Hearing Voices and noises in self-induced trance

[loostudent]

Sometimes the same symptoms are linked to these factors:

Auditory hallucinations have been known to manifest as a result of intense stress, sleep deprivation, drug use, and errors in development of proper psychological processes. Genetic correlation has been identified with auditory hallucinations, but most work with non-psychotic causes of auditory hallucinations is still ongoing.

High caffeine consumption has been linked to an increase in the likelihood of experiencing auditory hallucinations. A study conducted by the La Trobe University School of Psychological Sciences revealed that as few as five cups of coffee a day could trigger the phenomenon. (Wiki)