People who sleep longer and spend more time in the rapid-eye-movement stage report richer, more emotionally charged dreams, according to converging evidence from federal health agencies and ...

A recent study suggests that zebrafish have four sleep substates, just like humans do—and one of them is akin to an afternoon ...

If you frequently wake up throughout the night, you may not be going through all the stages of sleep, according to experts. Interrupting your sleep mid-cycle can disrupt your body and leave you ...

In the quiet hours of the night, while your body rests, your brain is busy. It's sorting through the day's moments, filing some away as lasting memories, and brushing off others. Scientists have long ...

Just before the age of 2-and-a-half, rapid eye movement (REM) sleep's primary function is to build the brain's infrastructure by strengthening or pruning experience-dependent synapses; this neural ...

"Seeing eye to eye" is an expression of harmony, but do different people literally see the same thing when they view the same external world? The rapid eye movements during a mouse's REM sleep provide ...

Sleep is such an important part of leading a healthy life. Unfortunately, not many people get the quality sleep they need to support healthy brain and body functions. In fact, a study from 2015 found ...