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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Brain Imaging Behav. 2015 Mar;9(1):5–18. doi: 10.1007/s11682-014-9339-3

Fig. 4.

Fig. 4

Pink (power law) noise with a power law exponent of α = 2 was used as a surrogate signal. The number of phase resets per sample (n/N) was held constant at 0.04 so as to observe the asymptotic behavior of fv as the number of points in the signal increased. Results are plotted on a semi-logarithmic scale to emphasize that the fv variance (“metavariance”) can be accurately captured from ~103 samples.