The structure of frontoparallel haptic space is task dependent.
Identifieur interne : 005D30 ( Main/Merge ); précédent : 005D29; suivant : 005D31The structure of frontoparallel haptic space is task dependent.
Auteurs : Frouke Hermens [Pays-Bas] ; Astrid M L. Kappers ; Stan C A M. GielenSource :
- Perception & psychophysics [ 0031-5117 ] ; 2006.
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Abstract
In three experiments, we investigated the structure of frontoparallel haptic space. In the first experiment, we asked blindfolded participants to rotate a matching bar so that it felt parallel to the reference bar, the bars could be at various positions in the frontoparallel plane. Large systematic errors were observed, in which orientations that were perceived to be parallel were not physically parallel. In two subsequent experiments, we investigated the origin of these errors. In Experiment 2, we asked participants to verbally report the orientation of haptically presented bars. In this task, participants made errors that were considerably smaller than those made in Experiment 1. In Experiment 3, we asked participants to set bars in a verbally instructed orientation, and they also made errors significantly smaller than those observed in Experiment 1. The data suggest that the errors in the matching task originate from the transfer of the reference orientation to the matching-bar position.
PubMed: 16617830
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