I've had Visual and Auditory Evoked Potential testing done three times. It is a benign test that just watches how your brain responds to stimuli. I did all of mine while sitting in a chair and watching a computer screen.

Mine were done as part of a comprehensive qEEG. It showed that my brain struggles to process and filter visual and auditory stimuli. It did not change treatment but did confirm the struggles I have.

I had no reaction except a bit of fatigue.