Research Paper: Psychology States of Consciousness: Sleep Deprivation- Circadian

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States of Consciousness: Sleep Deprivation-

Circadian rhythms are normal changes in mental and physical characteristics that take place in the course of a day. The majority of circadian rhythms are controlled by the body's biological clock. "This clock, known as the suprachiasmatic nucleus or SCN is in fact a pair of pinhead-sized brain structures that jointly contain about 20,000 neurons. The SCN rests in a part of the brain called the hypothalamus which is located just above the point where the optic nerves cross. Light that reaches photoreceptors in the retina creates signals that travel along the optic nerve to the SCN. Signals from the SCN travel to several brain regions, including the pineal gland, which responds to light-induced signals by switching off production of the hormone melatonin. The body's level of melatonin normally increases after darkness falls, making people feel drowsy and ready to go to sleep" (Brain Basics: Understanding Sleep, 2007).

A person who suffers from Circadian rhythm sleep disorders are normally sleep deprived. All of these disorders entail a problem in the points of when a person sleeps and when they are awake. A person's internal clock controls the regulation of such body rhythms as temperature and hormone levels. The main circadian rhythm that this body clock manages is the sleep-wake cycle. The circadian clock works in a cycle that lasts a little longer than 24 hours. The circadian clock is set mainly by visual light cues darkness cures that are communicated down a path from the eyes to the SCN. This keeps the clock coordinated to the 24-hour day. Circadian rhythms and their sensitivity to time cues may alter as a person ages. Each circadian rhythm sleep disorder entails having a hard time falling asleep, struggling to stay asleep, and waking up frequently during the night, waking up too early with the inability to go back to sleep and experiencing poor quality sleep (Circadian Rhythm Sleep Disorders, 2008).

The results of the sleep deprivation assessment (Carpenter & Huffman, 2009) were very accurate. I am definitely sleep deprived. Not only did I find it difficult to trace the star I answered yes to almost all of… [END OF PREVIEW]

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APA Format

Psychology States of Consciousness: Sleep Deprivation- Circadian.  (2012, April 3).  Retrieved December 7, 2019, from

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"Psychology States of Consciousness: Sleep Deprivation- Circadian."  3 April 2012.  Web.  7 December 2019. <>.

Chicago Format

"Psychology States of Consciousness: Sleep Deprivation- Circadian."  April 3, 2012.  Accessed December 7, 2019.