Sensory integration does not lead to sensory calibration
Identifieur interne : 002516 ( Pmc/Checkpoint ); précédent : 002515; suivant : 002517Sensory integration does not lead to sensory calibration
Auteurs : Jeroen B. J. Smeets [Pays-Bas] ; John J. Van Den Dobbelsteen ; Denise D. J. De Grave [Pays-Bas] ; Robert J. Van Beers ; Eli Brenner [Pays-Bas]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2006.
Abstract
One generally has the impression that one feels one's hand at the same location as one sees it. However, because our brain deals with possibly conflicting visual and proprioceptive information about hand position by combining it into an optimal estimate of the hand's location, mutual calibration is not necessary to achieve such a coherent percept. Does sensory integration nevertheless entail sensory calibration? We asked subjects to move their hand between visual targets. Blocks of trials without any visual feedback about their hand's position were alternated with blocks with veridical visual feedback. Whenever vision was removed, individual subjects' hands slowly drifted toward the same position to which they had drifted on previous blocks without visual feedback. The time course of the observed drift depended in a predictable manner (assuming optimal sensory combination) on the variable errors in the blocks with and without visual feedback. We conclude that the optimal use of unaligned sensory information, rather than changes within either of the senses or an accumulation of execution errors, is the cause of the frequently observed movement drift. The conclusion that seeing one's hand does not lead to an alignment between vision and proprioception has important consequences for the interpretation of previous work on visuomotor adaptation.
Url:
DOI: 10.1073/pnas.0607687103
PubMed: 17130453
PubMed Central: 1693739
Affiliations:
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<wicri:noCountry code="subfield">The Netherlands; and</wicri:noCountry>
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<author><name sortKey="Brenner, Eli" sort="Brenner, Eli" uniqKey="Brenner E" first="Eli" last="Brenner">Eli Brenner</name>
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<wicri:noCountry code="subfield">The Netherlands; and</wicri:noCountry>
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<front><div type="abstract" xml:lang="en"><p>One generally has the impression that one feels one's hand at the same location as one sees it. However, because our brain deals with possibly conflicting visual and proprioceptive information about hand position by combining it into an optimal estimate of the hand's location, mutual calibration is not necessary to achieve such a coherent percept. Does sensory integration nevertheless entail sensory calibration? We asked subjects to move their hand between visual targets. Blocks of trials without any visual feedback about their hand's position were alternated with blocks with veridical visual feedback. Whenever vision was removed, individual subjects' hands slowly drifted toward the same position to which they had drifted on previous blocks without visual feedback. The time course of the observed drift depended in a predictable manner (assuming optimal sensory combination) on the variable errors in the blocks with and without visual feedback. We conclude that the optimal use of unaligned sensory information, rather than changes within either of the senses or an accumulation of execution errors, is the cause of the frequently observed movement drift. The conclusion that seeing one's hand does not lead to an alignment between vision and proprioception has important consequences for the interpretation of previous work on visuomotor adaptation.</p>
</div>
</front>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Proc Natl Acad Sci U S A</journal-id>
<journal-id journal-id-type="publisher-id">PNAS</journal-id>
<journal-title>Proceedings of the National Academy of Sciences of the United States of America</journal-title>
<issn pub-type="ppub">0027-8424</issn>
<issn pub-type="epub">1091-6490</issn>
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<article-id pub-id-type="pmc">1693739</article-id>
<article-id pub-id-type="publisher-id">4287</article-id>
<article-id pub-id-type="doi">10.1073/pnas.0607687103</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Biological Sciences</subject>
<subj-group><subject>Neuroscience</subject>
</subj-group>
</subj-group>
<subj-group><subject>Social Sciences</subject>
<subj-group><subject>Psychology</subject>
</subj-group>
</subj-group>
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<title-group><article-title>Sensory integration does not lead to sensory calibration</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Smeets</surname>
<given-names>Jeroen B. J.</given-names>
</name>
<xref rid="aff1" ref-type="aff">*</xref>
<xref rid="aff2" ref-type="aff"><sup>†</sup>
</xref>
<xref ref-type="corresp" rid="cor1"><sup>‡</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>van den Dobbelsteen</surname>
<given-names>John J.</given-names>
</name>
<xref rid="aff1" ref-type="aff">*</xref>
<xref rid="FN1" ref-type="author-notes"><sup>§</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>de Grave</surname>
<given-names>Denise D. J.</given-names>
</name>
<xref rid="aff1" ref-type="aff">*</xref>
<xref rid="aff2" ref-type="aff"><sup>†</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>van Beers</surname>
<given-names>Robert J.</given-names>
</name>
<xref rid="aff1" ref-type="aff">*</xref>
<xref rid="FN2" ref-type="author-notes"><sup>¶</sup>
</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Brenner</surname>
<given-names>Eli</given-names>
</name>
<xref rid="aff1" ref-type="aff">*</xref>
<xref rid="aff2" ref-type="aff"><sup>†</sup>
</xref>
</contrib>
<aff id="aff1">*Afdeling Neurowetenschappen, Erasmus MC, P.O. Box 1738, NL-3000 DR, Rotterdam, The Netherlands; and</aff>
<aff id="aff2"><sup>†</sup>
Faculty of Human Movement Sciences, Vrije Universiteit, NL-1081 BT, Amsterdam, The Netherlands</aff>
</contrib-group>
<author-notes><corresp id="cor1"><sup>‡</sup>
To whom correspondence should be addressed at:
<addr-line>Faculty of Human Movement Sciences, Vrije Universiteit, van der Boechorststraat 9, NL-1081 BT Amsterdam, The Netherlands.</addr-line>
E-mail:
<email>j.smeets@fbw.vu.nl</email>
</corresp>
<fn fn-type="edited-by"><p>Edited by Dale Purves, Duke University Medical Center, Durham, NC, and approved October 9, 2006</p>
</fn>
<fn fn-type="con"><p>Author contributions: J.B.J.S. and J.J.v.d.D. designed research; J.B.J.S., D.D.J.d.G., and R.J.v.B. performed research; J.B.J.S. and R.J.v.B. analyzed data; and J.B.J.S., R.J.v.B., and E.B. wrote the paper.</p>
</fn>
<fn id="FN1" fn-type="present-address"><p><sup>§</sup>
Present address: Department of Biomechanical Engineering, Delft University of Technology, NL-2628 CD Delft, The Netherlands.</p>
</fn>
<fn id="FN2" fn-type="present-address"><p><sup>¶</sup>
Present address: Department Physics of Man, Helmholtz Institute, Utrecht University, NL-3584 CC, Utrecht, The Netherlands.</p>
</fn>
</author-notes>
<pub-date pub-type="ppub"><day>5</day>
<month>12</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub"><day>27</day>
<month>11</month>
<year>2006</year>
</pub-date>
<volume>103</volume>
<issue>49</issue>
<fpage>18781</fpage>
<lpage>18786</lpage>
<history><date date-type="received"><day>2</day>
<month>9</month>
<year>2006</year>
</date>
</history>
<copyright-statement>© 2006 by The National Academy of Sciences of the USA</copyright-statement>
<copyright-year>2006</copyright-year>
<self-uri xlink:title="pdf" xlink:href="zpq04906018781.pdf"></self-uri>
<abstract><p>One generally has the impression that one feels one's hand at the same location as one sees it. However, because our brain deals with possibly conflicting visual and proprioceptive information about hand position by combining it into an optimal estimate of the hand's location, mutual calibration is not necessary to achieve such a coherent percept. Does sensory integration nevertheless entail sensory calibration? We asked subjects to move their hand between visual targets. Blocks of trials without any visual feedback about their hand's position were alternated with blocks with veridical visual feedback. Whenever vision was removed, individual subjects' hands slowly drifted toward the same position to which they had drifted on previous blocks without visual feedback. The time course of the observed drift depended in a predictable manner (assuming optimal sensory combination) on the variable errors in the blocks with and without visual feedback. We conclude that the optimal use of unaligned sensory information, rather than changes within either of the senses or an accumulation of execution errors, is the cause of the frequently observed movement drift. The conclusion that seeing one's hand does not lead to an alignment between vision and proprioception has important consequences for the interpretation of previous work on visuomotor adaptation.</p>
</abstract>
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