Iterative Spatial Updating During Forward Linear Walking Revealed Using a Continuous Pointing Task.

Iterative Spatial Updating During Forward Linear Walking Revealed Using a Continuous Pointing Task.
J Mot Behav. 2019 Apr 15;:1-22
Authors: Burkitt JJ, Campos JL, Lyons JL
Abstract
The continuous pointing task uses target-directed pointing responses to determine how perceived distance traveled is estimated during forward linear walking movements. To more precisely examine the regulation of this online process, the current study measured upper extremity joint angles and step-cycle kinematics in full vision and no-vision continuous pointing movements. Results show perceptual under-estimation of traveled distance in no-vision trials compared to full vision trials. Additionally, parsing of the shoulder plane of elevation trajectories revealed discontinuities that reflected this perceptual under-estimation and that were most frequently coupled with the early portion of the right foot swing phase of the step-cycle. This suggests that spatial updating may be composed of discrete iterations that are associated with gait parameters.
PMID: 30982465 [PubMed - as supplied by publisher]

Source: Journal of Motor Behavior - April 17, 2019 Category: Neurology Tags: J Mot Behav Source Type: research