I have a trial like this at the moment.
<trial sometrial>
/ stimulustimes = [0=cue, TTLmarker_cueon;500=mask]
/ validresponse = (" ")
/ trialduration = 2000
</trial>
I need a way of sending out a parallel port signal (TTLmarker_responsemade) when the participant makes a response.
However, I need a way of doing this that preserves a 2 second duration between onsets.
I had thought about something like this, but it doesn't work:
<trial sometrial>
/ stimulustimes = [0=cue, TTLmarker_cueon;500=mask]
/ validresponse = (" ")
/ ontrialend = [values.iti = trial.sometrial.latency]
</trial>
<trial ititrial>
/stimulustimes = [0=TTLmarker_responsemade]
/trialduration = values.iti
</trial>
Any thoughts?