Brain Twisters (1993)

Professor Phillip Rothman, who looks like a cross between Alice Cooper and Rik Ocasek, is using his students in a research project for a company called Biotonics.  Skanky Michelle is doing poorly in class, so she offers sex for a good grade.  But Rothman would rather have her assist in his experiment meant to measure emotional responses to nerve stimulation.  Somehow this relates to computer game research.

Michelle is afraid of having electrodes hooked up to her head.  Rothman tells her, "If it's too much to handle, push the escape button."  My rule?  Count me out if your experiment is risky enough to need an escape button.  Too bad Michelle didn't have the same self preservation instincts since Rothman's experiment has the side effect of causing uncontrollable anger which leads to attacking and/or killing other people.

Meanwhile Laurie, who is in the same class and is doing work study for Rothman, finds her best friend murdered.  The Detective asks her to accompany him when they tell her friend's fiance, Ted.  They find Ted working as a waiter, order a meal, and then tell him the bad news.  As can be expected, Ted reacts badly.  But it gets weird because there are pinball sound effects, Ted looks strange, and then he jumps out the window.

Police are suspicious of Rothman because he claimed Ted's body and has a signed contract stating the body can be used for scientific research.  Rothman feigns innocence, but since his experiments involve cutting the heads off corpses, you know there's a problem.