Temporal information for spatially constrained locomotion
Exp Brain Res. 2002-07-25; 146(2): 129-141
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1. Exp Brain Res. 2002 Sep;146(2):129-41. Epub 2002 Jul 25.
Temporal information for spatially constrained locomotion.
de Rugy A(1), Montagne G, Buekers MJ, Laurent M.
(1)UMR Mouvement et Perception, CNRS et Université de la Méditerranée, Marseille,
How is locomotion adapted to spatial environmental constraints? The control of
this everyday behavior is claimed to be based on information that specifies
either spatial or temporal properties of the actor-environment system. Although
studies on open-loop locomotor pointing (i.e., the positioning of a foot on a
target on the floor while walking) agree on the use of spatial information,
studies on closed-loop locomotor pointing propose the use of temporal
information. Here, we test the hypothesis of closed-loop locomotor pointing based
on temporal information, by dissociating spatial and temporal information in a
virtual reality setup (virtual environment connected to a treadmill). The results
support this hypothesis and shed some light on the type of temporal information
that is used. The performed dissociation between spatial and temporal
information, however, does not rule out a control based on a continuous updating
of spatial information. Therefore, our conclusion on the use of temporal
information was moderated.
PMID: 12195515 [Indexed for MEDLINE]