Feel for 10 secondsâ has been removed from the CPR sequence so chest compres-. sions can begin as soon as possible. No change in CPR sequence for drowning: after assessing for breathing, rescuers. deliver two initial rescue breaths followed by 30 chest compressions.
During REM sleep, your brain and body are energized and dreaming occurs. REM is thought to be involved in the process of storing memories, learning, and balancing your mood, although the exact mechanisms are not well understood. REM sleep begins in response to signals sent to and from different regions of the brain.
REM sleep is characterized by partial paralysis, vivid dreaming, and an EEG that resembles waking brain activity. It is also referred to as paradoxical sleep because the sleeper, although exhibiting waking-state EEG waves, is harder to arouse than at any other sleep stage. Key Terms