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Forum Newbie
Group: Forum Members
Last Login: 12/11/2007 3:12:35 PM
Posts: 2,
Visits: 7
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Hi,
We're running an experiment where we need to send triggers from E-Prime to Neuroscan in order to mark our EEG data file so that we can see when stimuli are presented. We've collected data in this manner using an older Neuroscan system, but have recently purchased a new system and are unable to get the triggers to show up in Neuroscan, even when we use the same scripts that work with our older system. At times, the triggers will show up, but once we close the files and try to re-run everything, it'll stop working. Any ideas of what the problem could be?
Thanks!
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Forum Member
Group: Forum Members
Last Login: 4/9/2008 3:40:25 AM
Posts: 25,
Visits: 52
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Hello abrow3
Possibly somebody else has an idea – then you can skip this post.
We are also using Neuroscan. I am not sure if I can help you but with a bit more information I could find out :-)
>> We've collected data in this manner using an older Neuroscan system,
Which one?
>>but have recently purchased a new system
Which one?
>>and are unable to get the triggers to show up in Neuroscan,
What port do you use?
>>even when we use the same scripts that work with our older system.
(Possibly a sample would help)
>>At times, the triggers will show up, but once we close the files
Which one?
>>and try to re-run everything, it'll stop working. Any ideas of what the problem could be?
Not now...
Sorry for all those questions
Best regards Patrick
Patrick
Randomization: rqube.seifseit.de
Internet: http://eeglab.uni-trier.de
or: http://britz.wordpress.com
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Forum Newbie
Group: Forum Members
Last Login: 12/11/2007 3:12:35 PM
Posts: 2,
Visits: 7
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Thanks for the reply, Patrick. Sorry for the delay in responding.
>> We've collected data in this manner using an older Neuroscan system,
Which one? >>but have recently purchased a new system
Which one?
Both of our systems are SynAmps2 systems - the older one is a 64 channel system using one amp. The new one is a 128 channel system using 2 amps. The software for each is the same.
>>and are unable to get the triggers to show up in Neuroscan,
What port do you use?
We use the STIM/SCAN cord from Neuroscan to connect the computer running E-prime to the amps (the SCAN end connects to the JS1 trigger port on the amp). Then we use a USB cord to run the signal from JS8 on the amps to the computer running Neuroscan.
>>even when we use the same scripts that work with our older system.
(Possibly a sample would help)
The first InLine looks like this:
MStm.OnsetSignalEnabled = True
MStm.OnsetSignalPort = &H378
MStm.OffsetSignalEnabled = True
MStm.OffsetSignalPort = &H378
Msk.OnsetSignalEnabled = True
Msk.OnsetSignalPort = &H378
Msk.OffsetSignalEnabled = True
Msk.OffsetSignalPort = &H378
Prb.OnsetSignalEnabled = True
Prb.OnsetSignalPort = &H378
Prb.OffsetSignalEnabled = True
Prb.OffsetSignalPort = &H378
Then before the cue or target is presented, something like this:
MStm.OnsetSignalData = c.GetAttrib("FaceMark")
>>At times, the triggers will show up, but once we close the files
Which one?
When we close the E-Prime file. If I go in and set everything up now, the triggers may work, but if I close the experiment I'm running in E-Prime and try to run another experiment, the triggers will no longer work. Even if I go back to the original experiment and try to run it again, it won't work. It sounds crazy, I know.
Thanks for trying to help!
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