Psychology's Study of Sleep

Our body temperature tends to rise and fall in sync with a biological clock, which is referred to as the

During the N1 sleep stage, a person is most likely to experience:

• a. Sleep spindles

• b. Hallucinations

• c. Night terrors or nightmares

• d. Rapid eye movements

The brain emits large, slow delta waves during

• N1

• N2

• N3

• REM

As the night progresses, what happens to the REM stage of sleep?

• It increases in length

• I decreases in length

• It stays the same

• It disappears

Match the sleep stage with the cognitive experience:

• Minimal awareness

• N2

• Hallucinations, e.g. you falling

• N3

• Story-like dreams

• N1

• 'sleep spindles' aid memory processing

• REM

What stage of sleep is associated with slow delta waves?

• N1

• N2

• N3

• REM

Which stage of sleep is associated with memory processing and has periodic 'sleep spindles' on an EEG reading?

• N1

• N2

• N3

• REM

What type of brain waves are associated with being awake? Select all that apply

• Alpha

• Delta

• Theta

• Beta

What does REM stand for and what happens during this stage of sleep?

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Answer explanation

Rapid Eye Movement, this is the stage where you typically have dreams

Why do we not move our arms and flail about when we dream?

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Answer explanation

The brainstem blocks the messages from your brain to your motor neurons, so you do not react physically to stimuli in your dreams.