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Active Vision during Action Execution, Observation and Imagery: Evidence for Shared Motor Representations

McCormick, SA and Causer, J and Holmes, PS (2013) Active Vision during Action Execution, Observation and Imagery: Evidence for Shared Motor Representations. PLoS One, 8 (6). ISSN 1932-6203

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Abstract

The concept of shared motor representations between action execution and various covert conditions has been demonstrated through a number of psychophysiological modalities over the past two decades. Rarely, however, have
researchers considered the congruence of physical, imaginary and observed movement markers in a single paradigm and never in a design where eye movement metrics are the markers. In this study, participants were required to perform a forward reach and point Fitts’ Task on a digitizing tablet whilst wearing an eye movement system. Gaze metrics were used to compare behaviour congruence between action execution, action observation, and guided and unguided movement imagery conditions. The data showed that participants attended the same task-related visual cues between conditions but the strategy was different. Specifically, the number of fixations was significantly different between action execution and all covert conditions. In addition, fixation duration was congruent between action execution and action observation only, and
both conditions displayed an indirect Fitts’ Law effect. We therefore extend the understanding of the common motor representation by demonstrating, for the first time, common spatial eye movement metrics across simulation conditions
and some specific temporal congruence for action execution and action observation. Our findings suggest that action
observation may be an effective technique in supporting motor processes. The use of video as an adjunct to physical
techniques may be beneficial in supporting motor planning in both performance and clinical rehabilitation environments.

Item Type: Article
Uncontrolled Keywords: MD Multidisciplinary
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: Public Library of Science
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Date Deposited: 24 Jun 2015 09:20
Last Modified: 12 Sep 2017 06:17
DOI or Identification number: 10.1371/journal.pone.0067761
URI: http://researchonline.ljmu.ac.uk/id/eprint/295

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