Neuro - cerebrovascular disease, sleep disorders

Question 1

when does non-REM sleep occur

Answer 1

start of night

Question 2

what happens during non-REM sleep

Answer 2

rhythmic ECG
partial muscle relaxtion
reduced cerebral blood flow
decreased HR, BP, tidal volumes

Question 3

when does REM sleep occur

Answer 3

end of night

Question 4

what happens during REM sleep

Answer 4

atonic muscles = no movement
fast ECG
narrative dreaming

Question 5

what are the 3 critical processes for sleep onset

Answer 5

homeostatic response = body recognises you’re tired
emotional response = calm not stressed/frightened etc
circadian rhythm

Question 6

give examples of REM parasominas

Answer 6

dreaming
sleep paralysis
simple behaviours
precedes parkinsons

Question 7

give examples of non-REM parasominas

Answer 7

non-dreaming 
confusional arousals 
sleep walking
sleep terrors 
restless legs

Question 8

what are the symptoms of narcolepsy

Answer 8

excessive daytime sleepiness
cataplexy = loss of muscle tone trigged by emotion 
sleep paralysis 
hallucinations at sleep onset 
rem behavioural disorder

Question 9

what are the investigations of narcolepsy

Answer 9

overnight polysommography
multiple sleep latency test
lumbar puncture = low hypocretin level