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Object Familiarity Modulates the Relationship Between Visual Object Imagery and Haptic Shape Perception

Identifieur interne : 004208 ( Main/Merge ); précédent : 004207; suivant : 004209

Object Familiarity Modulates the Relationship Between Visual Object Imagery and Haptic Shape Perception

Auteurs : Simon Lacey [États-Unis] ; Peter Flueckiger [États-Unis] ; Randall Stilla [États-Unis] ; Michael Lava [États-Unis] ; K. Sathian [États-Unis]

Source :

NeuroImage [ 1053-8119 ] ; 2009.

RBID : PMC:3073774

English descriptors

KwdEn :
- Adolescent, Adult, Brain Mapping, Female, Form Perception (physiology), Humans, Image Interpretation, Computer-Assisted, Imagination (physiology), Magnetic Resonance Imaging, Male, Recognition (Psychology) (physiology), Somatosensory Cortex (physiology), Young Adult.
MESH :
- physiology : Form Perception, Imagination, Recognition (Psychology), Somatosensory Cortex.
- Adolescent, Adult, Brain Mapping, Female, Humans, Image Interpretation, Computer-Assisted, Magnetic Resonance Imaging, Male, Young Adult.

Abstract

Although visual cortical engagement in haptic shape perception is well established, its relationship with visual imagery remains controversial. We addressed this using functional magnetic resonance imaging during separate visual object imagery and haptic shape perception tasks. Two experiments were conducted. In the first experiment, the haptic shape task employed unfamiliar, meaningless objects, whereas familiar objects were used in the second experiment. The activations evoked by visual object imagery overlapped more extensively, and their magnitudes were more correlated, with those evoked during haptic shape perception of familiar, compared to unfamiliar, objects. In the companion paper (Deshpande et al., 2009), we used task-specific functional and effective connectivity analyses to provide convergent evidence: these analyses showed that the neural networks underlying visual imagery were similar to those underlying haptic shape perception of familiar, but not unfamiliar, objects. We conclude that visual object imagery is more closely linked to haptic shape perception when objects are familiar, compared to when they are unfamiliar.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3073774

DOI: 10.1016/j.neuroimage.2009.10.081
PubMed: 19896540
PubMed Central: 3073774

Links to Exploration step

PMC:3073774

Le document en format XML

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<front><div type="abstract" xml:lang="en"><p id="P1">Although visual cortical engagement in haptic shape perception is well established, its relationship with visual imagery remains controversial. We addressed this using functional magnetic resonance imaging during separate visual object imagery and haptic shape perception tasks. Two experiments were conducted. In the first experiment, the haptic shape task employed unfamiliar, meaningless objects, whereas familiar objects were used in the second experiment. The activations evoked by visual object imagery overlapped more extensively, and their magnitudes were more correlated, with those evoked during haptic shape perception of familiar, compared to unfamiliar, objects. In the companion paper (<xref ref-type="bibr" rid="R12">Deshpande et al., 2009</xref>
), we used task-specific functional and effective connectivity analyses to provide convergent evidence: these analyses showed that the neural networks underlying visual imagery were similar to those underlying haptic shape perception of familiar, but not unfamiliar, objects. We conclude that visual object imagery is more closely linked to haptic shape perception when objects are familiar, compared to when they are unfamiliar.</p>
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Serveur d'exploration sur les dispositifs haptiques

Object Familiarity Modulates the Relationship Between Visual Object Imagery and Haptic Shape Perception

Object Familiarity Modulates the Relationship Between Visual Object Imagery and 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

	Serveur d'exploration sur les dispositifs haptiques
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