Biopsychology 14/15

Question 1

What are Circadian Rhythms (CR)?

Answer 1

• Pattern of behaviour that occurs approximately every 24 hours, set and rest by environmental light levels

Question 2

examples of Circadian Rhythms

Answer 2

• Sleep-wake Cycle:
• Hormone Production:

Question 3

What are Ultradian Rhythms?

Answer 3

• Cycles that last less than 24 hours e.g. sleep cycle which repeats every 90-100 minutes

Question 4

What are Infradian Rhythms?

Answer 4

• Have duration greater than 24 hours, may last days, weeks, months or years