Sleep
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To examine the hypothesis that respiratory events in obstructive sleep apnea syndrome (OSAS) end in arousal not detected by conventional electroencephalographic (EEG) leads. ⋯ The addition of a single frontal lead (Fz) yields additional respiratory-related arousal information that appears physiologically relevant. Future studies are needed to assess clinical relevance to the evaluation and treatment of sleep-disordered breathing.
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To determine whether the brain stem can independently support the processes of rapid eye movement sleep rebound and pressure that follow deprivation. ⋯ Rebound in rapid eye movement sleep after deprivation cannot be sustained by the brain stem alone; in contrast, rapid eye movement sleep pressure persisted in the decerebrate cat, demonstrating that this process does not depend on descending forebrain influences. This indicates that rebound and pressure are 2 different components of the recovery process after rapid eye movement sleep deprivation and that, as such, are likely controlled by different mechanisms.