[FieldTrip] phase slope index - baseline?

Ioanna Zioga i.zioga at qmul.ac.uk
Thu Jul 4 12:44:25 CEST 2019

Hello Fieldtrip community!

I'm doing some connectivity analyses using phase slope index (PSI) while participants were listening to tones. I might be missing something, but I haven't found in the tutorials any specific advice on how to baseline PSI values, so I would like to ask what you think:

  1.  Is it necessary to baseline the PSI in response to short stimuli (<1 sec)?
  2.  What is the best way to baseline, e.g., by subtracting the average PSI of a baseline period before stimulus onset?
  3.  What range of values should I expect from PSI results, before and after doing the baseline?

A huge thank you in advance for your time and help!

Best wishes,

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