Changed Acoustic Evoked Neuromagnetic Responses can be Recorded in Schizophrenic Patients with Auditory Hallucinations

There is an indication that central processing in the auditory system is changed in schizophrenics with auditory hallucinations. Otoacoustic emissions generated from cochlear hair cells are a valuable indicator for the functioning of efferent and afferent pathways in the auditory system. They can be recorded easily without strain for the test persons or patients. To test whether auditory information processing is delayed or otherwise changed in schizophrenia, auditory evoked magnetic fields (AEF) were evoked with tone bursts (1 kHz, duration 50 ms, rise time 5 ms, intensity 70 dB SPL; series per 200 single burst…