Dear SPMs,
I have a question about the preparation to DCM analysis. My steps were:
1. Preprocessing ( realign, slice timing, normalise and smoothing )
2. Estimating GLM (no regressors)
3. Extraction of the WM and CSF signals
4. Ajusting of the GLM with: CSF, WM, rp file and DCT file (RS frequencies)
At step 4, should DCT file be entered as a condition or regressor (like CSF, WM and rp file)?
Thanks a lot!
Helka
|