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Biological Rhythm. Ashley and Jazzmine. Internal biological clocks. Annual cycles- seasonal variation 28 day cycles-female menstrual cycle 24 hour cycles-daily cycles of alertness 90 minute cycles-human sleep cycles. Annual Cycles.
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Biological Rhythm Ashley and Jazzmine
Internal biological clocks • Annual cycles- seasonal variation • 28 day cycles-female menstrual cycle • 24 hour cycles-daily cycles of alertness • 90 minute cycles-human sleep cycles
Annual Cycles • On an annual cycle , geese migrate, grizzly bears hibernate and humans may experience seasonal variations in appetite , sleep length and moods. For some people, especially in far northern regions a depressed mood during winters dark months may define a seasonal affective disorder.
28 day cycles • The female menstrual cycle averages 28 days does that cycle cause fluctuation moods? Many believe it indeed does it some research psychologists are skeptical. • Cathy McFarland and her colleagues (1989) found that Ontario women’s daily mood reports did not vary across their menstrual cycle.
24 hour cycles • Humans experience 24 hour cycles of varying alertness, body temperature, and growth hormones secretion.
90 minute cycles • This chapter explores how we move through various stages of sleep in 90 minute cycles. Smaller animals have shorter sleep cycles.
Works Cited Page • Myers, David G. Myers' Psychology for AP. New York, NY: Worth, 2011. Print.