title: [2 cases of sleep apnea syndrome, and a few problems in sleep studies].
mesh_terms: D004569:Electroencephalography; D004576:Electromyography; D004585:Electrooculography; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000379:methods*; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000503:physiopathology; D012894:Sleep Stages