A surrogate technique for investigating deterministic dynamics in discrete human movement
Taylor, Paul G., Small, Michael, Lee, Kwee-Yum, Landeo, Raul, O'Meara, Damien M. and Millett, Emma L.. (2016) A surrogate technique for investigating deterministic dynamics in discrete human movement. Motor Control. 20(4), pp. 459 - 470. https://doi.org/10.1123/mc.2015-0043
|Authors||Taylor, Paul G., Small, Michael, Lee, Kwee-Yum, Landeo, Raul, O'Meara, Damien M. and Millett, Emma L.|
Entropy is an effective tool for investigation of human movement variability. However, before applying entropy, it can be beneficial to employ analyses to confirm that observed data are not solely the result of stochastic processes. This can be achieved by contrasting observed data with that produced using surrogate methods. Unlike continuous movement, no appropriate method has been applied to discrete human movement. This article proposes a novel surrogate method for discrete movement data, outlining the processes for determining its critical values. The proposed technique reliably generated surrogates for discrete joint angle time series, destroying fine-scale dynamics of the observed signal, while maintaining macro structural characteristics. Comparison of entropy estimates indicated observed signals had greater regularity than surrogates and were not only the result of stochastic but also deterministic processes. The proposed surrogate method is both a valid and reliable technique to investigate determinism in other discrete human movement time series.
|Journal citation||20 (4), pp. 459 - 470|
|Publisher||Human Kinetics Publishers Inc.|
|Digital Object Identifier (DOI)||https://doi.org/10.1123/mc.2015-0043|
|Open access||Published as green open access|
|Page range||459 - 470|
|Research Group||Sports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre|
|Author's accepted manuscript|
File Access Level
Authors accepted manuscript - as accepted for publication. © 2016 Human Kinetics, Inc.
|Place of publication||United States of America|
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