Ultradian rhythms

Question 1

Ultradian rhythms

Answer 1

cycle takes less than 24 hours to complete

Question 2

what does this cycle alternate between

Answer 2

REM (rapid eye movement) and NREM (non-rapid movement)

Question 3

how many sleep stages are there

Answer 3

5

Question 4

how does the cycle begin

Answer 4

The cycle starts at light sleep, progressing to deep sleep and then REM sleep, where brain waves speed up and dreaming occurs

Question 5

stages 1 and 2

Answer 5

light sleep
brainwave patterns are slower and more rhythmic
breathing and heart rate slows

Question 6

stages 3 and 4

Answer 6

deep sleep
slow wave sleep
stages associated with slower delta waves

Question 7

stage 5

Answer 7

REM sleep
brain activity resembles that of an awake person
dreaming occurs

Question 8

evaluation weakness

Answer 8

individual differences Tucker et al. (2007) found significant differences between participants in terms of the duration of each stage, particularly stages 3 and 4 (just before REM sleep)