Am J Psychiatry 1992; 149:255-257
Copyright © 1992 by American Psychiatric Association
Modified activity of the human auditory cortex during auditory hallucinations
J Tiihonen, R Hari, H Naukkarinen, R Rimon, V Jousmaki and M Kajola
Low Temperature Laboratory, Helsinki University of Technology, Finland.
Previous reports have shown abnormalities in brain metabolism and evoked
responses of schizophrenic patients with hallucinations. The authors
recorded electric and magnetic auditory responses during transitory
auditory hallucinations in two patients. Small but replicable response
delays occurred during hallucinations. The results suggest that the effect
of hallucinations on auditory cortex activity is similar to the effect of
real sounds.
