Ch 5 Conciousness Flashcards
What is sleep?
“natures soft nurse”, “chief nourisher in life’s feast” - Shakespeare
Is nervous system active during sleep?
YES! not inactive
During sleep (mental)
new memories- including learning - are stabilized and integrated; active role, consolidation
during sleep (physical)
body repairs itself, tissues grow,
the immune system is strengthened,
body supply to muscles increase,
growth hormones released.
unhealthy weight gain
sleeping less than 7-8 hours per night = weigh more, and future weight gain in store
sleep deprivation and hunger
ghrelin ^^ signals your brain that it’s time to eat
leptin w cues your brain that you are full
both antagonizer and agonizer of the wrong things when you are lacking zzz
works as a washing machine
allows the brain to clean itself (brain cells generate waste products during regular tasks)
the glymphatic system flushes out toxins between your brain cells
brain cells shrink during sleep by up to 60% = more efficient cleaning
beta-amyloid
adenosine
^?
melatonin
?
more effects of + sleep
muscles relax, heart rate v mood, reaction time
6 hours > increase stroke risk
fatal familial insomnia
dimensia and dealth
accumulation of waste during day
caffeine blocks adenosine
Is nervous system active during sleep?
YES! not inactive
During sleep (mental)
new memories- including learning - are stabilized and integrated; active role, consolidation
during sleep (physical)
body repairs itself, tissues grow,
the immune system is strengthened,
body supply to muscles increase,
growth hormones released.
unhealthy weight gain
sleeping less than 7-8 hours per night = weigh more, and future weight gain in store
sleep deprivation and hunger
ghrelin ^^ signals your brain that it’s time to eat
leptin w cues your brain that you are full
both antagonizer and agonizer of the wrong things when you are lacking zzz
works as a washing machine
allows the brain to clean itself (brain cells generate waste products during regular tasks)
the glymphatic system flushes out toxins between your brain cells
brain cells shrink during sleep by up to 60% = more efficient cleaning
beta-amyloid
often in mice and alzheimers
sleep = v alzheimers = memory
adenosine
^?
melatonin
?
more effects of + sleep
muscles relax, heart rate v mood, reaction time
6 hours > increase stroke risk
fatal familial insomnia
dimensia and dealth
accumulation of waste during day
caffeine blocks adenosine
glumphatic system
?
lymphatic system
?
less sleep =
less sex drive
less memory
less alcohol tolerance
sleep deprivation $$
you can be charged with impaired driving if you are sleep deprived $$$
cutting sleep affects mood and emotion
greater risk for depression
less emotional control
amygdala and other brain circuits are 60% + more reactive
impairs the judgement of facial expressions
conscious?
you are still conscious when you are asleep
after hour loss (daylight savings time)
cyberloafing at work cluster headaches heart attacks traffic accidents work accidents police harassment
the recommended amount of time
7-9 hours for adults
8-10 hours for adolescents
how to tell if sleep deprived
drugging yourself to stay awake (coffee)
do you fall asleep almost right away?
— healthy to take ~15 min to fall asleep
