IAS (Admin.) Mains Psychology Issues and Perspectives in Modern Contemporary Psychology-Study of Consciousness & Dreams Study Material (Page 1 of 8)

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Concept of Sleep: Important Concepts

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Sleep is a non-waking state of consciousness characterized by general unresponsiveness to environment and general physical immobility. Sleep is a naturally recurring state of relatively suspended sensory and motor activity, characterized by total or partial unconsciousness and the inactivity of nearly all voluntary muscles. Sleep is an innate biological rhythm that can never be entirely ignored. 4 days or more without sleep becomes hell for everyone. Sleep keeps the body, including the brain, healthy by regulating its temperature and immune system, conserving energy and aiding development and repair. Biologically, sleep is a necessity not a luxury.

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Concept of Sleep: Biological Basis of Sleep

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Biological Basis of Sleep

  • Hypothalamus: In humans, this clock is located in the suprachiasmatic nucleus (SCN) of the hypothalamus in the brain. The release of melatonin (sleep hormone) , a hormone produced by the pineal gland, is controlled by the circadian clock in the SCN. Melatonin production is inhibited by light and so it effectively provides a kind of internal representation of the external light conditions.
  • Serotonin producing neuron: Seroton…

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