Dement & Kleitman

Front

What is the purpose of determining when dreaming occurs?

Back

To study the relationship between dreaming and physiological variables

Answer explanation

Determining when dreaming occurs helps researchers study the relationship between dreaming and physiological variables, such as brain activity and sleep stages, providing insights into the nature of dreams.

Front

How did Aserinsky and Kleitman determine the relationship between eye movements and dream recall?

Back

By awakening subjects during periods of rapid eye movements

Answer explanation

Aserinsky and Kleitman determined the relationship by awakening subjects during periods of rapid eye movements, which allowed them to correlate these movements with dream recall, confirming that REM sleep is associated with vivid dreams.

Front

What did the study find about the occurrence of rapid eye movements (REM) during sleep?

Back

REM periods occurred regularly throughout the night

Answer explanation

The study found that REM periods occurred regularly throughout the night, indicating a consistent pattern of REM sleep rather than being limited to specific times or conditions.

Front

What was the relationship between eye movements and dream recall?

Back

Dream recall was high when subjects were awakened during REM periods.

Answer explanation

Research shows that dream recall is significantly higher when subjects are awakened during REM sleep, as this is when most vivid dreaming occurs. Thus, the correct answer is that dream recall was high when subjects were awakened during REM periods.

Front

How did the length of REM periods relate to the subjective duration of dreams?

Back

There was a positive correlation between REM period length and dream duration

Answer explanation

Research indicates a positive correlation between the length of REM periods and the subjective duration of dreams, meaning longer REM periods are associated with longer perceived dream durations.

Front

What did the eye movement patterns during dreaming represent?

Back

The visual experience of dreaming

Answer explanation

The eye movement patterns during dreaming reflect the visual experience of dreaming, indicating that the brain is actively processing images and scenarios, similar to visual perception while awake.

Front

How did the eye movement patterns during dreaming compare to eye movements observed while awake?

Back

Eye movements during dreaming were similar to eye movements while observing close-up activity.

Answer explanation

Eye movements during dreaming resemble those observed while observing close-up activity, indicating that the brain processes visual information similarly in both states.

Front

What did the study find about the occurrence of dreaming during periods of ocular quiescence?

Back

Dreaming rarely occurred during periods of ocular quiescence

Answer explanation

The study found that dreaming rarely occurred during periods of ocular quiescence, indicating that these periods are not conducive to dreaming.

Front

What was the relationship between the length of rapid eye movement (REM) periods and dream recall?

Back

Longer REM periods were associated with higher dream recall

Answer explanation

Research indicates that longer REM periods are linked to better dream recall, as dreams typically occur during these phases. Therefore, the correct answer is that longer REM periods were associated with higher dream recall.

Front

How did the incidence of dream recall change throughout the night?

Back

Dream recall was highest in the second 2 hours of sleep.

Answer explanation

Dream recall tends to increase during the later stages of sleep, particularly in the second half of the night. This is when REM sleep becomes more frequent, leading to higher dream recall, making the correct choice the second 2 hours.