Sleep Stages - Unit 2: Altered States of Consciousness

How are sleep stages measured?

• Respiratory rate
• Blood pressure
• Heart rate
• EEG/brain waves

What happens to brainwaves as we transition from alpha rhythm to theta rhythm in sleep stages?

• They speed up
• They become irregular
• They slow down
• They disappear

Which sleep stage is known for the occurrence of vivid dreamlike images resembling photographs?

• Stage 1
• Stage 2
• Stage 3
• Stage 4

What is the level of consciousness where information is not in our conscious but can be retrieved?

• Preconscious
• Nonconscious
• Subconscious
• Conscious

During which stage of sleep does the body temperature fall to its lowest point between 3 & 5 a.m. each day?

• Stage 1
• Stage 2
• Stage 3
• Stage 4

What is the term for the biological clocks that regulate bodily changes like body temperature and sleepiness?

• Hypnosis
• Biofeedback
• Consciousness
• Circadian rhythms

What refers to a person's sense of self or sense of the world changing in altered states of consciousness?

• Biofeedback
• Consciousness
• Circadian rhythms
• Hypnosis

Which of the following is an example of a nonconscious biological function?

• Breathing in and out
• Controlling your heartbeat
• Feeling your pupils adjusting to light
• Sensing your fingernails growing

Which bodily changes are part of circadian rhythms in humans?

• Lung capacity, skin temperature, appetite, and alertness
• Body temperature, blood pressure, sleepiness, and wakefulness
• Heart rate, muscle strength, digestion, and vision
• Hormone levels, immune response, metabolism, and stress levels