Sleep Flashcards
Non REM sleep is usually towards the end of the night. True or false?
False
- at the start of the night
What is the most important part of sleep? REM or Non-REM
Non REM
Deep sleep is REM or Non REM
Non REM
There is increased/decreased brain activity in REM sleep?
Increased activity
- it is similar to wakefulness
Most young adults’ sleep is REM or non-REM?
Non-REM
In which type of sleep can you not remember what you were dreaming of?
Non REM
EEG activity in REM sleep is normal/fast/slow ?
Fast
During non-REM sleep what happens to: HR BP Tidal volumes Cerebral blood flow
HR - decreased
BP - decreased
Tidal volumes - decreased
Cerebral blood flow - decreased
In which type of sleep can you remember what you were dreaming about? REM or Non-REM
REM
During REM sleep, cerebral blood flow is increased. True or false?
True
As you get older you get more/less REM sleep?
Less
Normal circadian rhythm lasts for __ hours?
25
Normal circadian rhythm is in sync with a daily cycle. True or false?
False
- daily cycle is 24 hours
- circadian rhythm is 25 hours
Sleep deprivation symptoms
Irritable
Visual hallucinations
Concentration lapses
Roughly which % of RTA’s are sleep related?
10
How much sleep per night is acceptable?
7 -> 7.5 hours
A mid afternoon power nap of 15 mins is equivalent to __ mins of overnight sleep?
90 mins
Name 2 sleep disorders
Parasomnia
Narcolepsy
Patient who is sleep walking, experiences sleep terrors and paralysis, has restless legs and grinds teeth during sleep has which sleep disorder?
Non-REM parasomnia
Which type of parasomnia occurs in patients with parkinson disease?
REM parasomnia
Narcolepsy is more common in males. True or false?
False
- equally common in M and F
Peak ages of onset for narcolepsy
15 and 36
Narcolepsy - clinical features
Daytime sleepiness Hallucinations Sleep paralysis - unable to move upon falling asleep or wakening Cataplexy
What is cataplexy (symptom)
Sudden physical collapse
Loss of muscle tone
Consciousness remains
What is cataplexy triggered by
emotion
Narcolepsy - investigations
Overnight sleep study
Multiple sleep latency test
LP
Narcolepsy patients fall asleep very quickly/slowly?
Quickly
Why is it useful to do a LP in narcolepsy patients ?
Low CSF hypocretin levels are consistent with narcolepsy
What are hypnagogic hallucinations?
hallucinations occurring at sleep onset
Narcolepsy patients go into REM or non-REM sleep first?
REM
Usually get REM sleep at the start/end of the night?
End
The following describes REM or Non-REM sleep disorders:
Easier to wake up from
Good recall of vivid dream on wakening
REM
In most RTAs caused by sleep deprivation, the driver has been acutely/chronically sleep deprived?
acutely
Which type of sleep is responsible for protein synthesis, cell division and growth?
Non-REM sleep
Which type of sleep is responsible for consolidation of memories and maintaining immunocompetence ?
REM sleep
Which type of sleep is important for early brain development?
REM sleep
What is the name given group of sleep disorders that involve unwanted events or experiences that occur while you are falling asleep, sleeping or waking up
Parosomnias
Muscle recovery takes place during sleep. True or false?
False
REM sleep behaviour is often seen preceding which condition?
parkinsons
What test an be done to investigate narcolepsy are what are the likely findings?
Sleep latency test
- REM sleep at the beginning
- Patient falls asleep quickly
Which type of sleep is most important for the consolidation of memories. REM or Non-REM ?
REM
