The way of touch: the important factor for visual adjustment of haptic size judgements

Kensuke Oshima, Shigeru Ichihara
Poster
Time: 2009-07-02  09:00 AM – 10:30 AM
Last modified: 2009-06-04

Abstract


Lederman & Klatky (1987) showed that people selected the way of touch properly for the task. So the way of touch is important for knowing the environments. But previous studies of interaction between vision and touch hardly regarded the way of touch. We think the way of touch is one of the important factors for the interaction between vision and touch. We examined visual adjustement of haptic size judgements and compared different ways of touch. Participants were in an experimentally created intersensory size conflict between vision and touch. In experimental conditions the participant's task was haptic size judgements of the squares with their three fingers when they simultaneously "grasped" or "grasped and traced" and looked the squares. When participants were looking smaller square than physical size of the square, in experimental conditions they selected smaller square than haptic control condition. Visual adjustment of haptic size judgements were comfirmed. In “grasp� condition visual adjustment of touch was greater than “grasp and trace� condition. We suggest that the way of touch affects visual adjustments of touch and is the considerable factor for interaction between vision and touch.

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