Abstract
Individuals with schizophrenia (SZ) exhibit elevated electroencephalographic (EEG) power during rest, particularly at theta/alpha frequencies (6-9 Hz). To assess cortical activity undergirding this effect we localized theta/alpha power in the brain and computed functional connectivity within the default mode network (DMN). Principal component analysis (PCA) of the connectivity matrices was used to determine whether increased theta/alpha power in SZ arises from a distinct oscillator or a downward shift in alpha peak frequency.
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