Some mornings, waking up might feel like interrupting a vivid alternate universe. You open your eyes to reality, but the ...

Taking longer to get to deep sleep or REM sleep can disrupt memory consolidation and emotional processing, affecting overall ...

During non-REM sleep, participants received auditory cues to reinforce positive memories and reduce negative ones.

A study published in the Proceedings of the National Academy of Sciences journal found good news for people looking to forget ...

The frequency and duration of large muscle group leg movements during sleep change over time, and show distinct sleep stage differences.

A brand new candidate for weight-loss treatment is on the table, with scientists uncovering for the first time how a hormone ...

Earlier studies done mostly on mice discovered that the brain had a system that flushed its tissues with cerebrospinal fluid, which carried away waste products in a process called glymphatic clearance ...

Yet stages 1 through 4 have been labeled as non-REM sleep, or NREM—80 percent of sleep is defined by what it’s not. Sleep scientists speculate that specific sequences of NREM and REM sleep ...

Every minute or so during non-rapid eye movement (NREM) sleep, the brain releases a wave of norepinephrine, a hormone that is one of the brain’s primary neurotransmitters. Norepinephrine is a ...

Essentially, sleep is divided into two stages – non-rapid eye movement (non-REM, which the researchers refer to as NREM) sleep and REM sleep – and it's widely understood both play distinct ...

A specialized system sends pulses of pressure through the fluids in our brain. A specialized system sends pulses of pressure through the fluids in our brain. A specialized system sends pulses of ...