Sleep Flashcards
What is sleep?
A normal reversible, recurrent state, loss of ability to respond to external environment
TRUE/FALSE
When you are asleep you are unconscious
FALSE
you are not conscious- not fully aware of self/environment
you are not unconscious- can respond when stimulated
TRUE/FALSE
Species with higher metabolic rates have higher sleep times
TRUE
Is REM or non-REM essential?
Non-REM
A mid-afternoon nap of 15m is equivalent to how many minutes overnight?
90m
At the start of the night it is mainly ——- sleep
Non-REM
What is 3/4 of sleep for a young adult
Non-REM
What type of sleep is this describing?
Synchronised, rhythmic EEG activity, partial muscle relaxation, reduced cerebral blood flow
Non-REM
What is the purpose of Non-REM sleep?
Protein synthesis, cell division and growth
TRUE/FALSE
In Non-REM sleep there is increased HR, Blood pressure and tidal volumes
FALSE
there is decreased HR, BP and tidal volumes
When is REM sleep?
Towards the end of the night
What does the ECG show in REM sleep?
Fast activity
Which stage of sleep is remarkably similar to wakefulness?
REM
Name a class of drug that suppresses REM sleep? What is the effect?
Tricyclics
No effect
What is the purpose of REM sleep?
Consolidated memory and possibly deletes unnecessary files, maintains immunocompetence
How many hours a day do neonates spend asleep?
16h
REM sleep is mainly for ….
Early brain development
As we get older we have decreasing amounts of NREM and REM sleep TRUE/FALSE
FALSE
we have decreasing amounts of REM
Same amount of NREM
What is the circadian rhythm important for?
Sleep-wake Appetite Hormone secretion Body temperature Alertness
Retinal ganglion cells projecting to suprachiasmic nucleus entrains the what?
Body clock
TRUE/FALSE
Muscle recovers during sleep
FALSE
There is no evidence of muscle recovery during sleep however it does help with tissue repair
TRUE/FALSE
Cell division peaks during sleep
TRUE
TRUE/FALSE
Sleep deprivation affects all tasks
FALSE
Sleep deprivation does not affect old well-rehearsed tasks, routine and logic tasks
40% of REM parasomnias are idiopathic but can be preceding what disease?
Parkinsons disease
On a multiple sleep latency test how do you know it is narcolepsy?
Go into REM sleep right at the very start
On Lumbar Puncture in Narcolepsy what is expected?
Low CSF hypocretin levels
