In the context of Advanced Placement Psychology, a hormone produced by the pineal gland plays a significant role in regulating sleep-wake cycles. This naturally occurring substance responds to darkness, increasing production in the evening to promote sleepiness and decreasing production in the morning to facilitate wakefulness. As an example, exposure to bright light at night can suppress its production, disrupting normal sleep patterns.
Understanding this hormone is crucial for comprehending biological rhythms and sleep disorders. Its impact extends to areas such as jet lag, seasonal affective disorder (SAD), and insomnia. Historically, the discovery of its function provided a biological basis for understanding and treating certain sleep-related issues, highlighting the interplay between physiology and behavior.
