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A kinematic cue for active haptic shape perception.

Identifieur interne : 001321 ( PubMed/Curation ); précédent : 001320; suivant : 001322

A kinematic cue for active haptic shape perception.

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

Source :

Brain research [ 1872-6240 ] ; 2009.

RBID : pubmed:19268436

English descriptors

KwdEn :
- Adult, Analysis of Variance, Biomechanical Phenomena, Cues, Female, Fingers, Humans, Male, Physical Stimulation, Psychometrics, Psychomotor Performance, Psychophysics, Regression Analysis, Rotation, Stereognosis, Young Adult.
MESH :
- Adult, Analysis of Variance, Biomechanical Phenomena, Cues, Female, Fingers, Humans, Male, Physical Stimulation, Psychometrics, Psychomotor Performance, Psychophysics, Regression Analysis, Rotation, Stereognosis, Young Adult.

Abstract

This study quantitatively investigates the actual movements that observers make when exploring a shape. It addresses the question of how the kinematics of these movements relate to and may affect perceived shape. It is one of the first studies to do so for real stimuli and for relatively unconstrained exploration. Observers discriminated the curvature of circularly shaped strips. We identify a kinematic cue for a single finger stroking across circular strips under conditions of slip. This cue consists of two terms that are related to the shift of the skin contact surface across the fingertip and the rotation angle of the finger. The rotation angle of the finger is found to increase linearly with the curvature of the stimulus. Observers rotated their finger less on a concave curvature by a constant amount, while at the same time they overestimated the radius of the concave strips compared to the convex ones. We show that responses were related to kinematic properties of the actual movements and we consider several mechanisms that could explain this finding.

DOI: 10.1016/j.brainres.2009.02.038
PubMed: 19268436

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Le document en format XML

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<front><div type="abstract" xml:lang="en">This study quantitatively investigates the actual movements that observers make when exploring a shape. It addresses the question of how the kinematics of these movements relate to and may affect perceived shape. It is one of the first studies to do so for real stimuli and for relatively unconstrained exploration. Observers discriminated the curvature of circularly shaped strips. We identify a kinematic cue for a single finger stroking across circular strips under conditions of slip. This cue consists of two terms that are related to the shift of the skin contact surface across the fingertip and the rotation angle of the finger. The rotation angle of the finger is found to increase linearly with the curvature of the stimulus. Observers rotated their finger less on a concave curvature by a constant amount, while at the same time they overestimated the radius of the concave strips compared to the convex ones. We show that responses were related to kinematic properties of the actual movements and we consider several mechanisms that could explain this finding.</div>
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A kinematic cue for active haptic shape perception.

A kinematic cue for active haptic shape perception.

Source :

English descriptors

Abstract

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

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki