Roberts, J, Wakefield, C and De Grosbois, J (2024) Examining the equivalence between imagery and execution – Does imagery comprise the intended spatial trajectory? Journal of Motor Behavior. ISSN 0022-2895

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Abstract

The functional equivalence model suggests a common internal representation initiates both imagery and execution. This suggestion is supported by the mental chronometry effect, where there is a positive relation between task difficulty (as defined by the Index of Difficulty; ID) and imagined movement time. The present study extends this logic by examining whether imagery captures the spatial trajectory. Participants were initially tasked with the imagery and execution of a rapid aiming movement under different IDs. These initial attempts were adapted to configure auditory tones at early (25%) and late (75%) intervals for a separate set of imagery trials. If a tone had sounded, participants had to estimate post-trial where their imagined limb would have been located. The findings revealed increases in ID that coincided with increases in imagined and executed movement times. However, participant mean and standard deviation of estimated locations revealed limited differences between the early and late tones. Further inspection revealed some evidence for these estimated locations shifting further along in space following more rapid imagined movements. While equivalence is clearly evident within the temporal domain, there is comparatively little to suggest that this logic extends to the resolution required for simulating the spatial characteristics of movement.

Item Type:	Article
Uncontrolled Keywords:	1106 Human Movement and Sports Sciences; 1702 Cognitive Sciences; Experimental Psychology
Subjects:	R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions:	Sport and Exercise Sciences
Publisher:	Taylor and Francis Group
SWORD Depositor:	A Symplectic
Date Deposited:	19 Sep 2024 09:51
Last Modified:	02 Oct 2024 11:15
DOI or ID number:	10.1080/00222895.2024.2406925
URI:	https://researchonline.ljmu.ac.uk/id/eprint/24174

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