> Would you suggest dropping the last trial (letting it be a 0) or do I just simply need to
> extend the run_len to 316.01 (this stim time would only occur in the last run so I don't
> think it would affect any other timing) and delete the last line after the fact.
You can simply drop that last trial because there is no information about the trial in the signal.
> just to test the rest of the steps I just threw out that last trial and when I created the
> interaction regressor with my 1,0,-1 file and my seed time series from 3dTfitter the
> resulting file had -0's. How is that possible?
You mean the output from 3dTfitter had a value of -0 at 316 seconds?
Gang