Thanks Jan. Please further help check the below, I am not sure whether I
exactly understand how adding parametric modulator (pm) change the beta of
the task:
given values of the 8 blocks of a task are 10+[1:8]
for the model without pm, the beta of the task would be mean(10+[1:8])
for the model with pm, the beta of the task would be 10, and the beta of the
pm would be like 1(the slope is 1)
Is the above correct?
Xiang
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