Haptic underestimation of angular extent.
Identifieur interne : 001F20 ( PubMed/Corpus ); précédent : 001F19; suivant : 001F21Haptic underestimation of angular extent.
Auteurs : S. Lakatos ; L E MarksSource :
- Perception [ 0301-0066 ] ; 1998.
English descriptors
- KwdEn :
- MESH :
- methods : Photic Stimulation.
- Adolescent, Adult, Female, Humans, Male, Sensory Deprivation, Space Perception, Touch.
Abstract
To what extent can individuals accurately estimate the angle between two surfaces through touch alone, and how does tactile judgment compare to visual judgment? Subjects' ability to estimate angle size for a variety of haptic and visual stimuli was examined in a series of nine experiments. Triangular wooden blocks and raised contour outlines comprising different angles and radii of curvature at the apex were used in experiments 1-4 and it was found that subjects consistently underestimated angular extent relative to visual baselines and that the degree of underestimation was inversely related to the actual size of the angle. Angle estimates also increased with increasing radius of curvature when actual angle size was held constant. In contrast, experiments 5-8 showed that subjects did not underestimate angular extent when asked to perform a haptic-visual match to a computerized visual image; this outcome suggests that visual input may 'recalibrate' the haptic system's internal metric for estimating angle. The basis of this cross-modal interaction was investigated in experiment 9 by varying the nature and extent of visual cues available in haptic estimation tasks. The addition of visual-spatial cues did not significantly reduce the magnitude of haptic underestimation. The experiments as a whole indicate that haptic underestimations of angle occur in a number of different stimulus contexts, but leave open the question of exactly what type of visual information may serve to recalibrate touch in this regard.
PubMed: 10197190
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Haptic underestimation of angular extent.</title><author><name sortKey="Lakatos, S" sort="Lakatos, S" uniqKey="Lakatos S" first="S" last="Lakatos">S. Lakatos</name><affiliation><nlm:affiliation>John B Pierce Laboratory, New Haven, CT 06519, USA. lakatos@vancouver.wsu.edu</nlm:affiliation></affiliation></author><author><name sortKey="Marks, L E" sort="Marks, L E" uniqKey="Marks L" first="L E" last="Marks">L E Marks</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1998">1998</date><idno type="RBID">pubmed:10197190</idno><idno type="pmid">10197190</idno><idno type="wicri:Area/PubMed/Corpus">001F20</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Haptic underestimation of angular extent.</title><author><name sortKey="Lakatos, S" sort="Lakatos, S" uniqKey="Lakatos S" first="S" last="Lakatos">S. Lakatos</name><affiliation><nlm:affiliation>John B Pierce Laboratory, New Haven, CT 06519, USA. lakatos@vancouver.wsu.edu</nlm:affiliation></affiliation></author><author><name sortKey="Marks, L E" sort="Marks, L E" uniqKey="Marks L" first="L E" last="Marks">L E Marks</name></author></analytic><series><title level="j">Perception</title><idno type="ISSN">0301-0066</idno><imprint><date when="1998" type="published">1998</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adolescent</term><term>Adult</term><term>Female</term><term>Humans</term><term>Male</term><term>Photic Stimulation (methods)</term><term>Sensory Deprivation</term><term>Space Perception</term><term>Touch</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Photic Stimulation</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adolescent</term><term>Adult</term><term>Female</term><term>Humans</term><term>Male</term><term>Sensory Deprivation</term><term>Space Perception</term><term>Touch</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To what extent can individuals accurately estimate the angle between two surfaces through touch alone, and how does tactile judgment compare to visual judgment? Subjects' ability to estimate angle size for a variety of haptic and visual stimuli was examined in a series of nine experiments. Triangular wooden blocks and raised contour outlines comprising different angles and radii of curvature at the apex were used in experiments 1-4 and it was found that subjects consistently underestimated angular extent relative to visual baselines and that the degree of underestimation was inversely related to the actual size of the angle. Angle estimates also increased with increasing radius of curvature when actual angle size was held constant. In contrast, experiments 5-8 showed that subjects did not underestimate angular extent when asked to perform a haptic-visual match to a computerized visual image; this outcome suggests that visual input may 'recalibrate' the haptic system's internal metric for estimating angle. The basis of this cross-modal interaction was investigated in experiment 9 by varying the nature and extent of visual cues available in haptic estimation tasks. The addition of visual-spatial cues did not significantly reduce the magnitude of haptic underestimation. The experiments as a whole indicate that haptic underestimations of angle occur in a number of different stimulus contexts, but leave open the question of exactly what type of visual information may serve to recalibrate touch in this regard.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">10197190</PMID><DateCreated><Year>1999</Year><Month>04</Month><Day>30</Day></DateCreated><DateCompleted><Year>1999</Year><Month>04</Month><Day>30</Day></DateCompleted><DateRevised><Year>2007</Year><Month>11</Month><Day>14</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0301-0066</ISSN><JournalIssue CitedMedium="Print"><Volume>27</Volume><Issue>6</Issue><PubDate><Year>1998</Year></PubDate></JournalIssue><Title>Perception</Title><ISOAbbreviation>Perception</ISOAbbreviation></Journal><ArticleTitle>Haptic underestimation of angular extent.</ArticleTitle><Pagination><MedlinePgn>737-54</MedlinePgn></Pagination><Abstract><AbstractText>To what extent can individuals accurately estimate the angle between two surfaces through touch alone, and how does tactile judgment compare to visual judgment? Subjects' ability to estimate angle size for a variety of haptic and visual stimuli was examined in a series of nine experiments. Triangular wooden blocks and raised contour outlines comprising different angles and radii of curvature at the apex were used in experiments 1-4 and it was found that subjects consistently underestimated angular extent relative to visual baselines and that the degree of underestimation was inversely related to the actual size of the angle. Angle estimates also increased with increasing radius of curvature when actual angle size was held constant. In contrast, experiments 5-8 showed that subjects did not underestimate angular extent when asked to perform a haptic-visual match to a computerized visual image; this outcome suggests that visual input may 'recalibrate' the haptic system's internal metric for estimating angle. The basis of this cross-modal interaction was investigated in experiment 9 by varying the nature and extent of visual cues available in haptic estimation tasks. The addition of visual-spatial cues did not significantly reduce the magnitude of haptic underestimation. The experiments as a whole indicate that haptic underestimations of angle occur in a number of different stimulus contexts, but leave open the question of exactly what type of visual information may serve to recalibrate touch in this regard.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Lakatos</LastName><ForeName>S</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>John B Pierce Laboratory, New Haven, CT 06519, USA. lakatos@vancouver.wsu.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Marks</LastName><ForeName>L E</ForeName><Initials>LE</Initials></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><GrantID>DC00174</GrantID><Acronym>DC</Acronym><Agency>NIDCD NIH HHS</Agency><Country>United States</Country></Grant><Grant><GrantID>DC00271-13</GrantID><Acronym>DC</Acronym><Agency>NIDCD NIH HHS</Agency><Country>United States</Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013487">Research Support, U.S. Gov't, P.H.S.</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>ENGLAND</Country><MedlineTA>Perception</MedlineTA><NlmUniqueID>0372307</NlmUniqueID><ISSNLinking>0301-0066</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000293">Adolescent</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000328">Adult</DescriptorName></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="D010775">Photic Stimulation</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000379">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012683">Sensory Deprivation</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D013028">Space Perception</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D014110">Touch</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1999</Year><Month>4</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1999</Year><Month>4</Month><Day>10</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1999</Year><Month>4</Month><Day>10</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">10197190</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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