Tactile acuity in the blind: a closer look reveals superiority over the sighted in some but not all cutaneous tasks.
Identifieur interne : 001271 ( PubMed/Corpus ); précédent : 001270; suivant : 001272Tactile acuity in the blind: a closer look reveals superiority over the sighted in some but not all cutaneous tasks.
Auteurs : Flamine Alary ; Marco Duquette ; Rachel Goldstein ; C. Elaine Chapman ; Patrice Voss ; Valérie La Buissonnière-Ariza ; Franco LeporeSource :
- Neuropsychologia [ 1873-3514 ] ; 2009.
English descriptors
- KwdEn :
- Adolescent, Adult, Age of Onset, Blindness (physiopathology), Blindness (psychology), Discrimination (Psychology) (physiology), Female, Fingers, Humans, Light, Male, Middle Aged, Neuropsychological Tests, Orientation (physiology), Photic Stimulation, Psychophysics, Reaction Time (physiology), Sensory Thresholds (physiology), Signal Detection, Psychological, Skin (innervation), Touch (physiology), Vibration, Young Adult.
- MESH :
- innervation : Skin.
- physiology : Discrimination (Psychology), Orientation, Reaction Time, Sensory Thresholds, Touch.
- physiopathology : Blindness.
- psychology : Blindness.
- Adolescent, Adult, Age of Onset, Female, Fingers, Humans, Light, Male, Middle Aged, Neuropsychological Tests, Photic Stimulation, Psychophysics, Signal Detection, Psychological, Vibration, Young Adult.
Abstract
Previous studies have shown that blind subjects may outperform the sighted on certain tactile discrimination tasks. We recently showed that blind subjects outperformed the sighted in a haptic 2D-angle discrimination task. The purpose of this study was to compare the performance of the same blind (n=16) and sighted (n=17, G1) subjects in three tactile discrimination tasks dependent solely on cutaneous inputs from the fingertip of the index finger, D2. A second group of sighted subjects (n=30, G2) were also tested. Texture discrimination thresholds were 0.62 (G1)-0.80 mm (G2) for the sighted subjects, and 0.64 mm for the blind (standard, 2mm spatial period). Grating orientation thresholds were 0.99 (G1)-1.12 mm (G2) for the sighted subjects, and 0.96 mm for the blind. Finally, vibrotactile frequency discrimination thresholds (100 Hz standard) were 19.5 (G2) and 20.0 Hz (G1) for the sighted, and 16.5 Hz for the blind subjects. There were no significant differences in performance between the blind and the sighted subjects for the grating orientation or vibrotactile frequency discrimination tasks. In contrast, blind subjects outperformed the sighted for the texture discrimination task (G2 only), possibly reflecting the fact that the raised dot surfaces were similar to the dots forming Braille characters (all were fluent Braille readers).
DOI: 10.1016/j.neuropsychologia.2009.03.014
PubMed: 19467354
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Elaine Chapman</name></author><author><name sortKey="Voss, Patrice" sort="Voss, Patrice" uniqKey="Voss P" first="Patrice" last="Voss">Patrice Voss</name></author><author><name sortKey="La Buissonniere Ariza, Valerie" sort="La Buissonniere Ariza, Valerie" uniqKey="La Buissonniere Ariza V" first="Valérie" last="La Buissonnière-Ariza">Valérie La Buissonnière-Ariza</name></author><author><name sortKey="Lepore, Franco" sort="Lepore, Franco" uniqKey="Lepore F" first="Franco" last="Lepore">Franco Lepore</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2009">2009</date><idno type="doi">10.1016/j.neuropsychologia.2009.03.014</idno><idno type="RBID">pubmed:19467354</idno><idno type="pmid">19467354</idno><idno type="wicri:Area/PubMed/Corpus">001271</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Tactile acuity in the blind: a closer look reveals superiority over the sighted in some but not all cutaneous tasks.</title><author><name sortKey="Alary, Flamine" sort="Alary, Flamine" uniqKey="Alary F" first="Flamine" last="Alary">Flamine Alary</name><affiliation><nlm:affiliation>Département de Psychologie, Centre de Recherche en Neuropsychologie et Cognition, Université de Montréal, Succ Centre-Ville, Montréal, QC, Canada.</nlm:affiliation></affiliation></author><author><name sortKey="Duquette, Marco" sort="Duquette, Marco" uniqKey="Duquette M" first="Marco" last="Duquette">Marco Duquette</name></author><author><name sortKey="Goldstein, Rachel" sort="Goldstein, Rachel" uniqKey="Goldstein R" first="Rachel" last="Goldstein">Rachel Goldstein</name></author><author><name sortKey="Elaine Chapman, C" sort="Elaine Chapman, C" uniqKey="Elaine Chapman C" first="C" last="Elaine Chapman">C. Elaine Chapman</name></author><author><name sortKey="Voss, Patrice" sort="Voss, Patrice" uniqKey="Voss P" first="Patrice" last="Voss">Patrice Voss</name></author><author><name sortKey="La Buissonniere Ariza, Valerie" sort="La Buissonniere Ariza, Valerie" uniqKey="La Buissonniere Ariza V" first="Valérie" last="La Buissonnière-Ariza">Valérie La Buissonnière-Ariza</name></author><author><name sortKey="Lepore, Franco" sort="Lepore, Franco" uniqKey="Lepore F" first="Franco" last="Lepore">Franco Lepore</name></author></analytic><series><title level="j">Neuropsychologia</title><idno type="eISSN">1873-3514</idno><imprint><date when="2009" type="published">2009</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adolescent</term><term>Adult</term><term>Age of Onset</term><term>Blindness (physiopathology)</term><term>Blindness (psychology)</term><term>Discrimination (Psychology) (physiology)</term><term>Female</term><term>Fingers</term><term>Humans</term><term>Light</term><term>Male</term><term>Middle Aged</term><term>Neuropsychological Tests</term><term>Orientation (physiology)</term><term>Photic Stimulation</term><term>Psychophysics</term><term>Reaction Time (physiology)</term><term>Sensory Thresholds (physiology)</term><term>Signal Detection, Psychological</term><term>Skin (innervation)</term><term>Touch (physiology)</term><term>Vibration</term><term>Young Adult</term></keywords><keywords scheme="MESH" qualifier="innervation" xml:lang="en"><term>Skin</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Discrimination (Psychology)</term><term>Orientation</term><term>Reaction Time</term><term>Sensory Thresholds</term><term>Touch</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Blindness</term></keywords><keywords scheme="MESH" qualifier="psychology" xml:lang="en"><term>Blindness</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adolescent</term><term>Adult</term><term>Age of Onset</term><term>Female</term><term>Fingers</term><term>Humans</term><term>Light</term><term>Male</term><term>Middle Aged</term><term>Neuropsychological Tests</term><term>Photic Stimulation</term><term>Psychophysics</term><term>Signal Detection, Psychological</term><term>Vibration</term><term>Young Adult</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Previous studies have shown that blind subjects may outperform the sighted on certain tactile discrimination tasks. We recently showed that blind subjects outperformed the sighted in a haptic 2D-angle discrimination task. The purpose of this study was to compare the performance of the same blind (n=16) and sighted (n=17, G1) subjects in three tactile discrimination tasks dependent solely on cutaneous inputs from the fingertip of the index finger, D2. A second group of sighted subjects (n=30, G2) were also tested. Texture discrimination thresholds were 0.62 (G1)-0.80 mm (G2) for the sighted subjects, and 0.64 mm for the blind (standard, 2mm spatial period). Grating orientation thresholds were 0.99 (G1)-1.12 mm (G2) for the sighted subjects, and 0.96 mm for the blind. Finally, vibrotactile frequency discrimination thresholds (100 Hz standard) were 19.5 (G2) and 20.0 Hz (G1) for the sighted, and 16.5 Hz for the blind subjects. There were no significant differences in performance between the blind and the sighted subjects for the grating orientation or vibrotactile frequency discrimination tasks. In contrast, blind subjects outperformed the sighted for the texture discrimination task (G2 only), possibly reflecting the fact that the raised dot surfaces were similar to the dots forming Braille characters (all were fluent Braille readers).</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">19467354</PMID><DateCreated><Year>2009</Year><Month>05</Month><Day>26</Day></DateCreated><DateCompleted><Year>2009</Year><Month>08</Month><Day>14</Day></DateCompleted><DateRevised><Year>2009</Year><Month>11</Month><Day>11</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-3514</ISSN><JournalIssue CitedMedium="Internet"><Volume>47</Volume><Issue>10</Issue><PubDate><Year>2009</Year><Month>Aug</Month></PubDate></JournalIssue><Title>Neuropsychologia</Title><ISOAbbreviation>Neuropsychologia</ISOAbbreviation></Journal><ArticleTitle>Tactile acuity in the blind: a closer look reveals superiority over the sighted in some but not all cutaneous tasks.</ArticleTitle><Pagination><MedlinePgn>2037-43</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.neuropsychologia.2009.03.014</ELocationID><Abstract><AbstractText>Previous studies have shown that blind subjects may outperform the sighted on certain tactile discrimination tasks. We recently showed that blind subjects outperformed the sighted in a haptic 2D-angle discrimination task. The purpose of this study was to compare the performance of the same blind (n=16) and sighted (n=17, G1) subjects in three tactile discrimination tasks dependent solely on cutaneous inputs from the fingertip of the index finger, D2. A second group of sighted subjects (n=30, G2) were also tested. Texture discrimination thresholds were 0.62 (G1)-0.80 mm (G2) for the sighted subjects, and 0.64 mm for the blind (standard, 2mm spatial period). Grating orientation thresholds were 0.99 (G1)-1.12 mm (G2) for the sighted subjects, and 0.96 mm for the blind. Finally, vibrotactile frequency discrimination thresholds (100 Hz standard) were 19.5 (G2) and 20.0 Hz (G1) for the sighted, and 16.5 Hz for the blind subjects. There were no significant differences in performance between the blind and the sighted subjects for the grating orientation or vibrotactile frequency discrimination tasks. In contrast, blind subjects outperformed the sighted for the texture discrimination task (G2 only), possibly reflecting the fact that the raised dot surfaces were similar to the dots forming Braille characters (all were fluent Braille readers).</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Alary</LastName><ForeName>Flamine</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>Département de Psychologie, Centre de Recherche en Neuropsychologie et Cognition, Université de Montréal, Succ Centre-Ville, Montréal, QC, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Duquette</LastName><ForeName>Marco</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Goldstein</LastName><ForeName>Rachel</ForeName><Initials>R</Initials></Author><Author ValidYN="Y"><LastName>Elaine Chapman</LastName><ForeName>C</ForeName><Initials>C</Initials></Author><Author ValidYN="Y"><LastName>Voss</LastName><ForeName>Patrice</ForeName><Initials>P</Initials></Author><Author ValidYN="Y"><LastName>La Buissonnière-Ariza</LastName><ForeName>Valérie</ForeName><Initials>V</Initials></Author><Author ValidYN="Y"><LastName>Lepore</LastName><ForeName>Franco</ForeName><Initials>F</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><ArticleDate DateType="Electronic"><Year>2009</Year><Month>03</Month><Day>24</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Neuropsychologia</MedlineTA><NlmUniqueID>0020713</NlmUniqueID><ISSNLinking>0028-3932</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" 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UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008027">Light</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008875">Middle Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009483">Neuropsychological Tests</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D009949">Orientation</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000502">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D010775">Photic Stimulation</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011601">Psychophysics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011930">Reaction Time</DescriptorName><QualifierName MajorTopicYN="N" 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