The human sleep pattern is paradoxical. Sleep is vital for optimal physical and cognitive
performance, yet humans sleep the least of all primates. In addition, consolidated and …

Sleep is a behavioral state whose quantity and quality represent a trade-off between the
costs and benefits this state provides versus the costs and benefits of wakefulness. Like …

Sleep studies in small-scale subsistence societies have broadened our understanding of
cross-cultural sleep patterns, revealing the flexibility of human sleep. We examined sleep …

How and why did humans get to be so clever and thoughtful? The beginning of the Stone
Age, marked by the invention of stone tools, has traditionally dominated discussions about …

Given the contributions of sleep to a range of health outcomes, there is substantial interest in
ecological and environmental factors, including psychosocial contexts, that shape variation …

Sleep duration, quality, and rest-activity pattern—a measure for inferring circadian rhythm—
are influenced by multiple factors including access to electricity. Recent findings suggest that …

Human sleep is regulated by light in two fundamental ways: The light-dark (LD) cycle
entrains a circadian clock that in turn regulates sleep timing, and light per se can acutely …

The past few years have witnessed a growing interest in the impact of artificial light on
human sleep timing and human sleep ecology. Scores of reports have characterized sleep …

Many public health recommendations suggest that technology devices should not be used
in the 1-hour before bed. However, it is no secret that the use of technology is ubiquitous in …

Objectives To characterize sleep and circadian rhythms of a sample population of healthy,
dog-owning adults from North Carolina, USA. Methods Actigraphy was used to analyze …