Examlex
What is a polis? How did having the polis as the central political institution of classical Greece shape the history of Greece during this period?
Brain Active
The state of being engaged in mental activity or cognitive functions, such as thinking, learning, or processing information.
REM Sleep
A phase of sleep characterized by rapid eye movements, dreaming, and increased brain activity.
Sleep Study
A diagnostic test that records bodily activities during sleep to identify and evaluate sleep disorders.
Sleep Stages
The different phases that occur during sleep, characterized by distinct brain wave patterns and physiological responses, including REM and various stages of NREM sleep.
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