title: Automatic REM sleep detection associated with idiopathic rem sleep Behavior Disorder.
abstract: Rapid eye movement sleep Behavior Disorder (RBD) is a strong early marker of later development of Parkinsonism. Currently there are no objective methods to identify and discriminate abnormal from normal motor activity during REM sleep. Therefore, a REM sleep detection without the use of chin electromyography (EMG) is useful. This is addressed by analyzing the classification performance when implementing two automatic REM sleep detectors. The first detector uses the electroencephalography (EEG), electrooculography (EOG) and EMG to detect REM sleep, while the second detector only uses the EEG and EOG.
  
  
  METHODS
  Ten normal controls and ten age matched patients diagnosed with RBD were enrolled. All subjects underwent one polysomnographic (PSG) recording, which was manual scored according to the new sleep-scoring standard from the American Academy of Sleep Medicine. Based on the manual scoring, an automatic computerized REM detection algorithm has been implemented, using wavelet packet combined with artificial neural network.
  
  
  RESULTS
  When using the EEG, EOG and EMG modalities, it was possible to correctly classify REM sleep with an average Area Under Curve (AUC) equal to 0.90 ± 0.03 for normal subjects and AUC = 0.81 ± 0.05 for RBD subjects. The performance difference between the two groups was significant (p < 0.01). No significant drop (p > 0.05) in performance was observed when only using the EEG and EOG in neither of the groups.
  
  
  CONCLUSIONS
  The overall result indicates that the EMG does not play an important role when classifying REM sleep.
authors.affiliation: Department of Electrical Engineering, Technical University of Denmark, Kgs Lyngby, Denmark. jke@elektro.dtu.dk
authors.forename: J
authors.initials: J
authors.lastname: Kempfner
authors.forename: G L
authors.initials: GL
authors.lastname: Sorensen
authors.forename: H B D
authors.initials: HB
authors.lastname: Sorensen
authors.forename: P
authors.initials: P
authors.lastname: Jennum
mesh_terms: D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004569:Electroencephalography / Q000379:methods*; D004576:Electromyography / Q000379:methods*; D004585:Electrooculography / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010363:Pattern Recognition, Automated / Q000379:methods*; D017286:Polysomnography / Q000379:methods; D020187:REM Sleep Behavior Disorder / Q000175:diagnosis / Q000503:physiopathology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012895:Sleep, REM