Role of gravitational cues in the haptic perception of orientation.
Identifieur interne : 002057 ( PubMed/Corpus ); précédent : 002056; suivant : 002058Role of gravitational cues in the haptic perception of orientation.
Auteurs : E. Gentaz ; Y. HatwellSource :
- Perception & psychophysics [ 0031-5117 ] ; 1996.
English descriptors
- KwdEn :
- MESH :
Abstract
The haptic perception of vertical, horizontal, +45 degrees-oblique, and +135 degrees-oblique orientations was studied in adults. The purpose was to establish whether the gravitational cues provided by the scanning arm-hand system were involved in the haptic oblique effect (lower performances in oblique orientations than in vertical-horizontal ones) and more generally in the haptic coding of orientation. The magnitude of these cues was manipulated by changing gravity constraints, and their variability was manipulated by changing the planes in which the task was performed (horizontal, frontal, and sagittal). In Experiment 1, only the horizontal plane was tested, either with the forearm resting on the disk supporting the rod ("supported forearm" condition) or with the forearm unsupported in the air. In the latter case, antigravitational forces were elicited during scanning. The oblique effect was present in the "unsupported" condition and was absent in the "supported" condition. In Experiment 2, the three planes were tested, either in a "natural" or in a "lightened forearm" condition in which the gravitational cues were reduced by lightening the subject's forearm. The magnitude of the oblique effect was lower in the "lightened" condition than in the "natural" one, and there was no plane effect. In Experiment 3, the subject's forearm was loaded with either a 500- or a 1,000-g bracelet, or it was not loaded. The oblique effect was the same in the three conditions, and the plane effect (lower performances in the horizontal plane than in the frontal and sagittal ones) was present only when the forearm was loaded. Taken together, these results suggested that gravitational cues may play a role in haptic coding of orientation, although the effects of decreasing or increasing these cues are not symmetrical.
PubMed: 8961837
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Hatwell</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1996">1996</date><idno type="RBID">pubmed:8961837</idno><idno type="pmid">8961837</idno><idno type="wicri:Area/PubMed/Corpus">002057</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Role of gravitational cues in the haptic perception of orientation.</title><author><name sortKey="Gentaz, E" sort="Gentaz, E" uniqKey="Gentaz E" first="E" last="Gentaz">E. Gentaz</name><affiliation><nlm:affiliation>Laboratoire de Psychologie Expérimentale, Université Pierre Mendés France, Grenoble. gentaz@ccomm.grenet.fr</nlm:affiliation></affiliation></author><author><name sortKey="Hatwell, Y" sort="Hatwell, Y" uniqKey="Hatwell Y" first="Y" last="Hatwell">Y. Hatwell</name></author></analytic><series><title level="j">Perception & psychophysics</title><idno type="ISSN">0031-5117</idno><imprint><date when="1996" type="published">1996</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Cues</term><term>Female</term><term>Gravitation</term><term>Humans</term><term>Kinesthesis</term><term>Male</term><term>Orientation</term><term>Proprioception</term><term>Psychophysics</term><term>Sensory Deprivation</term><term>Stereognosis</term><term>Touch</term><term>Weight Perception</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Cues</term><term>Female</term><term>Gravitation</term><term>Humans</term><term>Kinesthesis</term><term>Male</term><term>Orientation</term><term>Proprioception</term><term>Psychophysics</term><term>Sensory Deprivation</term><term>Stereognosis</term><term>Touch</term><term>Weight Perception</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The haptic perception of vertical, horizontal, +45 degrees-oblique, and +135 degrees-oblique orientations was studied in adults. The purpose was to establish whether the gravitational cues provided by the scanning arm-hand system were involved in the haptic oblique effect (lower performances in oblique orientations than in vertical-horizontal ones) and more generally in the haptic coding of orientation. The magnitude of these cues was manipulated by changing gravity constraints, and their variability was manipulated by changing the planes in which the task was performed (horizontal, frontal, and sagittal). In Experiment 1, only the horizontal plane was tested, either with the forearm resting on the disk supporting the rod ("supported forearm" condition) or with the forearm unsupported in the air. In the latter case, antigravitational forces were elicited during scanning. The oblique effect was present in the "unsupported" condition and was absent in the "supported" condition. In Experiment 2, the three planes were tested, either in a "natural" or in a "lightened forearm" condition in which the gravitational cues were reduced by lightening the subject's forearm. The magnitude of the oblique effect was lower in the "lightened" condition than in the "natural" one, and there was no plane effect. In Experiment 3, the subject's forearm was loaded with either a 500- or a 1,000-g bracelet, or it was not loaded. The oblique effect was the same in the three conditions, and the plane effect (lower performances in the horizontal plane than in the frontal and sagittal ones) was present only when the forearm was loaded. Taken together, these results suggested that gravitational cues may play a role in haptic coding of orientation, although the effects of decreasing or increasing these cues are not symmetrical.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">8961837</PMID><DateCreated><Year>1997</Year><Month>01</Month><Day>29</Day></DateCreated><DateCompleted><Year>1997</Year><Month>01</Month><Day>29</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0031-5117</ISSN><JournalIssue CitedMedium="Print"><Volume>58</Volume><Issue>8</Issue><PubDate><Year>1996</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Perception & psychophysics</Title><ISOAbbreviation>Percept Psychophys</ISOAbbreviation></Journal><ArticleTitle>Role of gravitational cues in the haptic perception of orientation.</ArticleTitle><Pagination><MedlinePgn>1278-92</MedlinePgn></Pagination><Abstract><AbstractText>The haptic perception of vertical, horizontal, +45 degrees-oblique, and +135 degrees-oblique orientations was studied in adults. The purpose was to establish whether the gravitational cues provided by the scanning arm-hand system were involved in the haptic oblique effect (lower performances in oblique orientations than in vertical-horizontal ones) and more generally in the haptic coding of orientation. The magnitude of these cues was manipulated by changing gravity constraints, and their variability was manipulated by changing the planes in which the task was performed (horizontal, frontal, and sagittal). In Experiment 1, only the horizontal plane was tested, either with the forearm resting on the disk supporting the rod ("supported forearm" condition) or with the forearm unsupported in the air. In the latter case, antigravitational forces were elicited during scanning. The oblique effect was present in the "unsupported" condition and was absent in the "supported" condition. In Experiment 2, the three planes were tested, either in a "natural" or in a "lightened forearm" condition in which the gravitational cues were reduced by lightening the subject's forearm. The magnitude of the oblique effect was lower in the "lightened" condition than in the "natural" one, and there was no plane effect. In Experiment 3, the subject's forearm was loaded with either a 500- or a 1,000-g bracelet, or it was not loaded. The oblique effect was the same in the three conditions, and the plane effect (lower performances in the horizontal plane than in the frontal and sagittal ones) was present only when the forearm was loaded. Taken together, these results suggested that gravitational cues may play a role in haptic coding of orientation, although the effects of decreasing or increasing these cues are not symmetrical.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Gentaz</LastName><ForeName>E</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Laboratoire de Psychologie Expérimentale, Université Pierre Mendés France, Grenoble. gentaz@ccomm.grenet.fr</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hatwell</LastName><ForeName>Y</ForeName><Initials>Y</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>Percept Psychophys</MedlineTA><NlmUniqueID>0200445</NlmUniqueID><ISSNLinking>0031-5117</ISSNLinking></MedlineJournalInfo><CitationSubset>C</CitationSubset><CitationSubset>S</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000328">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D003463">Cues</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005260">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D006112">Gravitation</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D007699">Kinesthesis</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D009949">Orientation</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011434">Proprioception</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011601">Psychophysics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012683">Sensory Deprivation</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D013236">Stereognosis</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D014110">Touch</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D014892">Weight Perception</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1996</Year><Month>11</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1996</Year><Month>11</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1996</Year><Month>11</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">8961837</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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