Seeing Touch Is Correlated with Content-Specific Activity in Primary Somatosensory Cortex
Identifieur interne : 001991 ( Pmc/Checkpoint ); précédent : 001990; suivant : 001992Seeing Touch Is Correlated with Content-Specific Activity in Primary Somatosensory Cortex
Auteurs : Kaspar Meyer ; Jonas T. Kaplan ; Ryan Essex ; Hanna Damasio ; Antonio DamasioSource :
- Cerebral Cortex (New York, NY) [ 1047-3211 ] ; 2011.
Abstract
There is increasing evidence to suggest that primary sensory cortices can become active in the absence of external stimulation in their respective modalities. This occurs, for example, when stimuli processed via one sensory modality imply features characteristic of a different modality; for instance, visual stimuli that imply touch have been observed to activate the primary somatosensory cortex (SI). In the present study, we addressed the question of whether such cross-modal activations are content specific. To this end, we investigated neural activity in the primary somatosensory cortex of subjects who observed human hands engaged in the haptic exploration of different everyday objects. Using multivariate pattern analysis of functional magnetic resonance imaging data, we were able to predict, based exclusively on the activity pattern in SI, which of several objects a subject saw being explored. Along with previous studies that found similar evidence for other modalities, our results suggest that primary sensory cortices represent information relevant for their modality even when this information enters the brain via a different sensory system.
Url:
DOI: 10.1093/cercor/bhq289
PubMed: 21330469
PubMed Central: 3155604
Affiliations:
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<front><journal-meta><journal-id journal-id-type="nlm-ta">Cereb Cortex</journal-id><journal-id journal-id-type="hwp">cercor</journal-id><journal-id journal-id-type="publisher-id">cercor</journal-id><journal-title-group><journal-title>Cerebral Cortex (New York, NY)</journal-title></journal-title-group><issn pub-type="ppub">1047-3211</issn><issn pub-type="epub">1460-2199</issn><publisher><publisher-name>Oxford University Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">21330469</article-id><article-id pub-id-type="pmc">3155604</article-id><article-id pub-id-type="doi">10.1093/cercor/bhq289</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group><series-title>Editor's Choice</series-title></article-categories><title-group><article-title>Seeing Touch Is Correlated with Content-Specific Activity in Primary Somatosensory Cortex</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Meyer</surname><given-names>Kaspar</given-names></name></contrib><contrib contrib-type="author"><name><surname>Kaplan</surname><given-names>Jonas T.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Essex</surname><given-names>Ryan</given-names></name></contrib><contrib contrib-type="author"><name><surname>Damasio</surname><given-names>Hanna</given-names></name></contrib><contrib contrib-type="author"><name><surname>Damasio</surname><given-names>Antonio</given-names></name></contrib></contrib-group><aff>Brain and Creativity Institute, University of Southern California, 3641 Watt Way, Suite 126, Los Angeles, CA 90089-2520, USA</aff><author-notes><corresp>Address correspondence to Dr Kaspar Meyer. Email: <email>kaspar.meyer@usc.edu</email>.</corresp></author-notes><pub-date pub-type="ppub"><month>9</month><year>2011</year></pub-date><pub-date pub-type="epub"><day>17</day><month>2</month><year>2011</year></pub-date><pub-date pub-type="pmc-release"><day>1</day><month>9</month><year>2012</year></pub-date><pmc-comment> PMC Release delay is 12 months and 0 days and was based on the
<volume>21</volume><issue>9</issue><fpage>2113</fpage><lpage>2121</lpage><permissions><copyright-statement>© The Author 2011. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com</copyright-statement><copyright-year>2011</copyright-year></permissions><abstract><p>There is increasing evidence to suggest that primary sensory cortices can become active in the absence of external stimulation in their respective modalities. This occurs, for example, when stimuli processed via one sensory modality imply features characteristic of a different modality; for instance, visual stimuli that imply touch have been observed to activate the primary somatosensory cortex (SI). In the present study, we addressed the question of whether such cross-modal activations are content specific. To this end, we investigated neural activity in the primary somatosensory cortex of subjects who observed human hands engaged in the haptic exploration of different everyday objects. Using multivariate pattern analysis of functional magnetic resonance imaging data, we were able to predict, based exclusively on the activity pattern in SI, which of several objects a subject saw being explored. Along with previous studies that found similar evidence for other modalities, our results suggest that primary sensory cortices represent information relevant for their modality even when this information enters the brain via a different sensory system.</p></abstract><kwd-group><kwd>cross-modal processing</kwd><kwd>functional neuroimaging</kwd><kwd>multivariate pattern analysis</kwd><kwd>sensory systems</kwd></kwd-group></article-meta></front></pmc><affiliations><list></list><tree><noCountry><name sortKey="Damasio, Antonio" sort="Damasio, Antonio" uniqKey="Damasio A" first="Antonio" last="Damasio">Antonio Damasio</name><name sortKey="Damasio, Hanna" sort="Damasio, Hanna" uniqKey="Damasio H" first="Hanna" last="Damasio">Hanna Damasio</name><name sortKey="Essex, Ryan" sort="Essex, Ryan" uniqKey="Essex R" first="Ryan" last="Essex">Ryan Essex</name><name sortKey="Kaplan, Jonas T" sort="Kaplan, Jonas T" uniqKey="Kaplan J" first="Jonas T." last="Kaplan">Jonas T. Kaplan</name><name sortKey="Meyer, Kaspar" sort="Meyer, Kaspar" uniqKey="Meyer K" first="Kaspar" last="Meyer">Kaspar Meyer</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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