Distortions in definite distance and shape perception as measured by reaching without and with haptic feedback.
Identifieur interne : 000129 ( Ncbi/Curation ); précédent : 000128; suivant : 000130Distortions in definite distance and shape perception as measured by reaching without and with haptic feedback.
Auteurs : G P Bingham [États-Unis] ; F. Zaal ; D. Robin ; J A ShullSource :
- Journal of experimental psychology. Human perception and performance [ 0096-1523 ] ; 2000.
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Abstract
Psychophysical studies reveal distortions in perception of distance and shape. Are reaches calibrated to eliminate distortions? Participants reached to the front, side, or back of a target sphere. In Experiment 1, feedforward reaches yielded distortion and outward drift. In Experiment 2, haptic feedback corrected distortions and instability. In Experiment 3, feedforward reaches with only haptic experience of targets replicated the shape distortions but drifted inward. This showed that outward drift in Experiment 1 was visually driven. In Experiment 4, visually guided reaches were accurate when participants used binocular vision but when they used monocular vision, reaches were distorted. Haptic feedback corrected inaccuracy and instability of distance but did not correct monocular shape distortions. Dynamic binocular vision is representative and accurate and merits further study.
PubMed: 10946724
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