Dear Guorong Wu,

Thank you for your clarifications, they are greatly appreciated.

I encountered another issue after preprocessing the fMRI data using the CONN toolbox. I obtained a single rp.txt file for regressors, and for each subject, I obtained an ROI.mat file containing time series for all segmented ROIs.

To model the HRF response for the DMN, I extracted the time series corresponding to the DMN from the ROI.mat file. However, when I ran the rsHRF toolbox, I encountered an error indicating a size mismatch between rp.txt and DMN_time_series.mat.

Could you please help me resolve this issue?

Best regards,

Abir.