Perception – Action coupling model for human locomotor pointing
Biological Cybernetics. 2002-08-01; 87(2): 141-150
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1. Biol Cybern. 2002 Aug;87(2):141-50.
Perception–action coupling model for human locomotor pointing.
de Rugy A(1), Taga G, Montagne G, Buekers MJ, Laurent M.
(1)Department of Kinesiology, The Pennsylvania State University, 266 Recreation
Building, University Park, State College, PA 16802, USA.
How do humans achieve the precise positioning of the feet during walking, for
example, to reach the first step of a stairway? We addressed this question at the
visuomotor integration level. Based on the optical specification of the required
adaptation, a dynamical system model of the visuomotor control of human locomotor
pointing was devised for the positioning of a foot on a visible target on the
floor during walking. Visuomotor integration consists of directly linking optical
information to a motor command that specifically modulates step length in
accordance with the ongoing dynamics of locomotor pattern generation. The
adaptation of locomotion emerges from a perception-action coupling type of
control based on temporal information rather than on feedforward planning of
movements. The proposed model reproduces experimental results obtained for human
PMID: 12181588 [Indexed for MEDLINE]