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Do I need a parallel port component

OS (e.g. Win10): Windows 10
PsychoPy version (e.g. 1.84.x): 1.85.6
Standard Standalone? (y/n) yes

Do I need to use the parallel port component if I want to make the psychopy survey on my computer receive signals from an fMRI scanner? If I just plug my computer into the parallel port will the survey show up on the scanner screen?

That’s a question for your local scanner techs. Some scanners use parallel ports, other serial ports, more commonly now, they just send an emulated keypress via a response box.

No.

You don’t send a video signal over a parallel port. Again, ask your techs about how to connect to their particular display system using the appropriate connector (any of a number of standards, like VGA, DVI, HDMI, DisplayPort, etc etc).