Sounds that are played at certain frequencies which stimulate the brain in various ways. For example, certain binaurals can simulate doing certain drugs (Giving a 'high' feeling of euphoria), while other binaurals can give the feeling of an emotion or mood, such as sexuality. Sometimes referred to as 'sound drugs'.
Guy1: I was listening to some binaurals yesterday that got me so high and happy I didn't feel like doing any homework
Guy2: I tried a morphine binaural that was so intense that I had to stop it before it finished