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Delta Waves
Slow brain waves typically associated with deep sleep and certain states of brain activity.
Paradoxical Sleep
Another term for REM (rapid eye movement) sleep, a sleep stage during which the most vivid dreams occur, characterized by paradoxical signals of brain activity.
Non-REM Sleep
A restful phase of sleep that progresses through several stages and is characterized by a decrease in physiological activity.
REM Sleep
REM sleep, or Rapid Eye Movement sleep, is a stage of sleep characterized by rapid eye movements, increased brain activity, vivid dreams, and temporary muscle paralysis.
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