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Published in:
2014 | OriginalPaper | Chapter
Multifractal Analysis of Posturograms of Young and Elderly Persons
Author : Peter Dojnow
Published in: Biometric Authentication
Publisher: Springer International Publishing
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Multifractality
$$Sw$$
, auto- and crosscorrelations
$$h_2$$
of mediolateral and anteroposterior postural sways of healthy young and elderly subjects is studied by the MDFA, WTMM and MDCA methods. MDFA and MDCA reveal a random walk like time series with
$$h_2\sim 1.7$$
. Vibrating soles or aging decreases
$$h_2$$
of the elderly persons.
$$Sw$$
of the mediolateral sways is lesser than the anteroposterior sways. The random permutation of the series vanishes the multifractality which is related with the long-range power-low correlations.