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Cited by 377

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

P3 in Schizophrenia Is Affected by Stimulus Modality, Response Requirements, Medication Status, and Negative Symptoms

Pfefferbaum, Adolf·1989·Archives of General Psychiatry

Abstract

Eighteen schizophrenics who were not taking medication, 13 schizophrenics who were taking medication, and 37 age-matched controls were tested with event-related potential paradigms designed to elicit P3 response automatically or effortfully (ie, with a choice reaction time task). Electroencephalograms were recorded from the 19 standard 10-20 electrode sites. Compared with controls, both groups of schizophrenics had reduced P3 amplitudes for both effortful and automatic paradigms. P3 latencies were delayed relative to controls for the medication-taking schizophrenics in the effortful paradigms. Negative symptoms derived from the Brief Psychiatric Rating Scale within 1 week of event-related potential testing correlated negatively with both auditory and visual P3 amplitude in the subjects who were not taking medication. There was no evidence that P3 is smaller over left temporal electrode sites in schizophrenics, as has been reported by others. P3 amplitude reduction in schizophrenia is a robust psychobiological phenomenon that is present regardless of medication status or task demands.

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Crossref · 10.1001/archpsyc.1989.01810110077011

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Metadata

Authors
Pfefferbaum, A.
Venue
Archives of General Psychiatry
Published
1989-11-01
Volume
46
Issue
11
Pages
1035
ISSN
0003-990X (ISSN-L)
OpenAlex
W2048720556
Cited by
377
References
36
FWCI
25.54
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: P3 in Schizophrenia Is Affected by Stimulus Modality, Response Requirements, Medication Status, and Negative Symptoms. https://app.cochat.ai/papers/10.1001/archpsyc.1989.01810110077011
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Pfefferbaum, A. (1989). P3 in Schizophrenia Is Affected by Stimulus Modality, Response Requirements, Medication Status, and Negative Symptoms. Archives of General Psychiatry. https://doi.org/10.1001/archpsyc.1989.01810110077011

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