Dear AFNI experts,
I am using 3dTproject to do nuisance regression. Sometimes we combine different types of regressors (movement parameters, physiological recordings, etc.) and also a band pass filter. The problem appears when I try to band pass at “0.002 - 0.01” and “0.012 - 0.028”.
It seems that band passing at those frequency ranges use at least more than 90% of the D.O.F from the data set. Then, if I have more regressors (movement parameters, physiological recordings, etc.) it is not possible to do the regression because the number of regressors exceeds the number of time points.
+ Block #0: 250 time points -- 243 stopband regressors ++ 1 Blocks * 5 polynomials -- 5 polort regressors + -- 14 other fixed ort regressors [7m** ERROR:[0m total number of fixed regressors (262) is too many for 250 retained time points!
Do you have any suggestion to deal with this problem?
Thanks in advance,