Introduction The biological clock, or circadian rhythm, is a fundamental aspect of life on Earth. It is an internal process that regulates the daily activities of organisms, including humans, to adapt to the environment and its changing conditions. The biological clock is a complex system that is regulated by genetic, physiological, and environmental cues. It […]
Introduction to Activity Cycles and Chronobiology Activity cycles represent the fundamental, periodic variations observed in an organism’s behavior, physiology, and biochemistry. These cycles are critical adaptations that allow living systems to anticipate and respond effectively to the predictable, cyclical changes in the external environment, primarily the rotation of the Earth, which dictates the shift between […]
Definition and Overview of the Suprachiasmatic Nucleus (SCN) The Suprachiasmatic Nucleus (SCN) is a minute yet vitally important bilateral structure located in the anterior part of the hypothalamus, situated directly above the optic chiasm. Functionally, the SCN serves as the primary and most dominant component of the central pacemaker system, often referred to as the […]