HapticV1, Main, Exploration, bibRecord, 007427

Active haptic detection and discrimination of shape

Identifieur interne : 007427 ( Main/Exploration ); précédent : 007426; suivant : 007428

Active haptic detection and discrimination of shape

Auteurs : S. Louw [Pays-Bas] ; A. M. L. Kappers [Pays-Bas] ; J. J. Koenderink [Pays-Bas]

Source :

Perception & psychophysics [ 0031-5117 ] ; 2002.

RBID : Pascal:03-0026442

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Sensibilité tactile, Discrimination stimulus, Seuil détection, Forme stimulus, Fonction psychométrique, Seuil différentiel, Psychophysique, Perception, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Detection threshold, Differential threshold, Discrimination (Psychology), Experimental study, Female, Form Perception, Human, Humans, Male, Models, Statistical, Perception, Psychometric function, Psychophysics, Random Allocation, Sensory Thresholds (physiology), Signal Detection, Psychological, Stimulus discrimination, Stimulus shape, Tactile sensitivity, Visual Perception.
MESH :
- physiology : Sensory Thresholds.
- Discrimination (Psychology), Female, Form Perception, Humans, Male, Models, Statistical, Random Allocation, Signal Detection, Psychological, Visual Perception.

Abstract

In previous research, we have shown that detection thresholds for Gaussian shapes increase with a power of 1.3 of spatial width. In the present three experiments, we generalized this finding to more complex shapes and to discrimination tasks. In Experiment 1, we found that the slope of the psychometric function for detection (i.e., distinguishing curved from flat surfaces) was independent of surface shape. In Experiment 3, we found the same result for discrimination of two different curved shapes. In Experiment 2, we found that detection and discrimination functions had the same dependence on spatial width, except that discrimination thresholds were two to four times larger. Possible neural mechanisms underlying these results are discussed.

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">In previous research, we have shown that detection thresholds for Gaussian shapes increase with a power of 1.3 of spatial width. In the present three experiments, we generalized this finding to more complex shapes and to discrimination tasks. In Experiment 1, we found that the slope of the psychometric function for detection (i.e., distinguishing curved from flat surfaces) was independent of surface shape. In Experiment 3, we found the same result for discrimination of two different curved shapes. In Experiment 2, we found that detection and discrimination functions had the same dependence on spatial width, except that discrimination thresholds were two to four times larger. Possible neural mechanisms underlying these results are discussed.</div>
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Serveur d'exploration sur les dispositifs haptiques

Active haptic detection and discrimination of shape

Active haptic detection and discrimination of shape

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

	Serveur d'exploration sur les dispositifs haptiques
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