Sleep and Wakefullness Flashcards
(63 cards)
what are the consequences of sleep deprivation?
weight loss, impaired cognitive abilities, death
sleep may be needed to replenish __ stores in the brain
glycogen
sleep may be required for ___ consolidation
memory
sleep is intrinsically regulated by ___
internal clock (circadian rhythms)
sleep is extrinsically regulated by ___
light and dark cycle
neurons require a lot of glucose during wakefulness, this glucose is provided by ___ cells
glia;
sleep allows for the clearing of ___ made by neurons
waste (o2 radicles)
t/f cellular repair happens better during sleep
true
t/f sleep is subject to regulation on multiple layers
true
light activates ___ that project into brain structures that house the internal clock
retinal ganglia
the body and brain can regenerate in what stage of sleep?
non rem
heart rate and respiratory rate ___ in NREM
decrease
NREM sleep is longer and deeper at what point in the night?
early
REM sleep is also called __ sleep
paradoxical
REM sleep is characterized by
rapid eye movements, but inactivation of skeletal muscle
heart rate and respiratory rate ___ in REM sleep
increase
REM sleep is longer and more frequent at what point in the night?
later in sleep phase
dreams occur in what stage of sleep?
REM
memory consolidation occurs in what stage of sleep?
REM
t/f it is suggested that REM sleep may have some metabolic demand
true
electroencephalogram EEG allows measurement of
neuronal activity (mainly of the cortex)
what does an EEG look like during wakefulness?
high frequency low amplitude waves
with low amplitude, high frequency waves, what can be said about the neurons of the cortex?
asynchronous , everyone doing their own function
what rhythm is seem in attentive wakefulness?
beta (>13 Hz)
