I applied trial-level baseline correction to individual subjects’ SEEG TFR (morlet for TFR) data first and then averaged them. Afterward, I averaged the electrode data from the same ROI across all subjects.
However, the results are strange anyway. When using zlogratio, the baseline is completely off from 0 (see below).
When using z-score or other methods like mean, the baseline looks normal, though the post-stimuli data still appears odd (see below example, the TFR frequency parameter is slightly different but the tendency is the same when using the previous frequency parameter). I’m not sure if this is normal.
Do you have any suggestions? Thank you!