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Sensory Evoked Potentials in Psychosis

  • Charles Shagass
Part of the The Downstate Series of Research in Psychiatry and Psychology book series (DSRPP, volume 2)

Abstract

Three decades have elapsed since Dawson (1947) demonstrated that the averaging method can be used to extract sensory evoked potentials (EPs) from the electroencephalographic (EEG) rhythms in which they are embedded. During the first half of this thirty year period, the development of apparatus for accomplishing averaging was the prime concern of the few investigators in the field. Foll owing introduction of commercially produced equipment in the early 1960s, the volume of EP studies quickly expanded. Although EP recording was applied to clinical psychiatric research relatively early (Shagass and Schwartz, 1961), the number of psychiatric studies has grown quite slowly. The lack of faster progress can probably be attributed mainly to methodological difficulties inherent in studying psychiatric problems. At present, however, the slowly accumulated body of data bearing on EP correlates of mental illness may have reached the stage of beginning to justify optimism that it will be possible to realize one of the ultimate goals of such research, namely, to establish useful, objective neurophysiological indicators of psychopathology. The purpose of this paper is to review the principal findings obtained in EP investigations of the major psychoses.

Keywords

Median Nerve Visual Evoke Potential Somatosensory Evoke Potential Auditory Evoke Potential Chronic Schizophrenic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • Charles Shagass
    • 1
  1. 1.Eastern Pennsylvania Psychiatric InstituteTemple University Health Sciences CenterPhiladelphiaUSA

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