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

• REM

• 'sleep spindles' aid memory processing

• N3

• Story-like dreams

• N1

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?

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?

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.