The Ponzo illusion affects grip-force but not grip-aperture scaling during prehension movements

被引:109
作者
Jackson, SR [1 ]
Shaw, A [1 ]
机构
[1] Univ Wales, Sch Psychol, Ctr Percept Attent & Motor Sci, Bangor, Gwynedd, Wales
关键词
D O I
10.1037/0096-1523.26.1.418
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Contextual cues such as linear perspective and relative size can exert a powerful effect on the perception of objects. This fact is demonstrated by the illusory effects that can be induced by such cues (e.g., the Ponzo railway track and Titchener circles illusions). Several recent studies have reported, however, that visual illusions based on such cues have little or no influence on the visuomotor mechanisms used to guide hand action. Furthermore, evidence of this sort has been cited in support of a distinction between visual perception and the visual control of action. In the current study, the authors investigated the effect of the Ponzo visual illusion on the control of hand action, specifically, the scaling of grip force and grip aperture during prehension movements. The results demonstrate that grip force scaling is significantly influenced by the Ponzo visual illusion, whereas the scaling of grip aperture is unaffected by the illusion.
引用
收藏
页码:418 / 423
页数:6
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