title: Does sleep EEG data distinguish between UP, BPI or BPII major depressions? An age and gender controlled study.
abstract: Clinical characteristics and sleep EEG data of 14 unipolar (UPR), 14 bipolar I (BPI) and 14 bipolar II (BPII) patients, matched for age and gender, were investigated during a major depressive episode. We observed a remarkable similarity in the clinical characteristics of the three samples and, concerning sleep EEG data, a trend to a higher percentage of awakening among BPI patients. Pairwise comparisons of the three subgroups showed that only the Newcastle rating scale score reached significant difference between BPI and UPR groups. We observed trends regarding the difference of awakening both between BPI and BPII groups and between BPI and UPR groups, difference of percentage of REM sleep between BPI and BPII groups and difference of Sleep Period Time between BPII and UPR groups. We also observed that the distribution of REM latencies in the BPI subgroup was different from the two others.
authors.affiliation: Institute of Psychiatry and Medical Psychology, University Hospital Brugmann, Brussels, Belgium.
authors.forename: P
authors.initials: P
authors.lastname: Fossion
authors.forename: L
authors.initials: L
authors.lastname: Staner
authors.forename: M
authors.initials: M
authors.lastname: Dramaix
authors.forename: C
authors.initials: C
authors.lastname: Kempenaers
authors.forename: M
authors.initials: M
authors.lastname: Kerkhofs
authors.forename: P
authors.initials: P
authors.lastname: Hubain
authors.forename: P
authors.initials: P
authors.lastname: Verbanck
authors.forename: J
authors.initials: J
authors.lastname: Mendlewicz
authors.forename: P
authors.initials: P
authors.lastname: Linkowski
mesh_terms: D000328:Adult; D000367:Age Factors; D003866:Depressive Disorder / Q000175:diagnosis*; D004569:Electroencephalography / Q000145:classification*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012737:Sex Factors; D012890:Sleep / Q000502:physiology*