afni.nimh.nih.gov

Hi,

My dataset is a spiral axial oblique acquisition, irregular timing (condition is on after 4 seconds in every timepoint ), TR=10seconds, 32 Timepoints/run, 6 runs,3T magnet -auditory study;


My question is related to 3dDeconvolve. As far as I understand
1lag= 1TR and the hrf peaks after 12-16 seconds.

I don't know why 3dDeconvolve doesn't run when I set the min lag to be 0 and max lag to be 2 (TR=10seconds ==> 2 lags=20seconds). It runs only for min lag 5 and max lag 7 .

Thank you,
Teodora