Sleep stages Flashcards
1
Q
Light sleep
Transition to this stage be associated with hypnic jerks
Characterised by theta waves on EEG
A
Non-REM stage 1 (N1)
2
Q
Deeper sleep
Represents around 50% of total sleep
EEG shows Sleep spindles + K-complexes
A
Non-REM stage 2 (N2)
3
Q
Deep sleep
Parasomnias such as night terrors, nocturnal enuresis, sleepwalking
EEG shows Delta waves
A
Non-REM stage 3 (N3)
4
Q
Dreaming occurs
Loss of muscle tone, erections
EEG shows Beta-waves
A
REM
5
Q
A