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Frequency Distributions of Target-Directed Movements: Examining Spatial Variability in Its Wider Context

Roberts, JW (2019) Frequency Distributions of Target-Directed Movements: Examining Spatial Variability in Its Wider Context. Motor Control, 23 (4). pp. 485-497. ISSN 1087-1640

Frequency Distributions of Target-Directed Movements Examining Spatial Variability in Its Wider Context.pdf - Accepted Version

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Investigations of visually guided target-directed movement frequently adopt measures of within-participant spatial variability to infer the contribution of planning and control. The present study aims to verify this current trend by exploring the distribution of displacements at kinematic landmarks with a view to understand the potential sources of variability. Separate sets of participants aiming under full visual feedback conditions revealed a comparatively normal distribution for the displacements at peak velocity and movement end. However, there was demonstrable positive skew in the displacement at peak acceleration and a significant negative skew at peak deceleration. The ranges of the distributions as defined by either ±1SD or ±34.13th percentile (equivalent to an estimated 68.26% of responses) also revealed differences at peak deceleration. These findings indicate that spatial variability in the acceleration domain features highly informative systematic, as well as merely inherent, sources of variability. Implications for the further quantification of trial-by-trial behavior are discussed.

Item Type: Article
Additional Information: Accepted author manuscript version reprinted, by permission, from [Motor Control, 2018, 23(4): 485-497pp-pp, https://doi.org/10.1123/mc.2018-0077. © Human Kinetics, Inc.
Uncontrolled Keywords: 1106 Human Movement and Sports Sciences
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: Human Kinetics
Related URLs:
Date Deposited: 28 Jan 2020 12:16
Last Modified: 04 Sep 2021 08:03
DOI or ID number: 10.1123/mc.2018-0077
URI: https://researchonline.ljmu.ac.uk/id/eprint/12115
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