80 likes | 237 Views
2014 Annenberg science symposium. Penncrest Medical Scholars. A Decade of Discovery. Percentage of (ask Seb ) . Restorative Theory Opportunity for rejuvenation muscle growth, tissue repair, protein synthesis, and growth hormone release occur mostly, or in some cases only, during sleep.
E N D
2014 Annenberg science symposium Penncrest Medical Scholars
A Decade of Discovery Percentage of (ask Seb)
Restorative Theory • Opportunity for rejuvenation • muscle growth, tissue repair, protein synthesis, and growth hormone release occur mostly, or in some cases only, during sleep Why do we sleep? Energy Conservation Theory • To reduce energy expenditure • Metabolism is reduced during sleep Inactivity Theory • Evolutionary adaptation • Keep low profile during times of vulnerability
What happens when we sleep? • Circadian Rhythms • Physical, mental, and behavioral that follow a 24 hour cycle-mostly corresponding to light and dark in the environment • Controlled by “biological clocks”-groups of nerves • Better understanding could lead to treatments for sleep disorders, jet lag and other health problems
What happens when we sleep? Sequence of Sleep Stages
Common Sleep Disorders • Insomnia • -Inability to fall or stay asleep • Sleep Apnea • -Periods of not breathing or shallow breathing • Restless Leg Syndrome • -an urge to move the legs to stop unpleasant • sensations