Simple Summary In mammals, circadian rhythms in nearly all behaviors and physiological
processes are controlled by the suprachiasmatic nucleus, a collection of neurons in the …

Aging is associated with changes in sleep duration and quality, as well as increased rates of
pathologic/disordered sleep. While several factors contribute to these changes, emerging …

The master clock located in the suprachiasmatic nuclei (SCN) of the anterior hypothalamus
regulates circadian rhythms in mammals. The clock is an intracellular, transcriptional …

The mammalian circadian timing system is organized in a hierarchy, with the master clock
residing in the suprachiasmatic nucleus (SCN) of the hypothalamus and subsidiary …

Precise timing in hormone release from the hypothalamus, the pituitary and ovary is critical
for fertility. Hormonal release patterns of the reproductive axis are regulated by a feedback …

The human circadian system consists of the master clock in the suprachiasmatic nuclei of
the hypothalamus as well as in peripheral molecular clocks located in organs throughout the …

Rhythmic events in the female reproductive system depend on the coordinated and
synchronized activity of multiple neuroendocrine and endocrine tissues. This coordination is …

In mammals, it is well established that circadian rhythms in physiology and behavior,
including the rhythmic secretion of hormones, are regulated by a brain clock located in the …

Most physiological processes in our body oscillate in a daily fashion. These include cerebral
activity (sleep-wake cycles), metabolism and energy homeostasis, heart rate, blood …

Endogenous circadian clocks regulate 24-h rhythms of behavior and physiology to align with
external time. The endocrine system serves as a major clock output to regulate various …