Sleep is one of the most widely studied states of consciousness, known to play a role in physical recovery, the processing of ...

But during REM sleep, when the noradrenergic and serotonergic systems are turned off, these memories can be moved into the "familiar" storage without experiencing the physical "fight or flight" ...

REM stands for rapid eye movement — a stage in the sleep cycle when your brain is almost as active as when you're awake. Getting enough REM sleep is crucial, as it helps you store information and ...

Sleep deprivation, influenced by lifestyle factors such as shift work, psychosocial stress, and excessive electronic media use, poses a significant public health challenge in modern society [1].

Scientists have recently shown that both the quality and the amount of sleep we get may influence our risk of developing Alzheimer’s disease. Now, a study suggests that people who take significantly ...

Cholinergic activity supports cortical activation during REM sleep, while other neurotransmitter systems are almost silent. Here, we tested the long-standing hypothesis that early cholinergic ...

Waking up unable to move or speak can feel like a stroke. Experts explain why sleep paralysis occurs, how it differs from a ...