Why do we need sleep?. Introduction to Psychology Why do we sleep and dream?. GOOD NEWS!.
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Introduction to Psychology
Why do we sleep and dream?
“Psychologists have discovered a treatment that strengthens memory, increases concentration, boosts your mood, moderates hunger and obesity, fortifies the disease fighting immune system, and lessens the risk of fatal accidents.”
“Even better, the treatment feels good, it can be self-administered, the supplies are limitless, and it’s free.”
The answer is simple.
Psychology: A Discovery Experience by Stephen L. Franzoi
Sleep serves many purposes. Sleep
Grazing animals – sleep less
ex. giraffes 2 hours/day
horses 3-4 hours/day
cats – 14 hours/day
bats/chipmunks – 20 hours/day
Sleep provides an opportunity for the body to repair itself.
-major restorative functions of the body like muscle growth & tissue repair occur mostly at night
Sleep deprivation over period of time leads to decreased functioning of immune system.
Sleep restores and rebuilds our memories of the day’s experiences.
Sleep helps us conserve our energy resources.
Sleep feeds creative thinking.
Boosts our ability to think, learn, & problem solve
Increases our ability to make connections
During sleep, the pituitary gland releases a growth hormone.
As we age, we release less of this hormone & spend less time in deep sleep.
Sleep plays a critical role in brain development of infants and children.
Spend 13 to 14 hours/day (more than ½ in REM)
Brain plasticity (changes in the structure & organization of the brain) is connected to sleep.
in adults – link between sleep deprivation & ability to learn/perform tasks
4. Decreased Reaction Time