sleepbb - Who needs sleep? What is it good for?...

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Unformatted text preview: Who needs sleep? What is it good for? & How much do we need anyways? Sleep  Two classes  Several stages  Cycles  Characteristic electrical activity patterns  Duration varies and changes over lifetime  Some important function? Sleep and the circadian cycle  Pineal gland Melatonin  Increased release 2-3 hours before bed  Used to treat jet lag WHY?  Causes Phase advance  Circannual or seasonal Who needs sleep? What is it good for? & How much do we need anyways? Review  If I am Blind, but have my eyes, what cues will I rely on to set my clock? LIGHT, etc  What if my eyes are missing? Sounds, exercise, food  Is the SCN the only clock in the body? NO  Then what does it do and where are these Review : molecular mechanisms  Our circadian rhythm is controlled by a _________ __________ mechanism. Negative Feedback  What proteins rise and fall are regulated by this system? Per and Cry  Light has what effect on this system? Increases per, resetting clock Who needs sleep?...
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sleepbb - Who needs sleep? What is it good for?...

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