External Email - Use Caution
Hi all,
I am a freshman in time-frequency analysis. I run a time-frequency
analysis with tfr_morlet. I found the results are large differences in
doing baseline correction before or after average epochs. I was wondering
what is the difference between these two steps?
Thank you very much
External Email - Use Caution
Hi Tao,
I am assuming you mean baseline correction on the output of the tfr_morlet
function? Since you are looking at power and it's not linear, the order of
the operation should indeed matter. Regarding which is recommended, my
intuition would be that averaging in the time-frequency domain is better
when you are looking for subtle oscillations that are not necessarily
completely aligned in phase. It's what we call induced power in MNE.
Mainak