title: The AASM recommended and acceptable EEG montages are comparable for the staging of sleep and scoring of EEG arousals.
abstract: OBJECTIVE
  To examine the measurement differences in sleep and EEG arousal statistics between the American Academy of Sleep Medicine (AASM) recommended EEG montage (F4-M1, C4-M1, O2-M1) and acceptable EEG montage (Fz-Cz, C4-M1, Oz-Cz).
  
  
  METHODS
  Prospective, blinded, randomized comparison.
  
  
  METHODS
  Australian clinical sleep laboratory in a tertiary hospital.
  
  
  METHODS
  50 consecutive patients undertaking polysomnography (PSG) for the clinical suspicion of sleep disordered breathing.
  
  
  METHODS
  N/A.
  
  
  RESULTS
  Patient EEGs were recorded using both the AASM recommended and acceptable EEG montages during the PSG. Two scorers were used to examine the difference in PSG statistics using the two EEG montages. The scorers analyzed the 50 studies using the two EEG montages. Ten of the studies were scored twice for each montage by each scorer to calculate intra-scorer and inter-scorer agreement. No statistically significant differences were observed between the PSG statistics of the recommended and acceptable EEG montages. The recommended EEG montage had greater inter-scorer agreement but no difference in intra-scorer agreement.
  
  
  CONCLUSIONS
  This study demonstrates that the two EEG montages endorsed by the AASM Manual produce similar sleep and EEG arousal statistics.
authors.affiliation: Sleep Disorders Centre, Department of Respiratory & Sleep Medicine, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.
authors.forename: Brett
authors.initials: B
authors.lastname: Duce
authors.affiliation: Sleep Disorders Centre, Department of Respiratory & Sleep Medicine, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.
authors.forename: Conchita
authors.initials: C
authors.lastname: Rego
authors.affiliation: Sleep Disorders Centre, Department of Respiratory & Sleep Medicine, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.
authors.forename: Jasmina
authors.initials: J
authors.lastname: Milosavljevic
authors.affiliation: Sleep Disorders Centre, Department of Respiratory & Sleep Medicine, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.
authors.forename: Craig
authors.initials: C
authors.lastname: Hukins
mesh_terms: D000368:Aged; D001143:Arousal; D001315:Australia; D004569:Electroencephalography / Q000379:methods* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D017286:Polysomnography / Q000379:methods* / Q000706:statistics & numerical data; D011446:Prospective Studies; D016037:Single-Blind Method; D012891:Sleep Apnea Syndromes / Q000175:diagnosis*; D012955:Societies, Medical
keywords: EEG; EEG arousal scoring; acceptable montage; inter-scorer agreement; intra-scorer agreement; kappa; polysomnography; recommended montage; sleep apnea; sleep staging