REM sleep

Question 1

REM

Answer 1

rapid eye movement sleep

Question 2

REM
duration

Answer 2

initially a few mins, then lengthening with each sleep cycle
20–25%

Question 3

REM
EOG

Answer 3

eyeballs rapidly move beneath the closed eyelids, darting back and forth and up and down in jerky movements.

Question 4

REM
EEG

Answer 4

speed up e.g. rapid, irregular, mixed frequency

Question 5

REM
EMG

Answer 5

Occasional twitching in the small muscles of the face, fingers, toes

Sleeper appears paralysed: therefore called Paradoxical sleep

Question 6

paradoxical sleep

Answer 6

internally, the brain and body are active, while externally the body appears calm and inactive.

Question 7

REM
HR / BT / BR

Answer 7

HR is faster and more irregular, BR is faster and more irregular

Question 8

REM
Any distinguishing features

Answer 8

Difficult to arouse in this stage
Most dreaming occurs in this stage

The body’s internal functioning is more active during REM sleep than during NREM sleep.