Hello,

That looks okay, depending on how s1*s2 was constructed.

Since the phase of the S1 and S2 events differs from that of S1xS2 (is that the p2 file?), presumably the S1.1D and S2.1D files are zero where S1xS2.1D is non-zero, and vice versa. So if those were multiplied, the result would be all zero. Is that the case? I just want to be sure the regressors are temporally offset, so that the phases are distinct.

To be sure, multiple phases exist within a single run, is that right? Or is it supposed to be one phase per run?

And are you sure you do not want other regressors of no interest, such as for motion?

There is mention of 'censor' in the X-matrix. Has there been a regression already applied? What processing leads up to this?

- rick