Multisensory Integration of Sounds and Vibrotactile Stimuli in Processing Streams for “What” and “Where”
Identifieur interne : 004221 ( Main/Merge ); précédent : 004220; suivant : 004222Multisensory Integration of Sounds and Vibrotactile Stimuli in Processing Streams for “What” and “Where”
Auteurs : Laurent A. Renier [États-Unis, Belgique] ; Irina Anurova [États-Unis, Finlande] ; Anne G. De Volder [Belgique] ; Synnöve Carlson [Finlande] ; John Vanmeter [États-Unis] ; Josef P. Rauschecker [États-Unis]Source :
- The Journal of Neuroscience [ 0270-6474 ] ; 2009.
Abstract
The segregation between cortical pathways for the identification and localization of objects is thought of as a general organizational principle in the brain. Yet, little is known about the unimodal versus multimodal nature of these processing streams. The main purpose of the present study was to test whether the auditory and tactile dual pathways converged into specialized multisensory brain areas. We used functional magnetic resonance imaging (fMRI) to compare directly in the same subjects the brain activation related to localization and identification of comparable auditory and vibrotactile stimuli. Results indicate that the right inferior frontal gyrus (IFG) and both left and right insula were more activated during identification conditions than during localization in both touch and audition. The reverse dissociation was found for the left and right inferior parietal lobules (IPL), the left superior parietal lobule (SPL) and the right precuneus-SPL, which were all more activated during localization conditions in the two modalities. We propose that specialized areas in the right IFG and the left and right insula are multisensory operators for the processing of stimulus identity whereas parts of the left and right IPL and SPL are specialized for the processing of spatial attributes independently of sensory modality.
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DOI: 10.1523/JNEUROSCI.0910-09.2009
PubMed: 19726653
PubMed Central: 3343457
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Renier</name><affiliation wicri:level="2"><nlm:aff id="A1">Department of Physiology and Biophysics, Laboratory for Integrative Neuroscience and Cognition, Georgetown University Medical Center, Washington, DC 20007</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">District de Columbia</region></placeName><wicri:cityArea>Department of Physiology and Biophysics, Laboratory for Integrative Neuroscience and Cognition, Georgetown University Medical Center, Washington</wicri:cityArea></affiliation><affiliation wicri:level="4"><nlm:aff id="A2">Neural Rehabilitation Engineering Laboratory, Université Catholique de Louvain, 54, UCL-54.46, B-1200 Brussels, Belgium</nlm:aff><country xml:lang="fr">Belgique</country><wicri:regionArea>Neural Rehabilitation Engineering Laboratory, Université Catholique de Louvain, 54, UCL-54.46, B-1200 Brussels</wicri:regionArea><orgName type="university">Université catholique de Louvain</orgName><placeName><settlement type="city">Louvain-la-Neuve</settlement><region type="region" nuts="1">Région wallonne</region><region type="province" nuts="1">Province du Brabant wallon</region></placeName></affiliation></author><author><name sortKey="Anurova, Irina" sort="Anurova, Irina" uniqKey="Anurova I" first="Irina" last="Anurova">Irina Anurova</name><affiliation wicri:level="2"><nlm:aff id="A1">Department of Physiology and Biophysics, Laboratory for Integrative Neuroscience and Cognition, Georgetown University Medical Center, Washington, DC 20007</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">District de Columbia</region></placeName><wicri:cityArea>Department of Physiology and Biophysics, Laboratory for Integrative Neuroscience and Cognition, Georgetown University Medical Center, Washington</wicri:cityArea></affiliation><affiliation wicri:level="4"><nlm:aff id="A3">Neuroscience Unit, Institute of Biomedicine/Physiology, University of Helsinki, 00290 Helsinki, Finland</nlm:aff><country xml:lang="fr">Finlande</country><wicri:regionArea>Neuroscience Unit, Institute of Biomedicine/Physiology, University of Helsinki, 00290 Helsinki</wicri:regionArea><orgName type="university">Université d'Helsinki</orgName><placeName><settlement type="city">Helsinki</settlement><region type="région" nuts="2">Uusimaa</region></placeName></affiliation></author><author><name sortKey="De Volder, Anne G" sort="De Volder, Anne G" uniqKey="De Volder A" first="Anne G." last="De Volder">Anne G. De Volder</name><affiliation wicri:level="4"><nlm:aff id="A2">Neural Rehabilitation Engineering Laboratory, Université Catholique de Louvain, 54, UCL-54.46, B-1200 Brussels, Belgium</nlm:aff><country xml:lang="fr">Belgique</country><wicri:regionArea>Neural Rehabilitation Engineering Laboratory, Université Catholique de Louvain, 54, UCL-54.46, B-1200 Brussels</wicri:regionArea><orgName type="university">Université catholique de Louvain</orgName><placeName><settlement type="city">Louvain-la-Neuve</settlement><region type="region" nuts="1">Région wallonne</region><region type="province" nuts="1">Province du Brabant wallon</region></placeName></affiliation></author><author><name sortKey="Carlson, Synnove" sort="Carlson, Synnove" uniqKey="Carlson S" first="Synnöve" last="Carlson">Synnöve Carlson</name><affiliation wicri:level="4"><nlm:aff id="A3">Neuroscience Unit, Institute of Biomedicine/Physiology, University of Helsinki, 00290 Helsinki, Finland</nlm:aff><country xml:lang="fr">Finlande</country><wicri:regionArea>Neuroscience Unit, Institute of Biomedicine/Physiology, University of Helsinki, 00290 Helsinki</wicri:regionArea><orgName type="university">Université d'Helsinki</orgName><placeName><settlement type="city">Helsinki</settlement><region type="région" nuts="2">Uusimaa</region></placeName></affiliation><affiliation wicri:level="1"><nlm:aff id="A4">Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, 02015 TKK Espoo, Finland</nlm:aff><country xml:lang="fr">Finlande</country><wicri:regionArea>Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, 02015 TKK Espoo</wicri:regionArea><wicri:noRegion>02015 TKK Espoo</wicri:noRegion></affiliation><affiliation wicri:level="1"><nlm:aff id="A5">Medical School, University of Tampere, 33014 Tampere, Finland</nlm:aff><country xml:lang="fr">Finlande</country><wicri:regionArea>Medical School, University of Tampere, 33014 Tampere</wicri:regionArea><wicri:noRegion>33014 Tampere</wicri:noRegion></affiliation></author><author><name sortKey="Vanmeter, John" sort="Vanmeter, John" uniqKey="Vanmeter J" first="John" last="Vanmeter">John Vanmeter</name><affiliation wicri:level="2"><nlm:aff id="A6">Center for Functional and Molecular Imaging, Georgetown University Medical Center, Washington, DC 20057</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">District de Columbia</region></placeName><wicri:cityArea>Center for Functional and Molecular Imaging, Georgetown University Medical Center, Washington</wicri:cityArea></affiliation></author><author><name sortKey="Rauschecker, Josef P" sort="Rauschecker, Josef P" uniqKey="Rauschecker J" first="Josef P." last="Rauschecker">Josef P. Rauschecker</name><affiliation wicri:level="2"><nlm:aff id="A1">Department of Physiology and Biophysics, Laboratory for Integrative Neuroscience and Cognition, Georgetown University Medical Center, Washington, DC 20007</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">District de Columbia</region></placeName><wicri:cityArea>Department of Physiology and Biophysics, Laboratory for Integrative Neuroscience and Cognition, Georgetown University Medical Center, Washington</wicri:cityArea></affiliation></author></analytic><series><title level="j">The Journal of Neuroscience</title><idno type="ISSN">0270-6474</idno><idno type="eISSN">1529-2401</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="P1">The segregation between cortical pathways for the identification and localization of objects is thought of as a general organizational principle in the brain. Yet, little is known about the unimodal versus multimodal nature of these processing streams. The main purpose of the present study was to test whether the auditory and tactile dual pathways converged into specialized multisensory brain areas. We used functional magnetic resonance imaging (fMRI) to compare directly in the same subjects the brain activation related to localization and identification of comparable auditory and vibrotactile stimuli. Results indicate that the right inferior frontal gyrus (IFG) and both left and right insula were more activated during identification conditions than during localization in both touch and audition. The reverse dissociation was found for the left and right inferior parietal lobules (IPL), the left superior parietal lobule (SPL) and the right precuneus-SPL, which were all more activated during localization conditions in the two modalities. We propose that specialized areas in the right IFG and the left and right insula are multisensory operators for the processing of stimulus identity whereas parts of the left and right IPL and SPL are specialized for the processing of spatial attributes independently of sensory modality.</p></div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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