Influence of shape on haptic curvature perception.
Identifieur interne : 001F30 ( PubMed/Corpus ); précédent : 001F29; suivant : 001F31Influence of shape on haptic curvature perception.
Auteurs : I M Vogels ; A M Kappers ; J J KoenderinkSource :
- Acta psychologica [ 0001-6918 ] ; 1999.
English descriptors
- KwdEn :
- MESH :
- physiology : Fingers, Hand.
- Discrimination Learning, Humans, Multivariate Analysis, Regression Analysis, Sensory Thresholds, Stereognosis.
Abstract
Curvature discrimination of hand-sized doubly curved surfaces by means of static touch was investigated. Stimuli consisted of hyperbolical, cylindrical, elliptical and spherical surfaces of various curvatures. In the first experiment subjects had to discriminate the curvature along a specified orientation (the discrimination orientation) of a doubly curved surface from a flat surface. The curvature to be discriminated was oriented either along the middle finger or across the middle finger of the right hand. Independent of the shape of the surface, thresholds were found to be about 1.6 times smaller along the middle finger than across the middle finger. Discrimination biases were found to be strongly influenced by the shape of the surface; subjects judged a curvature to be more convex when the perpendicular curvature was convex than when this curvature was concave. With the results of the second experiment it could be ruled out that the influence of shape on curvature perception was simply due to a systematic error made by the subject regarding the discrimination orientation.
PubMed: 9894690
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pubmed:9894690Le document en format XML
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Stimuli consisted of hyperbolical, cylindrical, elliptical and spherical surfaces of various curvatures. In the first experiment subjects had to discriminate the curvature along a specified orientation (the discrimination orientation) of a doubly curved surface from a flat surface. The curvature to be discriminated was oriented either along the middle finger or across the middle finger of the right hand. Independent of the shape of the surface, thresholds were found to be about 1.6 times smaller along the middle finger than across the middle finger. Discrimination biases were found to be strongly influenced by the shape of the surface; subjects judged a curvature to be more convex when the perpendicular curvature was convex than when this curvature was concave. With the results of the second experiment it could be ruled out that the influence of shape on curvature perception was simply due to a systematic error made by the subject regarding the discrimination orientation.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">9894690</PMID><DateCreated><Year>1999</Year><Month>02</Month><Day>09</Day></DateCreated><DateCompleted><Year>1999</Year><Month>02</Month><Day>09</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0001-6918</ISSN><JournalIssue CitedMedium="Print"><Volume>100</Volume><Issue>3</Issue><PubDate><Year>1999</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Acta psychologica</Title><ISOAbbreviation>Acta Psychol (Amst)</ISOAbbreviation></Journal><ArticleTitle>Influence of shape on haptic curvature perception.</ArticleTitle><Pagination><MedlinePgn>267-89</MedlinePgn></Pagination><Abstract><AbstractText>Curvature discrimination of hand-sized doubly curved surfaces by means of static touch was investigated. Stimuli consisted of hyperbolical, cylindrical, elliptical and spherical surfaces of various curvatures. In the first experiment subjects had to discriminate the curvature along a specified orientation (the discrimination orientation) of a doubly curved surface from a flat surface. The curvature to be discriminated was oriented either along the middle finger or across the middle finger of the right hand. Independent of the shape of the surface, thresholds were found to be about 1.6 times smaller along the middle finger than across the middle finger. Discrimination biases were found to be strongly influenced by the shape of the surface; subjects judged a curvature to be more convex when the perpendicular curvature was convex than when this curvature was concave. With the results of the second experiment it could be ruled out that the influence of shape on curvature perception was simply due to a systematic error made by the subject regarding the discrimination orientation.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Vogels</LastName><ForeName>I M</ForeName><Initials>IM</Initials><AffiliationInfo><Affiliation>Helmholtz Instituut, Utrecht, The Netherlands.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Kappers</LastName><ForeName>A M</ForeName><Initials>AM</Initials></Author><Author ValidYN="Y"><LastName>Koenderink</LastName><ForeName>J J</ForeName><Initials>JJ</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016430">Clinical Trial</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D016449">Randomized Controlled Trial</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>NETHERLANDS</Country><MedlineTA>Acta Psychol (Amst)</MedlineTA><NlmUniqueID>0370366</NlmUniqueID><ISSNLinking>0001-6918</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D004193">Discrimination Learning</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005385">Fingers</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006225">Hand</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D015999">Multivariate Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012044">Regression Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012684">Sensory Thresholds</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D013236">Stereognosis</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1999</Year><Month>1</Month><Day>23</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1999</Year><Month>1</Month><Day>23</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1999</Year><Month>1</Month><Day>23</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">9894690</ArticleId><ArticleId IdType="pii">S0001-6918(98)00041-9</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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