Multivariate EEG power spectral analysis in acute schizophrenics.
The electroencephalogram (EEG) during information processing is influenced by specific changes in brain electrical activity. Based on the theory of disturbed information processing in schizophrenics, we analysed auditory stimulus induced EEG changes by Fast Fourier Transformation. The most important of the significant stimulation-dependent EEG power changes were measured in the 0.5-3.5 Hz and 10-13.5 Hz frequency bands in the left frontoparietal lead. In a multivariate analysis the separation of the subjects examined into acute schizophrenics and normals was incorrect in only 21% of the cases (resubstitution rate); using pi-method an error of 31% was estimated.
Schellenberg
R
R
Department of Pathophysiology, Medical Academy of Magdeburg, G.D.R.
Knorr
W
W
Beyer
H
H
Kropf
S
S
Schindler
M
M
Bölsche
F
F
Belicke
B
B
Kondratjuk
G
G
D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001921:Brain / Q000503:physiopathology*; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D012559:Schizophrenia / Q000175:diagnosis / Q000503:physiopathology*