Hi,
I've been working to send TTL signals to a Biopac MP35 amplifier in order to record event markers for collecting GSR data. What I would like to do is insert an event marker at the beginning and end of each trial. I've been successful with this before using a different amplifier (BioLog), but have not found a way to do this with the Biopac system.
Another problem I am having is that when I attempt to run the parallel port monitor inquisit crashes. Finally, I've also attempted to run the script to determine if the biopac will receive the TTL signal and I've had no success with this either. Below is a portion of script I'm using, first part is defining the TTL signal and below that you can see where I am attempting to insert these signals during a trial. Any advice would be appreciated.
Best,
Patrick
<port EM0>/ port = lpt1/ subport = data/ items = ("00000000")</port>
<port EM1>/ port = lpt1/ subport = data/ items = ("00000001")</port>
<trial CSM_H>/ stimulustimes = [1=CSM, EM1; 7000 = blank, EM0]/ inputdevice = mouse/ correctresponse = (lbuttondown)/ pretrialpause = 1500/ timeout = 10000</trial>