Envelope correlation with signal from non-brain source

Hi Francois. Thank you for the fast response.

I have done estimating source & scout time series. I then proceeded with averaging time series across subjects (the setting as picture below, are they correct?).

So an averaged file appears under group analysis with all 170 regions for 3 minutes recording (picture below).

So now I plan to export this averaged time series into SPSS to correlate its envelope with stimuli envelope. For the analysis, I will only choose gamma range (30-80Hz), 30 ROIs and first 2 minutes from the whole recording.

How can I perform this step? Is it possible to have them exported as numerical values? Since I'm not familiar with programming & coding eg. Matlab, Python etc.