Quantitative EEG of Elderly Schizophrenic Patients
Corresponding Author
Masao Omori M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Department of Neuropsychiatry, Fukui Medical School, 23: Shimoaizuki, Matsuoka-cho, Yoshida-gun, Fukui 910–11, Japan.Search for more papers by this authorYoshifumi Koshino M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorTetsuhito Murata M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorIchirou Murata M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorTan Horie M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorKiminori Isaki M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorCorresponding Author
Masao Omori M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Department of Neuropsychiatry, Fukui Medical School, 23: Shimoaizuki, Matsuoka-cho, Yoshida-gun, Fukui 910–11, Japan.Search for more papers by this authorYoshifumi Koshino M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorTetsuhito Murata M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorIchirou Murata M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorTan Horie M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorKiminori Isaki M.D
Department of Neuropsychiatry, Fukui Medical School, Fukui
Search for more papers by this authorAbstract
Abstract: To investigate the brain bction of elderly schizophrenic patients, quantitative EECs of such patients were compared with thoee of healthy elderly controls. In schizophrenics, increases in delta and slow theta (4.0–6.0 Hz) waves were thought to be due to the influence of antlpsychotics. Characteristic EEC featurea of these patients included the following: 1) more fast theta (6.0–8.0 Hz) wave was observed, with less alpha wave faster than 9.0 Hz, 2) the reduction in alpha 3: (10.0–11.0 Hz) wave was limited to the frontal regions. The present EEG Andings are thought to characterize the traits of the subtype of chronic severe schizophrenia. The reduction in alpha 3: wave in the frontal regions may be one expression of the hypofrontality of schizophrenia.
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