Hi Gang,

There is some varied duration across across trials in the same stimulus category. I've looked a little into dmUBLOCK, but it seems very similar to dmBLOCK, which assumes a canonical hemodynamic response function, which I'm trying to avoid with an FIR. If the best way then is to model each trial separately, does that mean that I need to re-order my stimulus timing files so that only trials with the same durations are modeled together? In other words, trials with a duration of 10 seconds would go through 3dDeconvolve, then repeat with trials where duration was 15 seconds and so on? If so, this seems like binning the trials into their durations, and if this is the case, is it still okay to use CSPLIN where the "stop" parameter is adjusted each time?

Dan
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