The American use of this term comes from a 1979 movie called "The Psychotronic Man". It refers to the ability to control the physical world with your mind. Because of this movie the word psychotronic fell into generic usage for obscure cult films.
We are going to the midnight showing of psychotronic films down at the Lake Theatre.
Completely RAD. Comes from an episode of the Battletoads TV show, in which one of the toads refers to something as "psychotronic!!"
Dude, that hoverboard in BttF2 is PSYCHOTRONIC!!!!