Heart Rate Preceding Motility in Sleep.

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    • Abstract:
      Spontaneous movements in both stage 2 and REM sleep are preceded by similar heart rate increase, beginning approximately 8 sec before onset of the movement. It is suggested that the HR acceleration before spontaneous movement in sleep is not a gradual response to vascular congestion but, rather, may be triggered by internal arousal stimuli which, like movements, have sleep-stage-specific rates of occurrence. [ABSTRACT FROM AUTHOR]
    • Abstract:
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