An EEG is nothing to fear. They put some conductive goop on your scalp and attach a dozen or so sensors to the goop.
They have you hyperventilate a bit and monitor your brain waves for 5 minutes or so. In a week or two, you get the interpretation
and you know something about your neurological health. It wasn't very memorable, but that's the way I remember it.
The results can be a life changer. They were for me.
I guess I when I'm ready one of these days, idk when that will be...