Sleep comprises one third of our adult life. It is essential for normal functioning; without it, we experience memory lapses, have difficulty with concentration, experience mood alterations, become ...

Add Yahoo as a preferred source to see more of our stories on Google. The amount of time required to fall asleep is known as SOL or sleep onset latency. “Generally, a normal sleep latency is somewhere ...

As you get older, it's normal to notice changes in your sleep. These can include fewer hours of shuteye, waking up more during the night, and finding it harder to drop off. However, despite the ...

In the early 1990s, historian Roger Ekirch came across a strange phrase while reading through a testimony about a ...

Sleep is an incredible physical process. There is an early night surge of growth hormone to restore muscle and a slow drop in ...

A team has discovered that, in an animal model of Alzheimer's disease, restoring normal sleep by returning to normal the activity of the thalamic reticular nucleus (TRN), a brain region involved in ...

You may remember little to nothing when you wake up, but there’s a lot going on while you sleep. You just spent the previous seven to nine hours moving through a highly structured cycle of sleep ...

What happens in the brain when our conscious awareness fades during general anesthesia and normal sleep? Scientists studied this question with novel experimental designs and functional brain imaging.

Multiple studies in humans and mouse models indicate that sleep disruptions raise the risk of Alzheimer's disease (AD) by increasing the accumulation of disease-relevant proteins such as amyloid-beta ...