This here, is what I was trying to get to.

Originally Posted by
Mr.Samsa
Studies have shown that things which are traditionally thought of as aversive (for example, electric shocks) can be set up in such a way that the introduction of an electric shock can actually increase responding - thus making it, technically, a reinforcer. To simplify the explanation, the electric shocks act as a signal or cue for future events (i.e. the presentation of food), and so they take on a conditioned value which can be used to increase behavior.