Abstract
Twenty-one schizophrenics and 21 controls were exposed to a tenminute sequence of frequent and infrequent auditory stimuli. The amplitude of the third positive-going component (p<sub>3</sub>) of the average evoked response to infrequent stimuli was much larger in the control group (<i>P</i><.0003). Using a P<sub>3</sub>amplitude of 3.20μv in the first 2.5 minutes as a dividing point, only seven of the 42 subjects were misclassified. This amplitude had a significant correlation of -.48 with patient's age at first hospitalization. Amplitude of the second positive-going component (P<sub>2</sub>) to frequent stimuli was also much larger in the control group (P<.003). This amplitude has a significant correlation of -.41 with medication dosage in terms of equivalent amounts of chlorpromazine. Behavioral scales failed to correlate significantly with evoked response measures. Evoked response latencies did not distinguish the two groups.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
