This video segment adapted from NOVA scienceNOW considers the purpose of sleep and, in particular, the connection it shares with memory. By studying the dreams of rats, researchers are hoping to gain ...

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Sleep is one of the most widely studied states of consciousness, known to play a role in physical recovery, the processing of memories and the regulation of immune functions. During sleep, the brain ...

In humans, aging is often associated with changes in sleeping patterns, cognitive abilities and functional network connectivity (i.e., the strength with which activity in different brain regions ...

Add Yahoo as a preferred source to see more of our stories on Google. President Trump's first 30 days in office have been described as historic. Sleep, or the lack thereof. Since his first presidency, ...

Though sleep disturbance constitutes the risk factor for Alzheimer’s disease (AD), the underlying mechanism is still unclear. This study aims to explore the interaction between sleep disturbances and ...

Sleep is assumed to subserve homeostatic processes in the brain; however, the set point around which sleep tunes circuit computations is unknown. Slow-wave activity (SWA) is commonly used to reflect ...

Share on Pinterest Data from five population studies suggest that better sleep may help protect cognitive function in adults. Image credit: ismagilov/Getty Images. A new analysis looking at data from ...

Studies suggest that for optimal health, it's best to go to sleep and wake up at roughly the same time each day.

In the last several years, books and articles have increasingly drawn attention to the key role of sleep in preserving good health. In the long run, better sleep may have protective effects on risk ...

Sleep needs vary dramatically between individuals, with genetics and lifestyle playing bigger roles than previously understood In a world that often glorifies hustle culture and productivity hacks, ...

When the Apple Watch was new, Apple decided to market it as a fitness device. But it’s increasingly become a more general personal-wellness device with the addition of features like deep breathing, ...