Analysis of Human Standing Balance by Largest Lyapunov Exponent

Figure 3

The results of determinism test and stationarity test for the acceleration time series of a typical subject. (a) and (b) are the results of back, (c) and (d) are the results of hip, and (e) and (f) are the results of knee. (a), (c), and (e) are the embedding space and (b), (d), and (f) are the average cross-prediction error for all the possible combinations of and . The average values of all are 0.1209, 0.0613, and 0.0655 (for the acceleration time series of back, hip, and knee, resp.).

(a)

(b)

(c)

(d)

(e)

(f)