HapticV1, PubMed, Corpus, bibRecord, 001A55

Multisensory cortical processing of object shape and its relation to mental imagery.

Identifieur interne : 001A55 ( PubMed/Corpus ); précédent : 001A54; suivant : 001A56

Multisensory cortical processing of object shape and its relation to mental imagery.

Auteurs : Minming Zhang ; Valerie D. Weisser ; Randall Stilla ; S C Prather ; K. Sathian

Source :

Cognitive, affective & behavioral neuroscience [ 1530-7026 ] ; 2004.

RBID : pubmed:15460931

English descriptors

KwdEn :
- Adult, Cerebral Cortex (anatomy & histology), Female, Form Perception, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Surveys and Questionnaires, Touch, Visual Cortex (physiology), Visual Perception.
MESH :
- anatomy & histology : Cerebral Cortex.
- physiology : Visual Cortex.
- Adult, Female, Form Perception, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Surveys and Questionnaires, Touch, Visual Perception.

Abstract

Here, we used functional magnetic resonance imaging to investigate the multisensory processing of object shape in the human cerebral cortex and explored the role of mental imagery in such processing. Regions active bilaterally during both visual and haptic shape perception, relative to texture perception in the respective modality, included parts of the superior parietal gyrus, the anterior intraparietal sulcus, and the lateral occipital complex. Of these bimodal regions, the lateral occipital complexes preferred visual over haptic stimuli, whereas the parietal areas preferred haptic over visual stimuli. Whereas most subjects reported little haptic imagery during visual shape perception, experiences of visual imagery during haptic shape perception were common. Across subjects, ratings of the vividness of visual imagery strongly predicted the amount of haptic shape-selective activity in the right, but not in the left, lateral occipital complex. Thus, visual imagery appears to contribute to activation of some, but not all, visual cortical areas during haptic perception.

PubMed: 15460931

Links to Exploration step

pubmed:15460931

Le document en format XML

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<author><name sortKey="Zhang, Minming" sort="Zhang, Minming" uniqKey="Zhang M" first="Minming" last="Zhang">Minming Zhang</name>
<affiliation><nlm:affiliation>Department of Neurology, Emory University School of Medicine, Atlanta, Georgia 30322, USA.</nlm:affiliation>
</affiliation>
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<author><name sortKey="Weisser, Valerie D" sort="Weisser, Valerie D" uniqKey="Weisser V" first="Valerie D" last="Weisser">Valerie D. Weisser</name>
</author>
<author><name sortKey="Stilla, Randall" sort="Stilla, Randall" uniqKey="Stilla R" first="Randall" last="Stilla">Randall Stilla</name>
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<author><name sortKey="Prather, S C" sort="Prather, S C" uniqKey="Prather S" first="S C" last="Prather">S C Prather</name>
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<author><name sortKey="Sathian, K" sort="Sathian, K" uniqKey="Sathian K" first="K" last="Sathian">K. Sathian</name>
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<term>Image Processing, Computer-Assisted</term>
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<front><div type="abstract" xml:lang="en">Here, we used functional magnetic resonance imaging to investigate the multisensory processing of object shape in the human cerebral cortex and explored the role of mental imagery in such processing. Regions active bilaterally during both visual and haptic shape perception, relative to texture perception in the respective modality, included parts of the superior parietal gyrus, the anterior intraparietal sulcus, and the lateral occipital complex. Of these bimodal regions, the lateral occipital complexes preferred visual over haptic stimuli, whereas the parietal areas preferred haptic over visual stimuli. Whereas most subjects reported little haptic imagery during visual shape perception, experiences of visual imagery during haptic shape perception were common. Across subjects, ratings of the vividness of visual imagery strongly predicted the amount of haptic shape-selective activity in the right, but not in the left, lateral occipital complex. Thus, visual imagery appears to contribute to activation of some, but not all, visual cortical areas during haptic perception.</div>
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<Title>Cognitive, affective & behavioral neuroscience</Title>
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<Abstract><AbstractText>Here, we used functional magnetic resonance imaging to investigate the multisensory processing of object shape in the human cerebral cortex and explored the role of mental imagery in such processing. Regions active bilaterally during both visual and haptic shape perception, relative to texture perception in the respective modality, included parts of the superior parietal gyrus, the anterior intraparietal sulcus, and the lateral occipital complex. Of these bimodal regions, the lateral occipital complexes preferred visual over haptic stimuli, whereas the parietal areas preferred haptic over visual stimuli. Whereas most subjects reported little haptic imagery during visual shape perception, experiences of visual imagery during haptic shape perception were common. Across subjects, ratings of the vividness of visual imagery strongly predicted the amount of haptic shape-selective activity in the right, but not in the left, lateral occipital complex. Thus, visual imagery appears to contribute to activation of some, but not all, visual cortical areas during haptic perception.</AbstractText>
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Multisensory cortical processing of object shape and its relation to mental imagery.

Multisensory cortical processing of object shape and its relation to mental imagery.

Source :

English descriptors

Abstract

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