Psychophysical study on interactions betweenobject perception and motion perception

本研究探讨了物体表面特征或轮廓信息对运动知觉相关现象的影响。首先，我们研究了是否以及如何突然变化的预览蒙版的颜色会影响蒙版预览效果，其中对象替代蒙版在很大程度上衰减蒙版预览。我们发现在目标起始处突然改变遮罩颜色会破坏遮罩预览效果，即恢复替代遮罩。其次，我们研究了轮廓模糊的接近对象上的估计时间接触（TTC）的效果。我们操纵degreeof模糊和测量TTC估计的圆形刺激与尖锐或模糊的边缘。结果表明，TTC的估计值随模糊程度的增加而增加

The present study examined the effects of surface feature or contour information of objects on several phenomena related to motion perception. Firstly, we investigated whether and how abrupt change in the color of a previewed mask affects the mask preview effect, where object substitution masking is largely attenuated by mask preview. Wefound that abruptly changing the mask color at the target onset disrupted mask preview effect, that is, substitution masking was reinstated. Secondly, we examined the effect of contour blur of an approaching object on its estimated time-to-contact (TTC). We manipulated the degreeof blur and measured TTC estimation for a circular stimulus with a sharp or blurred edge. The results showed that estimated TTC increased with increasing the degree of blur