title: Long-term stability of resting frontal EEG alpha asymmetry and power in a sample of stable community outpatients with schizophrenia.
abstract: 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.
authors.affiliation: Department of Psychology, Neuroscience & Behaviour, McMaster University, Hamilton, Ontario, Canada.
authors.forename: Michelle K
authors.initials: MK
authors.lastname: Jetha
authors.forename: Louis A
authors.initials: LA
authors.lastname: Schmidt
authors.forename: Joel O
authors.initials: JO
authors.lastname: Goldberg
mesh_terms: 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