Explore the wonders of sleep and dreaming, including sleepwalking, sleep eating, and REM sleep disorders. Learn about cataplexy and its connection to narcolepsy, and the role of dreaming in sleep. Uncover the mysteries behind why we sleep and why we dream.
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Quick takeaways
Disrupted sleep can affect mood and anxiety levels.
Uncommon sleep disorders include sleepwalking, sleep eating, and hypnagogic hallucinations.
Deep dives
The Functions of Sleep
Sleep serves multiple purposes, including regulating the brain and body, promoting housekeeping functions in the brain, such as the removal of toxins and reconfiguring neural connections for learning and memory. Disrupted sleep can have negative consequences on mood and anxiety levels.
Different Stages of Sleep
Sleep is divided into non-REM and REM stages. Non-REM sleep has three stages: light, intermediate, and deep sleep. Deep sleep occurs in the first half of the night, while REM sleep, associated with dreaming, occurs primarily in the latter half of the night. Sleep patterns cycle several times throughout the night.
Unusual Sleep Disorders
Uncommon sleep disorders include sleepwalking, sleep eating, sleep talking, and hypnagogic hallucinations. Sleepwalking can involve complex behaviors like driving or riding a motorbike. Sleep eating may lead to unusual eating behaviors like consuming bleach or raw meat. Hypnagogic hallucinations occur as individuals drift off to sleep and can cause terrifying visions and sleep paralysis.
At night our brain can have adventures. Even if they're fully asleep, some people end up sleep walking or sleep driving! The neuroscience of nightmares and dreaming—and what they can tell us about the workings of our brain.
This program was originally broadcast in June 2019.
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