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Sleeping Problems
Educational only: videos on MedicalVideos.com are for general information and are not medical advice. Always consult your own doctor about your health.
What Are Sleep Disorders? Circadian Rhythm Disorders Typically, people sleep at night -- thanks not only to the conventions of the 9-to-5 workday, but also to the close interaction between our natural sleep and alertness rhythms, which are driven by an internal "clock." This clock is a small part of the brain called the suprachiasmatic nucleus of the hypothalamus. It sits just above the nerves leaving the back of our eyes. Light and exercise "reset" the clock and can move it forward or backward. Abnormalities related to this clock are called circadian rhythm disorders ("circa" means "about," and "dies" means "day"). Circadian rhythm disorders include jet lag, adjustments to shift work, delayed sleep phase syndrome (you fall asleep and wake up too late), and advanced sleep phase syndrome (you fall asleep and wake up too early).
This video in 30 seconds
This video covers sleeping problems, focusing on circadian rhythm disorders. It explains the internal clock in the suprachiasmatic nucleus of the hypothalamus, how light and exercise reset it, and the types of circadian rhythm disorders.
Key points
- Explains natural sleep and alertness rhythms are driven by an internal clock
- Identifies the clock as the suprachiasmatic nucleus of the hypothalamus, sitting above the nerves leaving the back of the eyes
- Notes light and exercise reset the clock and can move it forward or backward
- Lists circadian rhythm disorders including jet lag, shift work adjustments, delayed sleep phase syndrome and advanced sleep phase syndrome
Video Overview
This video presents “Sleeping Problems” — What Are Sleep Disorders? Circadian Rhythm Disorders Typically, people sleep at night -- thanks not only to the conventions of the 9-to-5 workday, but also to the close interaction between our natural sleep and alertness rhythms. Whether you are preparing for a procedure, studying the technique, or learning how a condition is assessed, the recording shows the process as it is performed in practice.
From our Psychiatry and Psychology collection: Mental health conditions, therapy approaches and the science of behavior explained by specialists. Browse all Psychiatry and Psychology videos →
Educational content only — not a substitute for professional medical advice.
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