Could anyone please suggest what values to be used for Window and noverlap inputs of pwelch function in Matlab. I am using a 200 ms EEG signal with sampling frequency 1000 (so total samples 200) to evaluate spectral power. By default pwelch uses hamming window and divides the data into 8 segments with 50% overlap. Are these default values okay for my small signal?

Thanks for the help!

  • $\begingroup$ Hi, welcome at CogSci. Could you perhaps provide a little more context about your study. What are you studying, and how will you analyze the data after applying the window? $\endgroup$ – Robin Kramer Jun 13 '17 at 16:32
  • $\begingroup$ This is a study of ERP response to stimuli in a 200 ms time duration. I want to compare the spectral powers in different frequency bands. $\endgroup$ – user8020776 Jun 13 '17 at 16:36

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