ReHo and ALFF/fALFF: multiple runs for each subject

Submitted by stef on Mon, 04/07/2014 - 23:38

 Dear experts,

I'm quite new with the toolkit REST,
and I have a doubt:
I have two groups (paitents-healthy controls) and I have 2 resting-state runs for each subject.
Once I performed ReHo (and ALFF/fALFF) calculation for each single run,
before the group analysis how should I combine the two runs of the same subject? A simple average of the two smReHo maps might be ok?

Thank you in advance,
Stefania