Long-term stability of resting frontal EEG alpha asymmetry and power in a sample of stable community outpatients with schizophrenia.
The authors examined the long-term stability of resting regional EEG alpha asymmetry and power (i.e., markers of affective style) in a sample of 15 stable community outpatients with schizophrenia. We found that resting frontal EEG alpha asymmetry and power both remained stable over a 36-month interval before and after controlling for patients' positive and negative symptoms. This same pattern was not evidenced in the posterior EEG sites. These findings provide preliminary evidence of a putative psychophysiological trait marker of affective style in stable community outpatients with schizophrenia.
Jetha
Michelle K
MK
Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario, Canada.
Schmidt
Louis A
LA
Goldberg
Joel O
JO
D000328:Adult; D000513:Alpha Rhythm; D005260:Female; D005625:Frontal Lobe / Q000503:physiopathology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D010045:Outpatients; D011569:Psychiatric Status Rating Scales; D012111:Residence Characteristics; D012146:Rest / Q000502:physiology*; D012559:Schizophrenia / Q000473:pathology* / Q000503:physiopathology; D013057:Spectrum Analysis; D013997:Time Factors; D055815:Young Adult