Curvature affects haptic length perception
Identifieur interne : 000743 ( PascalFrancis/Checkpoint ); précédent : 000742; suivant : 000744Curvature affects haptic length perception
Auteurs : Abram F. J. Sanders [Pays-Bas] ; Astrid M. L. Kappers [Pays-Bas]Source :
- Acta psychologica [ 0001-6918 ] ; 2008.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
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Abstract
One possible way of haptically perceiving length is to trace a path with one's index finger and estimate the distance traversed. Here, we present an experiment in which observers judge the lengths of paths across cylindrically curved surfaces. We found that convex and concave surfaces had qualitatively different effects: convex lengths were overestimated, whereas concave lengths were underestimated. In addition, we observed that the index finger moved more slowly across the convex surface than across the concave one. As a result, movement times for convex lengths were longer. The considerable correlation between movement times and length estimates suggests that observers take the duration of movement as their primary measure of perceived length, but disregard movement speeds. Several mechanisms that could underlie observers' failure to account for speed differences are considered.
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The Physics of Man, Helmholtz Institute, Utrecht University, P.O. 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Here, we present an experiment in which observers judge the lengths of paths across cylindrically curved surfaces. We found that convex and concave surfaces had qualitatively different effects: convex lengths were overestimated, whereas concave lengths were underestimated. In addition, we observed that the index finger moved more slowly across the convex surface than across the concave one. As a result, movement times for convex lengths were longer. The considerable correlation between movement times and length estimates suggests that observers take the duration of movement as their primary measure of perceived length, but disregard movement speeds. 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J." last="Sanders">Abram F. J. Sanders</name></region><name sortKey="Kappers, Astrid M L" sort="Kappers, Astrid M L" uniqKey="Kappers A" first="Astrid M. L." last="Kappers">Astrid M. L. Kappers</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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