HapticV1, PascalFrancis, Curation, bibRecord, 000514

Visual and haptic discrimination of symmetry in unfamiliar displays extended in the z-axis

Identifieur interne : 000514 ( PascalFrancis/Curation ); précédent : 000513; suivant : 000515

Visual and haptic discrimination of symmetry in unfamiliar displays extended in the z-axis

Auteurs : Soledad Ballesteros [Espagne] ; José M. Reales [Espagne]

Source :

Perception : (London. Print) [ 0301-0066 ] ; 2004.

RBID : Pascal:04-0296117

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Vision, Sensibilité tactile, Tâche discrimination, Symétrie stimulus, Complexité stimulus, Perception espace, Espace 3 dimensions, Espace 2 dimensions, Familiarité stimulus, Perception, Cognition, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Cognition, Discrimination task, Experimental study, Human, Perception, Space perception, Stimulus complexity, Stimulus familiarity, Stimulus symmetry, Tactile sensitivity, Three dimensional space, Two dimensional space, Vision.

Abstract

We investigated, in two experiments, the discrimination of bilateral symmetry in vision and touch using four sets of unfamiliar displays. They varied in complexity from 3 to 30 turns. Two sets were 2-D flat forms (raised-line shapes and raised surfaces) while the other two were 3-D objects constructed by extending the 2-D shapes in height (short and tall objects). Experiment 1 showed that visual accuracy was excellent but latencies increased for raised-line shapes compared with 3-D objects. Experiment 2 showed that unimanual exploration was more accurate for asymmetric than for symmetric judgments, but only for 2-D shapes and short objects. Bimanual exploration at the body midline facilitated the discrimination of symmetric shapes without changing performance with asymmetric ones. Accuracy for haptically explored symmetric stimuli improved as the stimuli were extended in the third dimension, while no such a trend appeared for asymmetric stimuli. Unlike vision, haptic response latency decreased for 2-D shapes compared with 3-D objects. The present results are relevant to the understanding of symmetry discrimination in vision and touch.

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Le document en format XML

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Visual and haptic discrimination of symmetry in unfamiliar displays extended in the z-axis

Visual and haptic discrimination of symmetry in unfamiliar displays extended in the z-axis

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Descripteurs français

English descriptors

Abstract

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