Wow

This post brought back a faint memory of an old B&W science-fiction movie I saw as a kid back in the late sixties or early seventies...

A pair of "mad" scientists are extracting fluids from live monkey brains in a lab for a weird experiment.

Left alone, one of the scientists decides to inject the serum into himself and...insane psychedelic chaos ensues...anyone know the title of this one?

I had nightmares for weeks after seeing that I seem to remember