Microtubules in the brain have been associated with quantum computation and consciousness. The microtubules have been reorted to be affected in schizophrenia. Schizophrenia is also associated with hallucinations (auditory, visual etc.). In this paper we propose that quantum computation in the brain may b e altered in the patients with schizophrenia leading to the altered brain frequency and resonance with the parallel universes. This may be the reason for hallucinations experienced by patients with schizophrenia