I've been doing independent research on this subject and on a grander scale - the human mind and how it operates and is subsequently conditioned since high school.
If the computer is a model of the human mind and must be "programmed" in order to operate, who or what is in charge of programming what you wear, how you talk, why you react in certain ways??
Specific images can be used to elicit fright, joy, pain on a subconscious level. When used with a great soundtrack it can do an assault on your senses. If you don't believe me, watch your favorite scary movie on mute.
I beleive they call it programmed music. Music to stir emotion at critical moments in a film.
Music in a horror draws you slowly to a point when bang, something loud will suddenly happen to make you jump, its not the action that makes you jump, its the sudden loud noise that hits at a critical time.