Neural mechanisms of tactile motion integration in somatosensory cortex
Identifieur interne : 001025 ( Pmc/Curation ); précédent : 001024; suivant : 001026Neural mechanisms of tactile motion integration in somatosensory cortex
Auteurs : Y. C. Pei [États-Unis, Taïwan] ; S. S. Hsiao [États-Unis] ; J. C. Craig [États-Unis] ; S. J Bensmaia [États-Unis]Source :
- Neuron [ 0896-6273 ] ; 2011.
Abstract
How are local motion signals integrated to form a global motion percept? We investigate the neural mechanisms of tactile motion integration by presenting tactile gratings and plaids to the fingertips of monkeys, using the tactile analogue of a visual monitor, while recording the responses evoked in somatosensory cortical neurons. In parallel psychophysical experiments, we measure the perceived direction of the gratings and plaids. We identify a population of somatosensory neurons that exhibit integration properties comparable to those observed in area MT to analogous visual stimuli. We find that the responses of these neurons can account for the perceived direction of the stimuli across all stimulus conditions tested. We show that the preferred direction of the neurons and the perceived direction of the stimuli can be predicted from the weighted average of the directions of the individual stimulus features (edges and intersections).
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DOI: 10.1016/j.neuron.2010.12.033
PubMed: 21315263
PubMed Central: 3052381
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C." last="Pei">Y. C. Pei</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Neuroscience, Johns Hopkins University School of Medicine, 813 Wood Basic Science Building, 725 N. Wolfe St., MD, 21205, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Neuroscience, Johns Hopkins University School of Medicine, 813 Wood Basic Science Building, 725 N. Wolfe St., MD, 21205</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="A2">Krieger Mind/Brain Institute, Johns Hopkins University, Krieger 338, 3400 N. Charles St., MD, 21218, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Krieger Mind/Brain Institute, Johns Hopkins University, Krieger 338, 3400 N. 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J Bensmaia</name><affiliation wicri:level="1"><nlm:aff id="A1">Department of Neuroscience, Johns Hopkins University School of Medicine, 813 Wood Basic Science Building, 725 N. Wolfe St., MD, 21205, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Neuroscience, Johns Hopkins University School of Medicine, 813 Wood Basic Science Building, 725 N. Wolfe St., MD, 21205</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="A2">Krieger Mind/Brain Institute, Johns Hopkins University, Krieger 338, 3400 N. Charles St., MD, 21218, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Krieger Mind/Brain Institute, Johns Hopkins University, Krieger 338, 3400 N. 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We investigate the neural mechanisms of tactile motion integration by presenting tactile gratings and plaids to the fingertips of monkeys, using the tactile analogue of a visual monitor, while recording the responses evoked in somatosensory cortical neurons. In parallel psychophysical experiments, we measure the perceived direction of the gratings and plaids. We identify a population of somatosensory neurons that exhibit integration properties comparable to those observed in area MT to analogous visual stimuli. We find that the responses of these neurons can account for the perceived direction of the stimuli across all stimulus conditions tested. We show that the preferred direction of the neurons and the perceived direction of the stimuli can be predicted from the weighted average of the directions of the individual stimulus features (edges and intersections).</p></div></front></TEI><pmc article-type="research-article" xml:lang="EN"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<pmc-dir>properties manuscript</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-journal-id">8809320</journal-id><journal-id journal-id-type="pubmed-jr-id">1600</journal-id><journal-id journal-id-type="nlm-ta">Neuron</journal-id><journal-title>Neuron</journal-title><issn pub-type="ppub">0896-6273</issn><issn pub-type="epub">1097-4199</issn></journal-meta><article-meta><article-id pub-id-type="pmid">21315263</article-id><article-id pub-id-type="pmc">3052381</article-id><article-id pub-id-type="doi">10.1016/j.neuron.2010.12.033</article-id><article-id pub-id-type="manuscript">NIHMS263522</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Neural mechanisms of tactile motion integration in somatosensory cortex</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Pei</surname><given-names>Y.C.</given-names></name><xref ref-type="aff" rid="A1">1</xref><xref ref-type="aff" rid="A2">2</xref><xref ref-type="aff" rid="A3">3</xref></contrib><contrib contrib-type="author"><name><surname>Hsiao</surname><given-names>S.S.</given-names></name><xref ref-type="aff" rid="A1">1</xref><xref ref-type="aff" rid="A2">2</xref></contrib><contrib contrib-type="author"><name><surname>Craig</surname><given-names>J.C.</given-names></name><xref ref-type="aff" rid="A4">4</xref></contrib><contrib contrib-type="author"><name><surname>Bensmaia</surname><given-names>S.J</given-names></name><xref ref-type="aff" rid="A1">1</xref><xref ref-type="aff" rid="A2">2</xref><xref ref-type="aff" rid="A5">5</xref><xref ref-type="corresp" rid="cor1">*</xref></contrib></contrib-group><aff id="A1"><label>1</label>Department of Neuroscience, Johns Hopkins University School of Medicine, 813 Wood Basic Science Building, 725 N. Wolfe St., MD, 21205, USA</aff><aff id="A2"><label>2</label>Krieger Mind/Brain Institute, Johns Hopkins University, Krieger 338, 3400 N. Charles St., MD, 21218, USA</aff><aff id="A3"><label>3</label>Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital and Chang Gung University, 5 Fushing St. ,Taoyuan County, 333, Taiwan</aff><aff id="A4"><label>4</label>Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, 47405, USA</aff><aff id="A5"><label>5</label>Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL,60637, USA</aff><author-notes><corresp id="cor1"><label>*</label>Corresponding author Tel.: +1 773.834.5203, Fax.: +1 773.702.0037, 1027 E. 57<sup>th</sup> St., Chicago, IL, 60637, <email>sliman@uchicago.edu</email></corresp></author-notes><pub-date pub-type="nihms-submitted"><day>2</day><month>2</month><year>2011</year></pub-date><pub-date pub-type="ppub"><day>10</day><month>2</month><year>2011</year></pub-date><pub-date pub-type="pmc-release"><day>10</day><month>2</month><year>2012</year></pub-date><volume>69</volume><issue>3</issue><fpage>536</fpage><lpage>547</lpage><permissions><copyright-statement>© 2010 Elsevier Inc. All rights reserved.</copyright-statement><copyright-year>2010</copyright-year></permissions><abstract><title>Summary</title><p id="P1">How are local motion signals integrated to form a global motion percept? We investigate the neural mechanisms of tactile motion integration by presenting tactile gratings and plaids to the fingertips of monkeys, using the tactile analogue of a visual monitor, while recording the responses evoked in somatosensory cortical neurons. In parallel psychophysical experiments, we measure the perceived direction of the gratings and plaids. We identify a population of somatosensory neurons that exhibit integration properties comparable to those observed in area MT to analogous visual stimuli. We find that the responses of these neurons can account for the perceived direction of the stimuli across all stimulus conditions tested. We show that the preferred direction of the neurons and the perceived direction of the stimuli can be predicted from the weighted average of the directions of the individual stimulus features (edges and intersections).</p></abstract><contract-num rid="NS1">R01 NS018787-29
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