Sending triggers: how to best invoke them?

[J. Scott Saults]

Since I don't see it, I'm afraid that I failed to send the message 
with my code to the group , as I'd intended. (I might have just sent 
it to Fabrizio.) Anyway, my initial idea for sending a realtime 
response code was to run the following inline code (below) 
immediately after presentation of a 200 ms Target (with a 150 ms 
prerelease and a 2000 ms response interval.), which is then followed 
by a 500 ms mask. I'm wondering whether the write port on termination 
is better.

---------------------------
Dim keyboardMask As InputMask
Dim keyPending As Boolean
Dim responseOutData as Integer
Dim responseAccData as Integer
Dim kACC As Integer
WritePort &H378, 0
keyPending = True
sleep 10 'To reset the port - Could be done earlier elsewhere)
Set keyboardMask = Target.InputMasks(1)

Do While keyPending = keyboardMask.IsPending()
Loop

kACC = keyboardMask.ACC
responseOutData = c.GetAttrib("responseOutData")
responseAccData = kACC + responseOutData
WritePort &H378, responseAccData
----------------------------------------------------

Thanks.
J scott Saults

At 05:19 AM 10/2/06, you wrote:
>Hi all!
>
>Now that I've discovered how to send triggers, I'm trying to figure 
>out the best way to place them inside the experiment. Placing small 
>InLine scripts with a "WritePort" call is a straightforward, but 
>unsatisfying solution, due to the delay between the InLine 
>processing and the OnSet of the stimulus.
>
>Apparently, placing an InLine with OnSet instructions just before 
>the target object, would do part of the trick (see E-Basic help for 
>the RteRunnableInputObject.OnsetSignalEnabled property). But what if 
>I want to send triggers when a subject answer? I've read a message 
>of Paul Groot, posted not so long ago 
>(http://listserv.linguistlist.org/cgi-bin/wa?A2=ind0605d&L=eprime&D=1&P=670) 
>but I wonder whether waiting for a slide to terminate is reliable or 
>not for timing issues. Could I profit the OffSet instructions 
>instead? I'll try...
>.........................clip............
>     Fabrizio Ferri Benedetti
>     University of Valencia
>     http://www.uv.es/fafebe