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Some Features of the Auditory Evoked Response in Schizophrenics
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 (p3) of the average evoked response to infrequent stimuli was much larger in the control group (P<.0003). Using a P3amplitude 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 (P2) 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.
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Cited by
Characterization of N200 and P300: selected studies of the Event-Related Potential
Patel, S. H., & Azzam, P. N. (2005) · International Journal of Medical Sciences · doi:10.7150/ijms.2.147 · Cited by 794
Pfefferbaum, A., Wenegrat, B. G., Ford, J. M., Roth, W. T., & Kopell, B. S. (1984) · Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section · doi:10.1016/0168-5597(84)90027-3 · Cited by 573
Self-citationNeurophysiological Endophenotypes of Schizophrenia: The Viability of Selected Candidate Measures
Turetsky, B. I., Calkins, M. E., Light, G. A., Olincy, A., Radant, A. D., & Swerdlow, N. R. (2006) · Schizophrenia Bulletin · doi:10.1093/schbul/sbl060 · Cited by 567
When Doors of Perception Close: Bottom-up Models of Disrupted Cognition in Schizophrenia
Javitt, D. C. (2009) · Annual Review of Clinical Psychology · doi:10.1146/annurev.clinpsy.032408.153502 · Cited by 503
The endophenotype concept in psychiatric genetics
FLINT, J., & MUNAFÒ, M. R. (2007) · Psychological Medicine · doi:10.1017/s0033291706008750 · Cited by 477
Metadata
- Authors
- Roth, W. T.
- Venue
- Archives of General Psychiatry
- Publisher
- American Medical Association (AMA)
- Published
- 1972-10-01
- Volume
- 27
- Issue
- 4
- Pages
- 466
- ISSN
- 0003-990X (ISSN-L)
- OpenAlex
- W1987465663
- Cited by
- 293
- References
- 0
- FWCI
- 7.49
- Type
- journal article
- Language
- en
- Open access
- closed
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