Ultradian rhythms STUDIES

Question 1

Dement and Kleitman REM

Answer 1

Woke participants up at either REM or NREM stages Found that Pps in REM sleep recalled dreams 89% of the time and only 7% in NREM. This suggests that dreams occur in REM sleep however, some people may recall dreams(or hallucinate) during NREM sleep.

Question 2

Ericcson violin players

Answer 2

Studied musicians that practiced in 90 minute increments, with naps between sessions. A similar pattern was found in athletes, writers and chess players. This suggests that people, besides having 90 minute sleep cycles, have 90 minute periods of alertness during the day.