Know thyself: behavioral evidence for a structural representation of the human body
Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain. We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the num...
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| Veröffentlicht in: | PloS one 2009-05, Vol.4 (5), p.e5418-e5418 |
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| creator | Rusconi, Elena Gonzaga, Mirandola Adriani, Michela Braun, Christoph Haggard, Patrick |
| description | Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain.
We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the number of untouched fingers between two touched fingers was the same on both hands, or different. We thereby dissociated structural knowledge about fingers, specifying their order and relative position within a hand, from tactile sensory codes. Judgments following stimulation on homologous fingers were consistently more accurate than trials with no or partial homology. Further experiments showed that structural representations are more enduring than purely sensory codes, are used even when number of fingers is irrelevant to the task, and moreover involve an allocentric representation of finger order, independent of hand posture.
Our results suggest the existence of an allocentric representation of body structure at higher stages of the somatosensory processing pathway, in addition to primary sensory representation. |
| doi_str_mv | 10.1371/journal.pone.0005418 |
| format | Article |
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We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the number of untouched fingers between two touched fingers was the same on both hands, or different. We thereby dissociated structural knowledge about fingers, specifying their order and relative position within a hand, from tactile sensory codes. Judgments following stimulation on homologous fingers were consistently more accurate than trials with no or partial homology. Further experiments showed that structural representations are more enduring than purely sensory codes, are used even when number of fingers is irrelevant to the task, and moreover involve an allocentric representation of finger order, independent of hand posture.
Our results suggest the existence of an allocentric representation of body structure at higher stages of the somatosensory processing pathway, in addition to primary sensory representation.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0005418</identifier><identifier>PMID: 19412538</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Adolescent ; Adult ; Aphasia ; Awareness - physiology ; Body Image ; Brain ; Eye movements ; Female ; Fingers ; Fingers & toes ; Fingers - physiology ; Hand (anatomy) ; Homology ; Human behavior ; Humans ; Judgments ; Knowledge ; Male ; Memory ; Middle Aged ; Models, Psychological ; Neuropsychology ; Neuroscience/Cognitive Neuroscience ; Neuroscience/Experimental Psychology ; Neuroscience/Sensory Systems ; Neurosciences ; Patients ; Position sensing ; Posture ; Posture - physiology ; Representations ; Sensation - physiology ; Tactile ; Touch - physiology ; Young Adult</subject><ispartof>PloS one, 2009-05, Vol.4 (5), p.e5418-e5418</ispartof><rights>COPYRIGHT 2009 Public Library of Science</rights><rights>2009 Rusconi et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Rusconi et al. 2009</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c690t-274eca6b7fccc47f35caf7fdb0bece6c85e68e4b4b0d815b7b12af48d79551143</citedby><cites>FETCH-LOGICAL-c690t-274eca6b7fccc47f35caf7fdb0bece6c85e68e4b4b0d815b7b12af48d79551143</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2671600/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2671600/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,724,777,781,861,882,2096,2915,23847,27905,27906,53772,53774,79349,79350</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19412538$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Harris, Justin</contributor><creatorcontrib>Rusconi, Elena</creatorcontrib><creatorcontrib>Gonzaga, Mirandola</creatorcontrib><creatorcontrib>Adriani, Michela</creatorcontrib><creatorcontrib>Braun, Christoph</creatorcontrib><creatorcontrib>Haggard, Patrick</creatorcontrib><title>Know thyself: behavioral evidence for a structural representation of the human body</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain.
We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the number of untouched fingers between two touched fingers was the same on both hands, or different. We thereby dissociated structural knowledge about fingers, specifying their order and relative position within a hand, from tactile sensory codes. Judgments following stimulation on homologous fingers were consistently more accurate than trials with no or partial homology. Further experiments showed that structural representations are more enduring than purely sensory codes, are used even when number of fingers is irrelevant to the task, and moreover involve an allocentric representation of finger order, independent of hand posture.
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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rusconi, Elena</au><au>Gonzaga, Mirandola</au><au>Adriani, Michela</au><au>Braun, Christoph</au><au>Haggard, Patrick</au><au>Harris, Justin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Know thyself: behavioral evidence for a structural representation of the human body</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2009-05-01</date><risdate>2009</risdate><volume>4</volume><issue>5</issue><spage>e5418</spage><epage>e5418</epage><pages>e5418-e5418</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Representing one's own body is often viewed as a basic form of self-awareness. However, little is known about structural representations of the body in the brain.
We developed an inter-manual version of the classical "in-between" finger gnosis task: participants judged whether the number of untouched fingers between two touched fingers was the same on both hands, or different. We thereby dissociated structural knowledge about fingers, specifying their order and relative position within a hand, from tactile sensory codes. Judgments following stimulation on homologous fingers were consistently more accurate than trials with no or partial homology. Further experiments showed that structural representations are more enduring than purely sensory codes, are used even when number of fingers is irrelevant to the task, and moreover involve an allocentric representation of finger order, independent of hand posture.
Our results suggest the existence of an allocentric representation of body structure at higher stages of the somatosensory processing pathway, in addition to primary sensory representation.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>19412538</pmid><doi>10.1371/journal.pone.0005418</doi><tpages>e5418</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Adolescent Adult Aphasia Awareness - physiology Body Image Brain Eye movements Female Fingers Fingers & toes Fingers - physiology Hand (anatomy) Homology Human behavior Humans Judgments Knowledge Male Memory Middle Aged Models, Psychological Neuropsychology Neuroscience/Cognitive Neuroscience Neuroscience/Experimental Psychology Neuroscience/Sensory Systems Neurosciences Patients Position sensing Posture Posture - physiology Representations Sensation - physiology Tactile Touch - physiology Young Adult |
| title | Know thyself: behavioral evidence for a structural representation of the human body |
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