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Curvature affects haptic length perception

Identifieur interne : 005250 ( Main/Exploration ); précédent : 005249; suivant : 005251

Curvature affects haptic length perception

Auteurs : Abram F. J. Sanders [Pays-Bas] ; Astrid M. L. Kappers [Pays-Bas]

Source :

Acta psychologica [ 0001-6918 ] ; 2008.

RBID : Pascal:09-0026255

Descripteurs français

Pascal (Inist)
- Courbure, Sensibilité tactile, Longueur, Perception espace, Etude expérimentale, Mouvement corporel, Membre supérieur, Bras, Illusion perceptive, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Arm, Body movement, Curvature, Experimental study, Human, Length, Perceptual illusion, Space perception, Tactile sensitivity, Upper limb.

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.

Affiliations:

Links toward previous steps (curation, corpus...)

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to stream PascalFrancis, to step Corpus: 000885
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Le document en format XML

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<front><div type="abstract" xml:lang="en">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.</div>
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Curvature affects haptic length perception

Curvature affects haptic length perception

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri