HapticV1, Main, Exploration, bibRecordById, pubmed:14992425

Spatial reference and scanning with the left and right hand

Identifieur interne : 006F81 ( Main/Exploration ); précédent : 006F80; suivant : 006F82

Spatial reference and scanning with the left and right hand

Auteurs : Susanna Millar [Royaume-Uni] ; Zainab Al-Attar [Royaume-Uni]

Source :

Perception : (London. Print) [ 0301-0066 ] ; 2003.

RBID : Pascal:04-0143686

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Sensibilité tactile, Activité manuelle, Perception espace, Distance, Cognition, Perception, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adolescent, Adult, Cognition, Cues, Distance, Distance Perception (physiology), Experimental study, Female, Functional Laterality, Human, Humans, Male, Manual activity, Mental Recall, Perception, Psychomotor Performance, Space perception, Tactile sensitivity, Touch (physiology).
MESH :
- physiology : Distance Perception, Touch.
- Adolescent, Adult, Cues, Female, Functional Laterality, Humans, Male, Mental Recall, Psychomotor Performance.

Abstract

Discrepant findings on performance by the two hands in spatial tasks make it difficult to infer spatial coding unambiguously. We tested the hypotheses (a) that the left hand is consistently better in haptic spatial tasks and (b) that adding spatial reference information produces more accurate coding in spatial tasks, independently task and hand effects. Instructions to use external cues from a surrounding frame as well as body-centred cues for reference produced highly significant increases in accuracy in haptic distance and location experiments. The distance experiments showed no hand differences. A small right-hand advantage with longer positioning movements in the recall of locations was significant when combined with left-hand scanning of the frame, but did not relate to reference conditions. Hand use interacted significantly with the location-versus-distance experiments, but showed no interaction with the spatial reference factor, which was highly significant in both experiments. The finding suggests that modes of coding need to be distinguished from cross-lateral effects of sensory input conditions. The study shows that varying reference information offers a potentially useful behavioural tool for distinguishing spatial coding from input and task conditions independently of hand performance. Methodological, practical, and theoretical implications are discussed.

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Discrepant findings on performance by the two hands in spatial tasks make it difficult to infer spatial coding unambiguously. We tested the hypotheses (a) that the left hand is consistently better in haptic spatial tasks and (b) that adding spatial reference information produces more accurate coding in spatial tasks, independently task and hand effects. Instructions to use external cues from a surrounding frame as well as body-centred cues for reference produced highly significant increases in accuracy in haptic distance and location experiments. The distance experiments showed no hand differences. A small right-hand advantage with longer positioning movements in the recall of locations was significant when combined with left-hand scanning of the frame, but did not relate to reference conditions. Hand use interacted significantly with the location-versus-distance experiments, but showed no interaction with the spatial reference factor, which was highly significant in both experiments. The finding suggests that modes of coding need to be distinguished from cross-lateral effects of sensory input conditions. The study shows that varying reference information offers a potentially useful behavioural tool for distinguishing spatial coding from input and task conditions independently of hand performance. Methodological, practical, and theoretical implications are discussed.</div>
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Spatial reference and scanning with the left and right hand

Spatial reference and scanning with the left and right hand

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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