How to send response-locked TTL signals?


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TonyF
TonyF
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Can anyone please tell me what is the correct method of using Inquisit 2.0 to send response-locked TTL signals? I'm doing EEG research, and I need to send a signal to my EEG-acquisition software indicating when participants respond (I'm able to send stimulus-locked signals with no problem).


Sincere thanks,


Tony Freitas


ChrisS
ChrisS
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Hi Tony,

I'm trying to do the same thing with my paradigm. I tried the above suggestions but for some reason it didn't work for me. 

Here's a section of mine. Do you have any suggestions?
********************************************************************************
MARKERS
********************************************************************************

<port pressmarker>
/ port = lpt1
/ subport = data
/ items = ("00001001")
/ erase = true ("00000000")
</port>

********************************************************************************
TRIALS
********************************************************************************

<trial green1>
/ trialduration = 1500
/ stimulustimes = [0= green; 0= greenmarker]
/ validresponse = (" ",noresponse,"p")
/ correctresponse = (" ")
/ responsemessage = (" ", pressmarker, 100)
/ responsetrial = (" ",correctfeedback1)
/ responsetrial = (noresponse,incorrectfeedback1)
/ responsetrial = ("p",pausetrial)
</trial>

GO

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