Considerations on the application of the chaos paradigm to describe the postural sway

TitoloConsiderations on the application of the chaos paradigm to describe the postural sway
Publication TypeJournal Article
Year of Publication2006
AuthorsPascolo PB, Barazza F, Carniel R
JournalChaos, Solitons and Fractals
Volume27
Pagination1339-1346
Abstract

Time-series of statokinesigram (SKG) of healthy subjects and parkinsonians are investigated and compared. This is done by employing the chaos paradigm in order to obtain the main characteristics of the SKG. The interpretation of our findings is twofold:when a proper Theiler window is not used we find a virtual invariance of the chaos parameters when healthy subjects and parkinsonians are compared but a discrepancy of our values (correlation dimension equals to 1.4) with those found in previous works;when a proper Theiler window is used (more) appropriately, the SKGs do not show a convergence of the fractal dimension estimates; therefore nothing can be said in terms of chaoticity of system. © 2005 Elsevier Ltd. All rights reserved.

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