Understanding Sleep and Dreaming Concepts

Which stage of sleep is characterised by rapid eye movement and vivid dreaming?

• Stage 1

• Stage 2

• REM sleep

• Stage 4

What is the main function of melatonin in the human body?

• To increase heart rate

• To regulate sleep-wake cycles

• To digest food

• To build muscle

Which of the following is a common symptom of sleep deprivation?

• Improved memory

• Increased alertness

• Difficulty concentrating

• Lowered blood pressure

What is a zeitgeber?

• A type of sleep disorder

• An external cue that helps regulate biological rhythms

• A hormone produced during sleep

• A stage of sleep

Which sleep disorder involves stopping breathing for short periods during sleep?

• Insomnia

• Narcolepsy

• Sleep apnoea

• Night terrors

According to Freud, what is the main purpose of dreaming?

• To consolidate memories

• To process random brain activity

• To fulfil unconscious wishes

• To regulate body temperature

How many stages are there in the non-REM part of the sleep cycle?

• 1

• 2

• 3

• 4

Which of the following is NOT a function of dreaming according to modern theories?

• Memory consolidation

• Emotional regulation

• Physical exercise

• Problem solving

What did Siffre’s 6 months in a cave experiment primarily demonstrate?

• The importance of light as a zeitgeber

• The dangers of sleep deprivation

• The effects of melatonin supplements

• The stages of REM sleep

Which hormone increases in the evening to help you feel sleepy?

• Cortisol

• Melatonin

• Adrenaline

• Insulin