afni.nimh.nih.gov

Hi Andrew,

I believe that is because of the correlation for that pair of
in AM parameters for that regressor. The first AM pattern is
100 60 60 100 60. The third AM pattern is 60 20 20 60 20.

The correlation between these is 1.0 (subtracting 60 from the
first and 20 from the second yeilds the same result), so you
will not be able to disentangle their effects. They create
identical regressors sets.

- rick