Hi Tracy,

Well, I might say that assuming one chooses to uses TENTs,
then an event-related design (slow, preferably) is more
suitable than a block design. But having an event-related
design does not mean that TENTs are preferable. This task
might be well suited for using BLOCK(6,1), unless handling
variable response shapes is desired (you have suggested it
is).

In any case, since the events last 6 seconds, there should
only be an event at time 0 s, for example, not also at times
2 and 4 s. The TENT functions will account for the different
time points.

Also, the TENTs should be modeling the full response period,
not just the stimulus period. The purpose of the TENTs is
to model the average response, which might last about 18 s
in this case. So consider TENT(0,18,10), say, or something
else along those lines.


Yes, the underlay can be anything in the final space. If
you want to ponder the fitts, maybe make all_runs the
underlay and use the Dataset #N plugin to plot the fitts
along with it.

That overlay plotting seems good to me, though it is not
usually important to perform such a cluster correction at
the single subject level, not if the plan is to do it at
the group level later. But still, it is fine.

- rick