Had bizarre sensation of some kind of cog on a wheel turning *inside my brain* two nights ago

It felt mechanical is the only term I can use. As if there is literally a mechanical device implanted in my head! It was somehow resetting itself or rewinding or repositioning- something a machine would do- it was not organic. It even "felt" metallic, if that makes any sense. It almost felt like a tape cassette rewinding, but *in my head*. 

Dear God, what is happening to me? Seriously. I'm turning into a Cronenberg film.