Figure 5. Resting state fMRI data.

Accuracy and precision of the MSE estimates up to scale 10 when estimating the MSE across j ( = 10 to 40) discontinuous segments of n ( = 16 to 64) data points of resting state fMRI data. (A) Accuracy. MSE values estimated from 885 continuous data points and averaged across all voxels and participants (N = 20) served as the benchmark for accuracy estimation. Benchmark MSE values are shown in the upper left plot. All possible combinations of j segments of n data points are shown in the right panels. (B) Precision. Precision of the benchmark MSE values is shown in the upper left plot. Note. Error bars indicate the SD of the average MSE values across participants (N = 20). The grey lines indicate the 95^th percentile and the black lines the maximum values (worst case) of accuracy and precision values across voxels, respectively. Accuracy and precision are given in log₁₀ scaling with smaller values plotted upwards. MSE = multi-scale entropy; Δ = absolute average difference between benchmark MSE and MSE estimated across discontinuous time series with a reduced overall amount of data points; SD = standard deviation.