BENTALL, R.P.

 _The Illusion of Reality:
 A Review and Integration of Psychological Research on Hallucinations_

"Psychological Bulletin." Jan.1990  page 82

   Supression of auditory hallucinations:
    reading/writing
    letter repetition (rate dependent: faster=fewer hallucinations)
    Stimuli (foreign language, music, etc.)
    (hallucinations decrease as stimuli become more meaningful.)

   Increased auditory hallucinations:
    sensory restriction
    white noise (moderate but NOT high levels of white noise)

   Left temporal lobe alpha is supressed during auditory hallucinations.
   Hallucinators show left ear deficit on auditory perception tasks.