One of the strange defining factors of dreaming is how our brainwave activity during this important stage of sleep resembles that of a waking brain. Because of this it has been difficult for ...

Sleep is not just a period of rest, but a time when our brain actively works to organize our memories. A recent study ...

Medically reviewed by Smita Patel, DO Sleep is essential to memory function. Insufficient sleep makes concentrating, ...

It’s difficult to know how common sleepwalking is. In 2016, Helen Stallman and Mark Kohler conducted a systematic review of studies on sleepwalking. They explain there are many reasons measuring ...

Young jumping spiders dangle by a thread through the night, in a box, in a lab. Every so often, their legs curl and their spinnerets twitch—and the retinas of their eyes, visible through their ...

Rapid eye movement (REM) sleep brings about brief but periodic awakenings. In 1966, Dr. Frederick Snyder reported the "sentinel" function of REM could help animals prepare a fight or flight response ...

In some of those cases, lucid dreaming should be practiced under the care of a qualified expert, Weiss says. She recommends ...

TMT argues that human beings, uniquely among the animals have a kind of awareness of death that could be psychically paralyzing if that awareness was allowed to intrude into our daily thoughts ...