HapticV1, PascalFrancis, Corpus, bibRecord, 000949

Tactile acuity in the blind : a psychophysical study using a two-dimensional angle discrimination task

Identifieur interne : 000949 ( PascalFrancis/Corpus ); précédent : 000948; suivant : 000950

Tactile acuity in the blind : a psychophysical study using a two-dimensional angle discrimination task

Auteurs : Flamine Alary ; Rachel Goldstein ; Marco Duquette ; C. Elaine Chapman ; Patrice Voss ; Franco Lepore

Source :

Experimental brain research [ 0014-4819 ] ; 2008.

RBID : Pascal:08-0301505

Descripteurs français

Pascal (Inist)
- Tâche discrimination, Proprioception, Stratégie, Articulation, Epaule, Poignet, Homme, Perception haptique.

English descriptors

KwdEn :
- Discrimination task, Haptic perception, Human, Joint, Proprioception, Shoulder, Strategy, Wrist.

Abstract

Growing evidence suggests that blind subjects outperform the sighted on certain tactile discrimination tasks depending on cutaneous inputs. The purpose of this study was to compare the performance of blind (n = 14) and sighted (n = 15) subjects in a haptic angle discrimination task, depending on both cutaneous and proprioceptive feedback. Subjects actively scanned their right index finger over pairs of two-dimensional (2-D) angles (standard 90°; comparison 91-103°), identifying the larger one. Two exploratory strategies were tested: arm straight or arm flexed at the elbow so that joint movement was, respectively, mainly proximal (shoulder) or distal (wrist, finger). The mean discrimination thresholds for the sighted subjects (vision occluded) were similar for both exploratory strategies (5.7 and 5.8°, respectively). Exploratory strategy likewise did not modify threshold in the blind subjects (proximal 4.3°; distal 4.9°), but thresholds were on average lower than for the sighted subjects. A between-group comparison indicated that blind subjects had significantly lower thresholds than did the sighted subjects, but only for the proximal condition. The superior performance of the blind subjects likely represents heightened sensitivity to haptic inputs in response to visual deprivation, which, in these subjects, occurred prior to 14 years of age.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11	`01`	`1`		`@1 ALARY (Flamine)`
A11	`02`	`1`		`@1 GOLDSTEIN (Rachel)`
A11	`03`	`1`		`@1 DUQUETTE (Marco)`
A11	`04`	`1`		`@1 CHAPMAN (C. Elaine)`
A11	`05`	`1`		`@1 VOSS (Patrice)`
A11	`06`	`1`		`@1 LEPORE (Franco)`
A14	`01`			`@1 Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Suce. Centre-Ville @2 Montreal, QC H3C 3J7 @3 CAN @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 5 aut. @Z 6 aut.`
A14	`02`			`@1 Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Université de Montréal @2 Montreal @3 CAN @Z 4 aut.`
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A21				`@1 2008`
A23	`01`			`@0 ENG`
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A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Experimental brain research`
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C01	`01`		`ENG`	@0 Growing evidence suggests that blind subjects outperform the sighted on certain tactile discrimination tasks depending on cutaneous inputs. The purpose of this study was to compare the performance of blind (n = 14) and sighted (n = 15) subjects in a haptic angle discrimination task, depending on both cutaneous and proprioceptive feedback. Subjects actively scanned their right index finger over pairs of two-dimensional (2-D) angles (standard 90°; comparison 91-103°), identifying the larger one. Two exploratory strategies were tested: arm straight or arm flexed at the elbow so that joint movement was, respectively, mainly proximal (shoulder) or distal (wrist, finger). The mean discrimination thresholds for the sighted subjects (vision occluded) were similar for both exploratory strategies (5.7 and 5.8°, respectively). Exploratory strategy likewise did not modify threshold in the blind subjects (proximal 4.3°; distal 4.9°), but thresholds were on average lower than for the sighted subjects. A between-group comparison indicated that blind subjects had significantly lower thresholds than did the sighted subjects, but only for the proximal condition. The superior performance of the blind subjects likely represents heightened sensitivity to haptic inputs in response to visual deprivation, which, in these subjects, occurred prior to 14 years of age.
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C03	`05`	`X`	`FRE`	`@0 Epaule @5 05`
C03	`05`	`X`	`ENG`	`@0 Shoulder @5 05`
C03	`05`	`X`	`SPA`	`@0 Hombro @5 05`
C03	`06`	`X`	`FRE`	`@0 Poignet @5 06`
C03	`06`	`X`	`ENG`	`@0 Wrist @5 06`
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C03	`07`	`X`	`FRE`	`@0 Homme @5 54`
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C03	`08`	`X`	`FRE`	`@0 Perception haptique @4 CD @5 96`
C03	`08`	`X`	`ENG`	`@0 Haptic perception @4 CD @5 96`
C07	`01`	`X`	`FRE`	`@0 Système ostéoarticulaire @5 20`
C07	`01`	`X`	`ENG`	`@0 Osteoarticular system @5 20`
C07	`01`	`X`	`SPA`	`@0 Sistema osteoarticular @5 20`
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N44	`01`			`@1 OTO`
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Format Inist (serveur)

NO :	PASCAL 08-0301505 INIST
ET :	Tactile acuity in the blind : a psychophysical study using a two-dimensional angle discrimination task
AU :	ALARY (Flamine); GOLDSTEIN (Rachel); DUQUETTE (Marco); CHAPMAN (C. Elaine); VOSS (Patrice); LEPORE (Franco)
AF :	Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Suce. Centre-Ville/Montreal, QC H3C 3J7/Canada (1 aut., 2 aut., 3 aut., 5 aut., 6 aut.); Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Université de Montréal/Montreal/Canada (4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Experimental brain research; ISSN 0014-4819; Coden EXBRAP; Allemagne; Da. 2008; Vol. 187; No. 4; Pp. 587-594; Bibl. 3/4 p.
LA :	Anglais
EA :	Growing evidence suggests that blind subjects outperform the sighted on certain tactile discrimination tasks depending on cutaneous inputs. The purpose of this study was to compare the performance of blind (n = 14) and sighted (n = 15) subjects in a haptic angle discrimination task, depending on both cutaneous and proprioceptive feedback. Subjects actively scanned their right index finger over pairs of two-dimensional (2-D) angles (standard 90°; comparison 91-103°), identifying the larger one. Two exploratory strategies were tested: arm straight or arm flexed at the elbow so that joint movement was, respectively, mainly proximal (shoulder) or distal (wrist, finger). The mean discrimination thresholds for the sighted subjects (vision occluded) were similar for both exploratory strategies (5.7 and 5.8°, respectively). Exploratory strategy likewise did not modify threshold in the blind subjects (proximal 4.3°; distal 4.9°), but thresholds were on average lower than for the sighted subjects. A between-group comparison indicated that blind subjects had significantly lower thresholds than did the sighted subjects, but only for the proximal condition. The superior performance of the blind subjects likely represents heightened sensitivity to haptic inputs in response to visual deprivation, which, in these subjects, occurred prior to 14 years of age.
CC :	002A25E; 002A26E07
FD :	Tâche discrimination; Proprioception; Stratégie; Articulation; Epaule; Poignet; Homme; Perception haptique
FG :	Système ostéoarticulaire
ED :	Discrimination task; Proprioception; Strategy; Joint; Shoulder; Wrist; Human; Haptic perception
EG :	Osteoarticular system
SD :	Tarea discriminatoria; Propiocepción; Estrategia; Articulación; Hombro; Muñeca; Hombre
LO :	INIST-12535.354000197825080080
ID :	08-0301505

Links to Exploration step

Pascal:08-0301505

Le document en format XML

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<front><div type="abstract" xml:lang="en">Growing evidence suggests that blind subjects outperform the sighted on certain tactile discrimination tasks depending on cutaneous inputs. The purpose of this study was to compare the performance of blind (n = 14) and sighted (n = 15) subjects in a haptic angle discrimination task, depending on both cutaneous and proprioceptive feedback. Subjects actively scanned their right index finger over pairs of two-dimensional (2-D) angles (standard 90°; comparison 91-103°), identifying the larger one. Two exploratory strategies were tested: arm straight or arm flexed at the elbow so that joint movement was, respectively, mainly proximal (shoulder) or distal (wrist, finger). The mean discrimination thresholds for the sighted subjects (vision occluded) were similar for both exploratory strategies (5.7 and 5.8°, respectively). Exploratory strategy likewise did not modify threshold in the blind subjects (proximal 4.3°; distal 4.9°), but thresholds were on average lower than for the sighted subjects. A between-group comparison indicated that blind subjects had significantly lower thresholds than did the sighted subjects, but only for the proximal condition. The superior performance of the blind subjects likely represents heightened sensitivity to haptic inputs in response to visual deprivation, which, in these subjects, occurred prior to 14 years of age.</div>
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<fC03 i1="02" i2="X" l="ENG"><s0>Proprioception</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Propiocepción</s0>
<s5>02</s5>
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<s5>03</s5>
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<fC03 i1="03" i2="X" l="SPA"><s0>Estrategia</s0>
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<s5>04</s5>
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<fC03 i1="04" i2="X" l="ENG"><s0>Joint</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Articulación</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Epaule</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Shoulder</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Hombro</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Poignet</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Wrist</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Muñeca</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Homme</s0>
<s5>54</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Human</s0>
<s5>54</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Hombre</s0>
<s5>54</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Perception haptique</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Haptic perception</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Système ostéoarticulaire</s0>
<s5>20</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Osteoarticular system</s0>
<s5>20</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Sistema osteoarticular</s0>
<s5>20</s5>
</fC07>
<fN21><s1>189</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
<server><NO>PASCAL 08-0301505 INIST</NO>
<ET>Tactile acuity in the blind : a psychophysical study using a two-dimensional angle discrimination task</ET>
<AU>ALARY (Flamine); GOLDSTEIN (Rachel); DUQUETTE (Marco); CHAPMAN (C. Elaine); VOSS (Patrice); LEPORE (Franco)</AU>
<AF>Centre de Recherche en Neuropsychologie et Cognition (CERNEC), Département de Psychologie, Université de Montréal, CP 6128, Suce. Centre-Ville/Montreal, QC H3C 3J7/Canada (1 aut., 2 aut., 3 aut., 5 aut., 6 aut.); Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Université de Montréal/Montreal/Canada (4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Experimental brain research; ISSN 0014-4819; Coden EXBRAP; Allemagne; Da. 2008; Vol. 187; No. 4; Pp. 587-594; Bibl. 3/4 p.</SO>
<LA>Anglais</LA>
<EA>Growing evidence suggests that blind subjects outperform the sighted on certain tactile discrimination tasks depending on cutaneous inputs. The purpose of this study was to compare the performance of blind (n = 14) and sighted (n = 15) subjects in a haptic angle discrimination task, depending on both cutaneous and proprioceptive feedback. Subjects actively scanned their right index finger over pairs of two-dimensional (2-D) angles (standard 90°; comparison 91-103°), identifying the larger one. Two exploratory strategies were tested: arm straight or arm flexed at the elbow so that joint movement was, respectively, mainly proximal (shoulder) or distal (wrist, finger). The mean discrimination thresholds for the sighted subjects (vision occluded) were similar for both exploratory strategies (5.7 and 5.8°, respectively). Exploratory strategy likewise did not modify threshold in the blind subjects (proximal 4.3°; distal 4.9°), but thresholds were on average lower than for the sighted subjects. A between-group comparison indicated that blind subjects had significantly lower thresholds than did the sighted subjects, but only for the proximal condition. The superior performance of the blind subjects likely represents heightened sensitivity to haptic inputs in response to visual deprivation, which, in these subjects, occurred prior to 14 years of age.</EA>
<CC>002A25E; 002A26E07</CC>
<FD>Tâche discrimination; Proprioception; Stratégie; Articulation; Epaule; Poignet; Homme; Perception haptique</FD>
<FG>Système ostéoarticulaire</FG>
<ED>Discrimination task; Proprioception; Strategy; Joint; Shoulder; Wrist; Human; Haptic perception</ED>
<EG>Osteoarticular system</EG>
<SD>Tarea discriminatoria; Propiocepción; Estrategia; Articulación; Hombro; Muñeca; Hombre</SD>
<LO>INIST-12535.354000197825080080</LO>
<ID>08-0301505</ID>
</server>
</inist>
</record>

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Tactile acuity in the blind : a psychophysical study using a two-dimensional angle discrimination task

Tactile acuity in the blind : a psychophysical study using a two-dimensional angle discrimination task

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