Symmetry in haptic and in visual shape perception
Symmetry in haptic and in visual shape perception
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DOI：
10.3758/bf03206862
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发表时间：
1998-04-01
期刊：
影响因子：
--
通讯作者：
Reales, JM
中科院分区：
文献类型：
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作者：
Ballesteros, S;Millar, S;Reales, JM
四个实验测试的假设，双边对称性是一个偶然的编码特性的视觉，但也可以引起作为一个偶然的影响，在触摸，提供了足够的空间参考信息最初可用于触觉输入空间组织。实验1表明，对称性促进视觉处理，即使任务需要的判断刺激关闭，而不是检测的对称性。同样的任务和刺激未能表现出对称性的影响，触觉扫描由一个手指（实验2），实验3发现促进效果垂直对称开放的刺激，虽然不是封闭的模式，在两个食指探索时，食指已预先对准身体中轴线，以提供身体为中心的空间参考。单指探索条件再次未能显示对称效应。实验4复制的促进作用的对称性开放的对称形状在触觉探索的两个（以前对齐）食指。封闭的形状再次显示没有效果。空间参考信息，手指运动，形状感知的刺激因素进行了讨论。
Four experiments tested the hypothesis that bilateral symmetry is an incidental encoding property in vision, but can also be elicited as an incidental effect in touch, provided that sufficient spatial reference information is available initially for haptic inputs to be organized spatially. Experiment 1 showed that symmetry facilitated processing in vision, even though the task required judgments of stimulus closure rather than the detection of symmetry. The same task and stimuli failed to show symmetry effects in tactual scanning by one finger (Experiment 2), Experiment 3 found facilitating effects for vertically symmetric open stimuli, although not for closed patterns, in two-forefinger exploration when the fore fingers had previously been aligned to the body midaxis to provide body-centered spatial reference. The one-finger exploration condition again failed to show symmetry effects. Experiment 4 replicated the facilitating effects of symmetry for open symmetric shapes in tactual exploration by the two (previously aligned) forefingers. Closed shapes again showed no effect. Spatial-reference information, finger movements, and stimulus factors in shape perception by touch are discussed.