that apparent movement was not only determined by the space relationship, but also by the form identity between two stimuli.