[Eeglablist] Handling Abrupt Changes After ASR Preprocessing

[和田真孝]

Hi all,

I usually use ASR for preprocessing in resting-state EEG analysis. This function removes segments of data that contain excessive noise. It works quite well; however, after the rejection, it directly concatenates the periods before and after the removed segments, resulting in abrupt changes in the waveform. I am concerned that these abrupt changes may introduce additional noise, such as ripples, in subsequent steps of the analysis, such as time-frequency or connectivity analysis.

Is this approach acceptable for further analysis? Or do you know of any good solutions to avoid this problem?

Best,
Masa

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Masataka Wada
Postdoctoral Scholar, Brain Stimulation Lab
Department of Psychiatry and Behavioral Sciences
Stanford University