Different cortical activation patterns in blind and sighted humans during encoding and transformation of haptic images.
Identifieur interne : 002017 ( PubMed/Corpus ); précédent : 002016; suivant : 002018Different cortical activation patterns in blind and sighted humans during encoding and transformation of haptic images.
Auteurs : B. Röder ; F. Rösler ; E. HennighausenSource :
- Psychophysiology [ 0048-5772 ] ; 1997.
English descriptors
- KwdEn :
- MESH :
- physiology : Evoked Potentials, Neurons, Afferent, Occipital Lobe, Perception.
- physiopathology : Blindness.
- Adult, Electroencephalography, Female, Humans, Male.
Abstract
In this study, we investigated whether the occipital cortex of blind humans is activated during haptic perception and/or transformation of a haptic image. Slow event-related brain potentials were monitored from 18 electrodes in 12 sighted and 15 congenitally blind participants while they were engaged in a haptic mental rotation task. In both groups, slow negative shifts appeared over (a) the frontal cortex at the beginning of each processing episode, (b) the left-central to parietal cortex during encoding and maintaining of a haptic image, and (c) the central to parietal cortex during image transformation. A pronounced slow negative potential over the occipital cortex emerged only in the blind individuals and was time-locked to the processing epochs. Its amplitude increased with the amount of processing load. The slow wave effects observed in the blind individuals could indicate that occipital areas participate in specific, nonvisual functions or they could reflect a coactivation of these areas whenever the activation level of task-specific processing modules located elsewhere in the cortex is raised by nonspecific thalamocortical input.
PubMed: 9175444
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Hennighausen</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1997">1997</date><idno type="RBID">pubmed:9175444</idno><idno type="pmid">9175444</idno><idno type="wicri:Area/PubMed/Corpus">002017</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Different cortical activation patterns in blind and sighted humans during encoding and transformation of haptic images.</title><author><name sortKey="Roder, B" sort="Roder, B" uniqKey="Roder B" first="B" last="Röder">B. Röder</name><affiliation><nlm:affiliation>Department of Psychology, Philipps-University Marburg, Germany. roeder@mailer.uni-marburg.de</nlm:affiliation></affiliation></author><author><name sortKey="Rosler, F" sort="Rosler, F" uniqKey="Rosler F" first="F" last="Rösler">F. Rösler</name></author><author><name sortKey="Hennighausen, E" sort="Hennighausen, E" uniqKey="Hennighausen E" first="E" last="Hennighausen">E. Hennighausen</name></author></analytic><series><title level="j">Psychophysiology</title><idno type="ISSN">0048-5772</idno><imprint><date when="1997" type="published">1997</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Blindness (physiopathology)</term><term>Electroencephalography</term><term>Evoked Potentials (physiology)</term><term>Female</term><term>Humans</term><term>Male</term><term>Neurons, Afferent (physiology)</term><term>Occipital Lobe (physiology)</term><term>Perception (physiology)</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Evoked Potentials</term><term>Neurons, Afferent</term><term>Occipital Lobe</term><term>Perception</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Blindness</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Electroencephalography</term><term>Female</term><term>Humans</term><term>Male</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this study, we investigated whether the occipital cortex of blind humans is activated during haptic perception and/or transformation of a haptic image. Slow event-related brain potentials were monitored from 18 electrodes in 12 sighted and 15 congenitally blind participants while they were engaged in a haptic mental rotation task. In both groups, slow negative shifts appeared over (a) the frontal cortex at the beginning of each processing episode, (b) the left-central to parietal cortex during encoding and maintaining of a haptic image, and (c) the central to parietal cortex during image transformation. A pronounced slow negative potential over the occipital cortex emerged only in the blind individuals and was time-locked to the processing epochs. Its amplitude increased with the amount of processing load. The slow wave effects observed in the blind individuals could indicate that occipital areas participate in specific, nonvisual functions or they could reflect a coactivation of these areas whenever the activation level of task-specific processing modules located elsewhere in the cortex is raised by nonspecific thalamocortical input.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">9175444</PMID><DateCreated><Year>1997</Year><Month>07</Month><Day>18</Day></DateCreated><DateCompleted><Year>1997</Year><Month>07</Month><Day>18</Day></DateCompleted><DateRevised><Year>2009</Year><Month>11</Month><Day>11</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0048-5772</ISSN><JournalIssue CitedMedium="Print"><Volume>34</Volume><Issue>3</Issue><PubDate><Year>1997</Year><Month>May</Month></PubDate></JournalIssue><Title>Psychophysiology</Title><ISOAbbreviation>Psychophysiology</ISOAbbreviation></Journal><ArticleTitle>Different cortical activation patterns in blind and sighted humans during encoding and transformation of haptic images.</ArticleTitle><Pagination><MedlinePgn>292-307</MedlinePgn></Pagination><Abstract><AbstractText>In this study, we investigated whether the occipital cortex of blind humans is activated during haptic perception and/or transformation of a haptic image. Slow event-related brain potentials were monitored from 18 electrodes in 12 sighted and 15 congenitally blind participants while they were engaged in a haptic mental rotation task. In both groups, slow negative shifts appeared over (a) the frontal cortex at the beginning of each processing episode, (b) the left-central to parietal cortex during encoding and maintaining of a haptic image, and (c) the central to parietal cortex during image transformation. A pronounced slow negative potential over the occipital cortex emerged only in the blind individuals and was time-locked to the processing epochs. Its amplitude increased with the amount of processing load. The slow wave effects observed in the blind individuals could indicate that occipital areas participate in specific, nonvisual functions or they could reflect a coactivation of these areas whenever the activation level of task-specific processing modules located elsewhere in the cortex is raised by nonspecific thalamocortical input.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Röder</LastName><ForeName>B</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Department of Psychology, Philipps-University Marburg, Germany. roeder@mailer.uni-marburg.de</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rösler</LastName><ForeName>F</ForeName><Initials>F</Initials></Author><Author ValidYN="Y"><LastName>Hennighausen</LastName><ForeName>E</ForeName><Initials>E</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>UNITED STATES</Country><MedlineTA>Psychophysiology</MedlineTA><NlmUniqueID>0142657</NlmUniqueID><ISSNLinking>0048-5772</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000328">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D001766">Blindness</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000503">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004569">Electroencephalography</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005071">Evoked Potentials</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005260">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009475">Neurons, Afferent</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009778">Occipital Lobe</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D010465">Perception</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000502">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1997</Year><Month>5</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1997</Year><Month>5</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1997</Year><Month>5</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">9175444</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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