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 …

Effects of daily physical exercise in the morning or in the evening were examined on circadian
rhythms in plasma melatonin and core body temperature of healthy young males who …

The suprachiasmatic nuclei (SCNs) of the hypothalamus contain a circadian clock that exerts
profound control over rhythmic physiology and behavior. The clock consists of multiple …

Effects of two different light intensities during daytime were examined on human circadian
rhythms in plasma melatonin, core body temperature, and wrist activity under a fixed sleep …

Female reproductive function changes during aging with the estrous cycle becoming more
irregular during the transition to menopause. We found that intermittent shifts of the light-dark …

In the mammalian brain, the suprachiasmatic nucleus (SCN) of the anterior hypothalamus is
considered to be the principal circadian pacemaker, keeping the rhythm of most …

Previous neuroimaging studies that examined cerebral blood flow during rapid eye movement
(REM) sleep have reported inconsistent findings regarding the activity of the dorsolateral …

Considerable attention has been paid to individuals showing social maladjustment as well
as withdrawal from social situations and activity, a state referred to as “Hikikomori” in …

The present study examined the effects of regularizing sleep-wake schedules on sleep,
autonomic function and mood/emotional and personality states in 14 habitually irregular sleepers…

Salivary secretion displays day–night variations that are controlled by the circadian clock.
The central clock in the suprachiasmatic nucleus (SCN) regulates daily physiological rhythms …