CHAOS LEVEL INVESTIGATION OF CENTRE-OF-PRESSURE SINGLE-STEP DISPLACEMENT IN STATIC AND DYNAMIC VISUAL CONDITIONS

Lili Pei, Shujia Qin, Wei Ding, Lei Miao, Hongyi Li

Abstract

As a convenient and feasible measure of postural control, centre-of-pressure (CoP) trajectories are investigated in most of postural research. The characteristics extracted from CoP trajectories provide valuable evidences in nature explorations of postural control. In this research, Shannon entropy is introduced into CoP trajectories analysis to reveal random characteristics of human upright postural control. In our Shannon entropy analysis, chaos level of CoP single-step displacement is inspected in static and dynamic visual conditions. Experimental results from twenty-one subjects under four visual conditions indicate that human postural control in upright stance appears more regulated in direction control than in amplitude control. This conclusion has specific significance in postural experiment design and postural control improvement.

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Paper Citation


in Harvard Style

Pei L., Qin S., Ding W., Miao L. and Li H. (2011). CHAOS LEVEL INVESTIGATION OF CENTRE-OF-PRESSURE SINGLE-STEP DISPLACEMENT IN STATIC AND DYNAMIC VISUAL CONDITIONS . In Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms - Volume 1: BIOINFORMATICS, (BIOSTEC 2011) ISBN 978-989-8425-36-2, pages 262-265. DOI: 10.5220/0003126702620265


in Bibtex Style

@conference{bioinformatics11,
author={Lili Pei and Shujia Qin and Wei Ding and Lei Miao and Hongyi Li},
title={CHAOS LEVEL INVESTIGATION OF CENTRE-OF-PRESSURE SINGLE-STEP DISPLACEMENT IN STATIC AND DYNAMIC VISUAL CONDITIONS},
booktitle={Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms - Volume 1: BIOINFORMATICS, (BIOSTEC 2011)},
year={2011},
pages={262-265},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003126702620265},
isbn={978-989-8425-36-2},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms - Volume 1: BIOINFORMATICS, (BIOSTEC 2011)
TI - CHAOS LEVEL INVESTIGATION OF CENTRE-OF-PRESSURE SINGLE-STEP DISPLACEMENT IN STATIC AND DYNAMIC VISUAL CONDITIONS
SN - 978-989-8425-36-2
AU - Pei L.
AU - Qin S.
AU - Ding W.
AU - Miao L.
AU - Li H.
PY - 2011
SP - 262
EP - 265
DO - 10.5220/0003126702620265