Hi Tracy,

How long are the events? It looks to me like they might
be 6 seconds long, since the timing file seems to show
triplets of events, spaced on the TR grid. Are they
consecutive short events that you want to model, or are
they really single longer (6 s) events? If the latter,
Consider modeling each as a single event, and then using
longer response functions.

Along those lines, what is the reasoning for using basis
function TENT(0,6,4)? That allows for 6 second response
functions. For humans, we generally do not expect them
to be shorter than 12 s, though the endpoints can be
removed if they are assumed to be zero.

What does rest_time.1D represent? Is it actually the
time points that are not part of left_hand_time.1D and
right_hand_time.1D? If so, it should not be included.
Rest time is implicit in 3dDeconvolve. If rest time is
included as events, that will probably lead to the errors
and warnings you are seeing.

- rick