[open] Opensesame's EEG trigger for ActiView

BingCai

Hi guys,

I am new to Opensesame. I need your help with my experiment.

I want to send EEG triggers for my visual stimuli. I have read the tutorial online, and I have tried to use plug-in and inline script. But they are not working. I put one plug-in before one visual stimulus and set the value 0. Then I put another plug-in after the visual stimulus and set the value 5. I didn't change other default settings. Am I doing this right? Right now the ActiView shows no response at all when I run the experiment (When I run E-Prime script, it shows response.). Where am I doing wrong?

Thank you so much for your help.

sebastiaan

Hi,

I'm afraid you'll have to provide a bit more information.

• Have you checked that the port address is correct?
• If you use the inline_script approach (link), do you see error messages in the debug window? For example, the script below will print a warning if dlportio.dll couldn't be loaded, which is a possible reason for why no triggers are sent.

try:
  from ctypes import windll
    global io
    io = windll.dlportio # requires dlportio.dll !!!
except:
    # This will be printed when the necessary dll couldn't be loaded
    print 'The parallel port couldn\'t be opened'

Cheers,
Sebastiaan