Examlex
Specialized secretory cells located centrally within the brain in the third and fourth ventricles that produce cerebrospinal fluid are called
States of Consciousness
The different levels of awareness and wakefulness individuals experience, including wakefulness, sleep, dreaming, and altered states such as meditation or hypnosis.
Slow-Wave Sleep
A term used for both stage 3 and stage 4 sleep; characterized by slow, rolling eye movements, low cortical arousal, and slowed heart rate and respiration.
Stage 1 Sleep
The initial phase of the sleep cycle, characterized by light sleep, easy wakefulness, and a decrease in bodily movement and heart rate.
Reticular Activating System
A network of neurons located in the brainstem that plays a key role in regulating wakefulness, alertness, and transitions between sleep and wakefulness.
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