Hello list,

I'm new to optseq, and would like your help with the following issues:
1. What exactly does DPSD mean? and why does the TR has to be an integer of it?
2. My experiment design uses jitter - both ITI (i.e., between
trials) and ISI (i.e., between stimulus within a compound event). As i
understood, optseq can only supply me with the ITI jitter but no the
ISI jitter. is that right? do you happen to know a computerized method
to introduce a jitter within a compound event?
3. Is it true that jitter in optseq is made by inserting "NULLS",
and that the DPSD determines the "steps" of the jitter (for e.g., if
DPSD equals 1, Nullmin equals 2 and Nullmax equals 4, the NULL events
will be 2 3 or 4). Did i understand it right?

hope to hear from you soon,
Asaf.