Eighteen students participated in an experiential exercise on circadian rhythms as part of the laboratory component of a psychology course. Participants measured their heart rate, blood pressure, mood, alertness, and visuomotor-cognitive performance. Measures showed significant circadian variation; they were strongly correlated and peaked at different times, providing support for a multioscillatory view of circadian control. Evaluation indicated students found this laboratory interesting, personally relevant, and helpful in understanding the importance of rhythms.
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