Light can elicit acute physiological and alerting responses in humans, the magnitude of which
depends on the timing, intensity, and duration of light exposure. Here, we report that the …

The circadian rhythms of melatonin and body temperature are set to an earlier hour in women
than in men, even when the women and men maintain nearly identical and consistent …

Ocular light exposure has important influences on human health and well-being through
modulation of circadian rhythms and sleep, as well as neuroendocrine and cognitive functions. …

The reduction of electroencephalographic (EEG) slow‐wave activity (SWA) (EEG power
density between 0.75–4.5 Hz) and spindle frequency activity, together with an increase in …

Learning-dependent increases in sleep spindle density have been reported during
nocturnal sleep immediately after the learning session. Here, we investigated experience-dependent …

The effects of sleep pressure and circadian phase on neurobehavioral function can be
sensitively measured with the psychomotor vigilance task (PVT). We compared PVT performance …

Light strongly influences the circadian timing system in humans via non-image-forming
photoreceptors in the retinal ganglion cells. Their spectral sensitivity is highest in the short-…

Lighting conditions in workplaces contribute to a variety of factors related to work satisfaction,
productivity and well-being. We tested whether different photometric variables also …

Endogenous rhythms of circalunar periodicity (∼29.5 days) and their underlying molecular
and genetic basis have been demonstrated in a number of marine species [1, 2]. In contrast, …

Daylight is ubiquitous and is crucial for mammalian vision as well as for non-visual input to
the brain via the intrinsically photosensitive retinal ganglion cells (ipRGCs) that express the …