triggering other computer

[Erin S. Rogers]

Thank you for the great help.  I have set up triggers going to my SCAN
computer, and they are registering when I do a Test Trigger Port.  But they
are not showing up during data acquisition.  Any ideas about what might
still be wrong?

Thank you,
Erin Rogers



At 09:12 AM 1/15/03, you wrote:
>Hi Erin,
>
>You just need a cable linking the eprime script to the eeg neuroscan
>computer. goes out of one, into the other. i think it is a serial cable - it
>should say in the manuals...its the same as you would get from neuroscan to
>use with stim...i got my cable from them....easy.
>
>to send triggers you put inline script into your eprime prog, with a command
>like 'writeport H278,0'
>
>this is a command to send a signal to the port.
>the address depends on the way your computer is set up obviously - and this
>should come up on the screena s your computer boots up and identifies the
>ports, or should be listed somehwere inthe system details....
>
>and the code 0 says turn the trigger off, - you can replace this with any
>number upto 255 i think, allowing you to send codes for different events....
>
>you can even grab these numbers from your trial list if you have an
>attribute that would code different event types.
>
>only problem i've found is if you send codes close together in time they
>dont always all get registered, so we usually send an off code, sleep for
>50msc, then send the code we want. this seems to work fine..
>
>i did this by reading the manuals..so the info is in there...
>
>hope this helps...
>and just to encourage you i can tell you it works...
>cheers
>david
>
>David I Donaldson
>Department of Psychology
>University of Stirling
>Stirling
>Scotland
>UK
>
>Tel: +44 (0) 1786 467657
>Mobile: +44 (0) 7929 147303
>Fax: +44 (0) 1786 467641
>Email: did1 at stir.ac.uk
>
>
>
>-----Original Message-----
>From: Erin S. Rogers [mailto:erin5 at stanford.edu]
>Sent: Tuesday, January 14, 2003 8:40 PM
>To: eprime at mail.talkbank.org
>Subject: triggering other computer
>
>
>Does anyone know what the hardware set-up should be when using Eprime to
>send triggers to an EEG computer (neuroscan)?
>
>--
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