Role of force cues in the haptic estimations of a virtual length
Identifieur interne : 006291 ( Main/Merge ); précédent : 006290; suivant : 006292Role of force cues in the haptic estimations of a virtual length
Auteurs : Pierre Wydoodt [France] ; Edouard Gentaz [France] ; Arlette Streri [France]Source :
- Experimental brain research [ 0014-4819 ] ; 2006.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
This study investigated whether and how the force cues play a role in the haptic perception of length. We assumed that the introduction of a dynamic disruption during haptic exploration generated by a haptic display would lead to a systematic bias in the estimation of a virtual length. Two types of "opposition" disruption ("elastic" and "viscous") were proposed in Experiments 1 and 2, and two types of "traction" disruption ("fluid" and "full") in Experiments 3 and 4. In all experiments, blindfolded adults were asked to compare two lengths of virtual rods explored with the right index. Results revealed an underestimation of the length with elastic and viscous opposition disruptions and an over-estimation of this length with fluid and full-traction disruptions. No systematic bias in the estimation was observed in the "control" sessions in which the active exploration of the segment was "normal" (i.e. not disrupted). These results suggest that the forces produced during exploratory movements are used as a relevant cue in the haptic length estimation.
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Pascal:06-0289217Le document en format XML
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xml:lang="fr"><term>Force</term><term>Estimation</term><term>Bâtonnet</term><term>Perception haptique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study investigated whether and how the force cues play a role in the haptic perception of length. We assumed that the introduction of a dynamic disruption during haptic exploration generated by a haptic display would lead to a systematic bias in the estimation of a virtual length. Two types of "opposition" disruption ("elastic" and "viscous") were proposed in Experiments 1 and 2, and two types of "traction" disruption ("fluid" and "full") in Experiments 3 and 4. In all experiments, blindfolded adults were asked to compare two lengths of virtual rods explored with the right index. Results revealed an underestimation of the length with elastic and viscous opposition disruptions and an over-estimation of this length with fluid and full-traction disruptions. No systematic bias in the estimation was observed in the "control" sessions in which the active exploration of the segment was "normal" (i.e. not disrupted). These results suggest that the forces produced during exploratory movements are used as a relevant cue in the haptic length estimation.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region><settlement><li>Grenoble</li><li>Paris</li></settlement><orgName><li>Université Pierre-Mendès-France</li></orgName></list><tree><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Wydoodt, Pierre" sort="Wydoodt, Pierre" uniqKey="Wydoodt P" first="Pierre" last="Wydoodt">Pierre Wydoodt</name></region><name sortKey="Gentaz, Edouard" sort="Gentaz, Edouard" uniqKey="Gentaz E" first="Edouard" last="Gentaz">Edouard Gentaz</name><name sortKey="Streri, Arlette" sort="Streri, Arlette" uniqKey="Streri A" first="Arlette" last="Streri">Arlette Streri</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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