HapticV1, PascalFrancis, Corpus, bibRecord, 000764

Tactile acuity in the blind: A closer look reveals superiority over the sighted in some but not all cutaneous tasks

Identifieur interne : 000764 ( PascalFrancis/Corpus ); précédent : 000763; suivant : 000765

Tactile 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 Buissonniere-Ariza ; Franco Lepore

Source :

Neuropsychologia [ 0028-3932 ] ; 2009.

RBID : Pascal:09-0328332

Descripteurs français

Pascal (Inist)
- Sensibilité tactile, Psychophysique, Cécité, Homme.

English descriptors

KwdEn :
- Blindness, Human, Psychophysics, Tactile sensitivity.

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 (Gl)-0.80mm (G2) for the sighted subjects, and 0.64mm 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).

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A08	`01`	`1`	`ENG`	`@1 Tactile acuity in the blind: A closer look reveals superiority over the sighted in some but not all cutaneous tasks`
A11	`01`	`1`		`@1 ALARY (Flamine)`
A11	`02`	`1`		`@1 DUQUETTE (Marco)`
A11	`03`	`1`		`@1 GOLDSTEIN (Rachel)`
A11	`04`	`1`		`@1 CHAPMAN (C. Elaine)`
A11	`05`	`1`		`@1 VOSS (Patrice)`
A11	`06`	`1`		`@1 LA BUISSONNIERE-ARIZA (Valérie)`
A11	`07`	`1`		`@1 LEPORE (Franco)`
A14	`01`			`@1 Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Succ. Centre-Ville @2 Montréal, QC, H3C 3J7 @3 CAN @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 5 aut. @Z 6 aut. @Z 7 aut.`
A14	`02`			`@1 Groupe de Recherche sur le Système Nerveux Central, Département de Physiologie, Faculté de Médecine, Université de Montréal, CP 6128, Succ. Centre-Ville @2 Montréal, QC, H3C 3J7 @3 CAN @Z 4 aut.`
A20				`@1 2037-2043`
A21				`@1 2009`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 11143 @5 354000187978200030`
A44				`@0 0000 @1 © 2009 INIST-CNRS. All rights reserved.`
A45				`@0 3/4 p.`
A47	`01`	`1`		`@0 09-0328332`
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A61				`@0 A`
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C01	`01`		`ENG`	@0 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 (Gl)-0.80mm (G2) for the sighted subjects, and 0.64mm 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).
C02	`01`	`X`		`@0 002A26N04`
C02	`02`	`X`		`@0 002A26E05`
C03	`01`	`X`	`FRE`	`@0 Sensibilité tactile @5 01`
C03	`01`	`X`	`ENG`	`@0 Tactile sensitivity @5 01`
C03	`01`	`X`	`SPA`	`@0 Sensibilidad tactil @5 01`
C03	`02`	`X`	`FRE`	`@0 Psychophysique @5 02`
C03	`02`	`X`	`ENG`	`@0 Psychophysics @5 02`
C03	`02`	`X`	`SPA`	`@0 Psicofísica @5 02`
C03	`03`	`X`	`FRE`	`@0 Cécité @5 03`
C03	`03`	`X`	`ENG`	`@0 Blindness @5 03`
C03	`03`	`X`	`SPA`	`@0 Ceguera @5 03`
C03	`04`	`X`	`FRE`	`@0 Homme @5 18`
C03	`04`	`X`	`ENG`	`@0 Human @5 18`
C03	`04`	`X`	`SPA`	`@0 Hombre @5 18`
C07	`01`	`X`	`FRE`	`@0 Perception @5 37`
C07	`01`	`X`	`ENG`	`@0 Perception @5 37`
C07	`01`	`X`	`SPA`	`@0 Percepción @5 37`
C07	`02`	`X`	`FRE`	`@0 Pathologie de l'oeil @5 38`
C07	`02`	`X`	`ENG`	`@0 Eye disease @5 38`
C07	`02`	`X`	`SPA`	`@0 Ojo patología @5 38`
C07	`03`	`X`	`FRE`	`@0 Trouble de la vision @5 39`
C07	`03`	`X`	`ENG`	`@0 Vision disorder @5 39`
C07	`03`	`X`	`SPA`	`@0 Trastorno visión @5 39`
N21				`@1 236`

Format Inist (serveur)

NO :	PASCAL 09-0328332 INIST
ET :	Tactile acuity in the blind: A closer look reveals superiority over the sighted in some but not all cutaneous tasks
AU :	ALARY (Flamine); DUQUETTE (Marco); GOLDSTEIN (Rachel); CHAPMAN (C. Elaine); VOSS (Patrice); LA BUISSONNIERE-ARIZA (Valérie); LEPORE (Franco)
AF :	Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Succ. Centre-Ville/Montréal, QC, H3C 3J7/Canada (1 aut., 2 aut., 3 aut., 5 aut., 6 aut., 7 aut.); Groupe de Recherche sur le Système Nerveux Central, Département de Physiologie, Faculté de Médecine, Université de Montréal, CP 6128, Succ. Centre-Ville/Montréal, QC, H3C 3J7/Canada (4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Neuropsychologia; ISSN 0028-3932; Coden NUPSA6; Royaume-Uni; Da. 2009; Vol. 47; No. 10; Pp. 2037-2043; Bibl. 3/4 p.
LA :	Anglais
EA :	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 (Gl)-0.80mm (G2) for the sighted subjects, and 0.64mm 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).
CC :	002A26N04; 002A26E05
FD :	Sensibilité tactile; Psychophysique; Cécité; Homme
FG :	Perception; Pathologie de l'oeil; Trouble de la vision
ED :	Tactile sensitivity; Psychophysics; Blindness; Human
EG :	Perception; Eye disease; Vision disorder
SD :	Sensibilidad tactil; Psicofísica; Ceguera; Hombre
LO :	INIST-11143.354000187978200030
ID :	09-0328332

Links to Exploration step

Pascal:09-0328332

Le document en format XML

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<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 (Gl)-0.80mm (G2) for the sighted subjects, and 0.64mm 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>
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<fA11 i1="01" i2="1"><s1>ALARY (Flamine)</s1>
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<fA11 i1="02" i2="1"><s1>DUQUETTE (Marco)</s1>
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<fA14 i1="01"><s1>Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Succ. Centre-Ville</s1>
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<ET>Tactile acuity in the blind: A closer look reveals superiority over the sighted in some but not all cutaneous tasks</ET>
<AU>ALARY (Flamine); DUQUETTE (Marco); GOLDSTEIN (Rachel); CHAPMAN (C. Elaine); VOSS (Patrice); LA BUISSONNIERE-ARIZA (Valérie); LEPORE (Franco)</AU>
<AF>Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Succ. Centre-Ville/Montréal, QC, H3C 3J7/Canada (1 aut., 2 aut., 3 aut., 5 aut., 6 aut., 7 aut.); Groupe de Recherche sur le Système Nerveux Central, Département de Physiologie, Faculté de Médecine, Université de Montréal, CP 6128, Succ. Centre-Ville/Montréal, QC, H3C 3J7/Canada (4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Neuropsychologia; ISSN 0028-3932; Coden NUPSA6; Royaume-Uni; Da. 2009; Vol. 47; No. 10; Pp. 2037-2043; Bibl. 3/4 p.</SO>
<LA>Anglais</LA>
<EA>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 (Gl)-0.80mm (G2) for the sighted subjects, and 0.64mm 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).</EA>
<CC>002A26N04; 002A26E05</CC>
<FD>Sensibilité tactile; Psychophysique; Cécité; Homme</FD>
<FG>Perception; Pathologie de l'oeil; Trouble de la vision</FG>
<ED>Tactile sensitivity; Psychophysics; Blindness; Human</ED>
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Tactile acuity in the blind: A closer look reveals superiority over the sighted in some but not all cutaneous tasks

Tactile acuity in the blind: A closer look reveals superiority over the sighted in some but not all cutaneous tasks

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