What I recognized as “brain shocks” when I was taking generic escitalipram (Lexapro) would be a feeling sort of like a short circuit in my brain for a quick flash of a moment. Like another commenter said, quick movements of my eyes or head could cause it. It was quick, and non lingering, but could happen frequently. Just a little bzzt! In the brain with a little visual stutter. It didn’t hurt but it was disconcerting until I realized it was normal when missing or cutting down doses. Sounds like it can happen for some people on the normal dose but that wasn’t an issue for me.
Too bad he didn’t consider that an investment in his future and not just explicitly that show.