Auditory hallucination

the individual may hear noises, meaningful sounds such as music, or one or more voices speaking meaningful phrases. The sound is usually localized, the source being precise, and may be the voice of a famous person, a friend, or some unknown or mysterious person or being. In schizophrenia there is often auditory hallucination where the voices are saying something derogatory about the individual or whispering about him; or there may be imperative hallucination which involves the individual being commanded to do something; another schizophrenic hallucination is echo de pensées, hearing one's own thoughts spoken out loud as though everything one thinks can be heard by others.