Abstract
This chapter focuses on electroencephalogram (EEG) studies of schizophrenic patients. There have been numerous studies of the EEG characteristics of schizophrenic patients without any identified organic components to their illnesses. Many of these reports were from the preneuroleptic era, at a time when EEG technology was relatively primitive and imprecise descriptions of both psychiatric phenomena and EEG characteristics were commonly employed. Many recent investigations of quantitative EEG characteristics of schizophrenic patients have focused upon right-left asymmetries and hemispheric dysfunctions that may be associated with the illness. Ventricular enlargement in some patients with schizophrenia and some lateralized asymmetries have been demonstrated with computerized tomography. Quantitative techniques of EEG analysis and mapping of multi-lead EEG activity in conjunction with newer techniques of brain imagery offer more indications of the lateralization, localization, and nature of the pathology in schizophrenia. EEG evidence supports the impression of greater impairment of the dominant than the nondominant hemisphere in schizophrenia.
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