Predictability of posturographic signals: influence of the window width and the embedding dimension

• Autorzy: Michalak K. P. , Jaśkowski P.
• Języki publikacji: EN

Abstrakty

EN

Predictability of 120s-long posturographic signals was investigated by the method of forecasting. We used signals from 32 young healthy participants registered with both open and closed eyes. Influence of the window width and the embedding dimension on predictability was studied. Our results indicate existence of a deterministic component in the posturographic signal. Predictability decreases with the increasing window width ranging from 0.24s to 3.84s. An increase of the embedding dimension, while keeping the window width constant and an adequate decrease of the lag is proposed as a method that could better estimate the saturation dimension of the medium- and high-dimensional signals. Moreover, we have found that the signals representing swaying in the anterio-posterior direction have a higher predictability than those representing lateral swinging and that closing the eyes deteriorates predictability of the posturographic signals.

Słowa kluczowe

EN

predictability; forecasting; posturography; postural control; chaos theory; non-linear dynamics

PL

przewidywalność; prognozowanie; posturografia; teoria chaosu; dynamika nieliniowa

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2007
• Tom: Vol. 27, no. 4
• Strony: 71--83
• Opis fizyczny: Bibliogr. 16 poz., tab., wykr.

Twórcy

autor

Michalak K. P.

autor

Jaśkowski P.

• Departament of Biophysics, K. M. University of Medical Sciences of Sciences of Poznań, Fredry 10, 61-701 Poznań, Poland,

Bibliografia

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