Sleep ION Program Summer 2013 electroencephalogram - EEG

Sleep ION Program Summer 2013 electroencephalogram - EEG

Sleep ION Program Summer 2013 electroencephalogram - EEG - record of the electrical activity of many neurons directly under the electrode - on the surface of cortex. This record is made from outside the skin. Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008

define sleep stages by the kinds of EEG waves seen at each sta Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008 We go through several cycles of sleep each night Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008

Sleeping patterns change with age Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008 Two Biological Clocks in the Brain Slide from Chris Goode, PhD, PSYC 1100: Natural

Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008 ur daily cycle (circadian rhythm) is determined in part by the SC (suprachiasmatic nucleus) in the hypothalamus Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9:

Consciousness Spring 2008 Consequences of Lack of Sleep Limits your ability to concentrate and solve problems* Increase acne* Lead to aggressive or inappropriate behavior*

100,000 Driving Accidents and 1,500 deaths each year from driving drowsy** *According to National Sleep Foundation ** According to the National Highway WHY do we sleep? rest/restoration hypothesis we sleep

to replenish energy, repair tissues evidence: marathon runners spend more time in deep sleep for 2 nights after Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008 adaptive or

preservation/protection theory: its dangerous out there; youre safer if you spend some time hidden and unconscious evidence: large herbivores who must eat constantly and have trouble hiding sleep LESS giraffes = 20 min at time 2-3x per day animals with few natural

predators sleep more - lions smaller animals that dont need to graze sleep more bats Slide from Chris Goode, PhD, PSYC 1100: Natural Sciences Aspect of Psychology, Week 9: Consciousness Spring 2008 Memory Sleep helps to strengthen or consolidate new memories in

Consolidation? the brain Rats spend more time in REM sleep after learning new tasks If deprived of REM sleep, weaker recall Some of these results inconsistent

Babies and Infants more time in REM Sleep Dolphins dont experience REM

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