Testing the role of expansion in the prospective control of locomotion. - Inserm - Institut national de la santé et de la recherche médicale Accéder directement au contenu
Article Dans Une Revue Experimental Brain Research Année : 2008

Testing the role of expansion in the prospective control of locomotion.

Résumé

The constant bearing angle (CBA) strategy is a prospective strategy that permits the interception of moving objects. The purpose of the present study is to test this strategy. Participants were asked to walk through a virtual environment and to change, if necessary, their walking speed so as to intercept approaching targets. The targets followed either a rectilinear or a curvilinear trajectory and target size was manipulated both within trials (target size was gradually changed during the trial in order to bias expansion) and between trials (targets of different sizes were used). The curvature manipulation had a large effect on the kinematics of walking, which is in agreement with the CBA strategy. The target size manipulations also affected the kinematics of walking. Although these effects of target size are not predicted by the CBA strategy, quantitative comparisons of observed kinematics and the kinematics predicted by the CBA strategy showed good fits. Furthermore, predictions based on the CBA strategy were deemed superior to predictions based on a required velocity (V (REQ)) model. The role of target size and expansion in the prospective control of walking is discussed.
Fichier sous embargo
Fichier sous embargo
Date de visibilité indéterminée
Loading...

Dates et versions

inserm-00410933 , version 1 (11-01-2010)

Identifiants

Citer

Julien Bastin, David M. Jacobs, Antoine H. P. Morice, Cathy Craig, Gilles Montagne. Testing the role of expansion in the prospective control of locomotion.. Experimental Brain Research, 2008, 191 (3), pp.301-12. ⟨10.1007/s00221-008-1522-6⟩. ⟨inserm-00410933⟩
72 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More