Skip to main content
. 2019 May 31;21(6):550. doi: 10.3390/e21060550

Figure 4.

Figure 4

Comparison between moving average and Butterworth filter in estimating the modified MSE. The same beat-by-beat PI series of Figure 3 are considered; (a) the most bradycardic segment, during nighttime sleep; (b) the most tachycardic segment, during daytime activities.