Other questions in this quiz

2. Which of these pieces of equipment is used to measure brain waves during ultradian cycles?

  • EMG
  • EOG
  • EEG
  • ECG

3. How long does a circadian rhythm last?

  • More than 24 hours
  • A month
  • 24 hours
  • Less than 24 hours

4. Siffre studied circadian rhythms in a cave for 6 months, but how long did his biological rhythm run for?

  • 25 / 30 hours
  • 20 / 25 hours
  • 30 / 35 hours
  • 15 / 20 hours

5. Which of these is NOT a sleep disorder?

  • Sleep apnoea
  • Hypertension
  • Insomnia
  • Sleep walking

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