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Multisensory integration in the Müller-Lyer illusion: From vision to haptics

Identifieur interne : 003F41 ( Main/Merge ); précédent : 003F40; suivant : 003F42

Multisensory integration in the Müller-Lyer illusion: From vision to haptics

Auteurs : Flavia Mancini [Italie] ; Emanuela Bricolo [Italie] ; Giuseppe Vallar [Italie]

Source :

The Quarterly journal of experimental psychology : (2006. Print) [ 1747-0218 ] ; 2010.

RBID : Pascal:10-0197551

Descripteurs français

Pascal (Inist)
- Perception intermodale, Intégration information, Intégration multisensorielle, Illusion Müller Lyer, Vision, Sensibilité tactile, Etude expérimentale, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Experimental study, Human, Information integration, Intermodal perception, Muller Lyer illusion, Multisensory integration, Tactile sensitivity, Vision.

Abstract

The Müller- Lyer figure is a powerful illusion in both vision and touch, although it is still unclear whether the visual and haptic illusory effects are due to modality-specific or shared processes. In order to investigate the hypothesis of a common underlying mechanism, the performance of 24 undergraduates in a manual bisection task of the Judd variant of the Müller- Lyer figure was assessed under visual, haptic, and visuo-haptic presentations (Experiment 1). In the bimodal condition participants saw the arrowheads on the front and touched the shaft on the back of a stimulus-supporting board. Illusory effects were comparable in touch and vision and were present, albeit reduced, in the bimodal visuo-haptic condition. In Experiment 2 we used the bimodal task of Experiment 1, manipulating the spatial position of the horizontal shaft on the backside of the board. The visual arrowheads affected haptic bisection, bringing about the illusory effects, only when the shaft was aligned with them. In conclusion, illusory effects transfer cross-modally from vision to haptics only in the presence of spatial coincidence, which appears to be a crucial factor for cross-modal integration. Implications for multisensory processes are discussed.

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Pascal:10-0197551

Le document en format XML

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<front><div type="abstract" xml:lang="en">The Müller- Lyer figure is a powerful illusion in both vision and touch, although it is still unclear whether the visual and haptic illusory effects are due to modality-specific or shared processes. In order to investigate the hypothesis of a common underlying mechanism, the performance of 24 undergraduates in a manual bisection task of the Judd variant of the Müller- Lyer figure was assessed under visual, haptic, and visuo-haptic presentations (Experiment 1). In the bimodal condition participants saw the arrowheads on the front and touched the shaft on the back of a stimulus-supporting board. Illusory effects were comparable in touch and vision and were present, albeit reduced, in the bimodal visuo-haptic condition. In Experiment 2 we used the bimodal task of Experiment 1, manipulating the spatial position of the horizontal shaft on the backside of the board. The visual arrowheads affected haptic bisection, bringing about the illusory effects, only when the shaft was aligned with them. In conclusion, illusory effects transfer cross-modally from vision to haptics only in the presence of spatial coincidence, which appears to be a crucial factor for cross-modal integration. Implications for multisensory processes are discussed.</div>
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Multisensory integration in the Müller-Lyer illusion: From vision to haptics

Multisensory integration in the Müller-Lyer illusion: From vision to haptics

Source :

Descripteurs français

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