an easy stimulation set up question?

[CNeely]

Hello all,  

I'm very new to E prime and know a few of the basics (from watching 
tutorials).  My mentor and I are stuck on how to set up our stimulator 
(StimisOB isolator using Stim100).  It seems that the isOB is out of date, 
and there aren't too many instructions on how to configure it.  Would this 
be a significant problem?

Another question: we're using the same set up as Phelps, 2004 (Extinction 
learning in humans, amygdala and vmPFC).  The first step is stimulator 
calibration based on the participant's feedback.  The participant will be 
given a mild shock starting at 10 V for a 200 ms duration with 50 pulses 
per second.  We think that the trigger in E prime is too fast and we aren't 
getting a high enough voltage.  I was interested in your thoughts/help, if 
this is the case.

Lastly (I promise, this I think is the easy question), is how to time this 
so that the shock is delivered during a 4 second presentation of the CS+ (a 
blue screen).      

I realize this is three questions in one, but I really appreciate any 
advice or feedback!

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