Consciousness & Sleep Day 1 Notes
Consciousness & Sleep Day 1 Notes
Awareness of everything going on within ourselves and our surroundings
onsciousness
FREUD’S THEORY OF CONSCIOUSNESS
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# 1
# 2
# 3
Hold up the number of fingers (1, 2, or 3) which best represents the preconscious mind.
BODILY RHYTHMSCircadian Rhythm– A biological rhythm of Sleep, Alertness, and Body
Temperature changes– 24 Hour sleep/wake cycle – Alertness slowly increases until around noon and then decreases until a dip around 3pm, rises
and peaks again around 6pm, then decreases slowly until around 3am and then gradually increases throughout the morning.
Rhythms:– Jet lag can mess with rhythms– Bright light can reset our natural
“clock”
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Did you know?If all light cues and clocks are hidden,
we will adapt to a 25-hour day
Necessity of Sleep• Circadian rhythm
– 24 hour bodily rhythm
• Hypothalamus – tiny section of brain influences glandular system
• Suprachiasmatic nucleus –internal clock tells people wake up/fall asleep
• tells pineal gland secrete melatonin for sleepiness
4.2 Why do people need to sleep and how does it work?
Theories of WHY We Sleep
• Animals evolved sleep patterns to avoid predators by sleeping when predators are most active
Adaptive theory - theory of sleep proposing that animals and humans evolved sleep patterns to avoid predators by sleeping when predators are most active.
Restorative theory - theory of sleep proposing that sleep is necessary to the physical health of the body and serves to replenish chemicals and repair cellular damage.