PS101 Chapter 5: Chapter 5 - Consciousness
Document Summary
Consciousness is awareness of internal and external stimuli. Can you have one without the other: mindwandering. Biological clock: light retinal receptors scn pineal gland melatonin (dracula hormone: released at night to help us sleep) Disruptions to the 24-hr cycle: lack of sleep, jet lag, shift work. 1 2 3 4 3 2 rem 2 3 4 3 2 1 (cycle: rem period increases as night goes on, beta waves are busy waves because you"re awake, variations in pattern. Slow-wave sleep (stage 3 and stage 4 sleep: deep breathing, muscles are relaxed, if awoken, you"ll be disoriented, sleep walking can occur, hormone is not yet released. Sleep deprivation causes cortisol to be sustained. Partial sleep deprivation: organs decline (ex. immune system decreases, increased hunger (increase in obesity, reduced hours of sleep, cognitive deficit, amygdala activity increases, but prefrontal cortex activity decreases. More emotional, but we can"t control it (moody)
