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. Author manuscript; available in PMC: 2011 Mar 9.
Published in final edited form as: IEEE Trans Biomed Eng. 2009 Apr;56(4):1015. doi: 10.1109/TBME.2008.2005954

Figure 2.

Figure 2

Recurrence period density entropy (RPDE) and detrended fluctuation analysis (DFA) results for healthy subjects (left panels) and for subjects with Parkinson's (right panels); (a-b) recurrence period density P(T) for recurrence times T, (c-d) log-log plot of scaling window sizes L against fluctuation amplitudes F(L). See main text for more detailed descriptions.