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A PUTATIVE MODEL OF MULTISENSORY OBJECT REPRESENTATION

Identifieur interne : 004400 ( Main/Merge ); précédent : 004399; suivant : 004401

A PUTATIVE MODEL OF MULTISENSORY OBJECT REPRESENTATION

Auteurs : Simon Lacey [États-Unis] ; Noa Tal [Israël] ; Amir Amedi [Israël] ; K. Sathian [États-Unis]

Source :

Brain topography [ 0896-0267 ] ; 2009.

RBID : PMC:3156680

English descriptors

KwdEn :
- Humans, Imagination (physiology), Models, Neurological, Nerve Net (anatomy & histology), Nerve Net (physiology), Neural Pathways (anatomy & histology), Neural Pathways (physiology), Occipital Lobe (anatomy & histology), Occipital Lobe (physiology), Pattern Recognition, Visual (physiology), Space Perception (physiology), Touch Perception (physiology), Visual Perception (physiology).
MESH :
- anatomy & histology : Nerve Net, Neural Pathways, Occipital Lobe.
- physiology : Imagination, Nerve Net, Neural Pathways, Occipital Lobe, Pattern Recognition, Visual, Space Perception, Touch Perception, Visual Perception.
- Humans, Models, Neurological.

Abstract

This review surveys the recent literature on visuo-haptic convergence in the perception of object form, with particular reference to the lateral occipital complex (LOC) and the intraparietal sulcus (IPS) and discusses how visual imagery or multisensory representations might underlie this convergence. Drawing on a recent distinction between object- and spatially-based visual imagery, we propose a putative model in which LOtv, a subregion of LOC, contains a modality-independent representation of geometric shape that can be accessed either bottom-up from direct sensory inputs or top-down from frontoparietal regions. We suggest that such access is modulated by object familiarity: spatial imagery may be more important for unfamiliar objects and involve IPS foci in facilitating somatosensory inputs to the LOC; by contrast, object imagery may be more critical for familiar objects, being reflected in prefrontal drive to the LOC.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3156680

DOI: 10.1007/s10548-009-0087-4
PubMed: 19330441
PubMed Central: 3156680

Links to Exploration step

PMC:3156680

Le document en format XML

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<term>Occipital Lobe (physiology)</term>
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<term>Space Perception (physiology)</term>
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<front><div type="abstract" xml:lang="en"><p id="P1">This review surveys the recent literature on visuo-haptic convergence in the perception of object form, with particular reference to the lateral occipital complex (LOC) and the intraparietal sulcus (IPS) and discusses how visual imagery or multisensory representations might underlie this convergence. Drawing on a recent distinction between object- and spatially-based visual imagery, we propose a putative model in which LOtv, a subregion of LOC, contains a modality-independent representation of geometric shape that can be accessed either bottom-up from direct sensory inputs or top-down from frontoparietal regions. We suggest that such access is modulated by object familiarity: spatial imagery may be more important for unfamiliar objects and involve IPS foci in facilitating somatosensory inputs to the LOC; by contrast, object imagery may be more critical for familiar objects, being reflected in prefrontal drive to the LOC.</p>
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Serveur d'exploration sur les dispositifs haptiques

A PUTATIVE MODEL OF MULTISENSORY OBJECT REPRESENTATION

A PUTATIVE MODEL OF MULTISENSORY OBJECT REPRESENTATION

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

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