sleep
9 stories tagged "sleep"
The Growth Hormone Mice Release in Sleep Circles Back to Wake Them Up
In mice, growth hormone released during sleep makes the brain's alertness center more excitable and pushes the animal toward waking. The viral headline about building muscle and burning fat describes something the study never tested.
Brain & AgingAfter 30 Hours Awake, a 20-Minute Bike Ride Saved About as Much Memory as a 90-Minute Nap
Sleepless volunteers who cycled for 20 minutes recognized nearly as many photos three days later as those given a 90-minute nap, even though the ride left their fatigue markers right where they were.
Brain & AgingWhen the Shocks Stopped, People With Insomnia Got More Aroused, Not Less
In a third analysis of the same Boston volunteers, people with insomnia grew more aroused once the shocks stopped. The signal showed up only after engineers modeled the slow background sweat, and the next-day test missed significance.
Brain & AgingIn a Toronto Husky Study, Owners Moved First More Than Twice as Often as Their Dogs
Earlier sensor studies had the dog moving and the owner following. Among 22 synchronized Toronto owner-dog pairs, the human led in 10 and the dog in 4, and bedsharing showed no significant link to owners' measured sleep.
Brain & AgingBlood Pours Into the Mouse Cortex Seconds Before REM, Then the Neurons Run Low on Fuel Anyway
About 50 seconds before REM sleep starts, blood volume surges across a sleeping mouse's cortex. Then the neurons' usable energy drops sharply anyway, and no one can yet say what they are burning it on.
Brain & AgingI Track My REM Sleep Every Night. This Study Made Me Stop Trusting the Number.
The viral headline says more REM sleep guards you against 83 diseases. But a brain sliding toward Parkinson's shreds REM years before diagnosis, and the study's own two-year exclusion test quietly agrees.
Nutrition & FoodCaffeine Can Flatten Your Deep Sleep While You Sleep Right Through the Night
On caffeine, the slow brain waves that make sleep restorative can thin out even when you fall asleep fast and wake up sure you rested.
Drugs & FDATakeda Fixed the Narcolepsy Drug That Was Poisoning Livers. Now You Can't Buy It.
Oveporexton is the first drug to replace the orexin signal narcolepsy destroys, instead of stimulating around a tired brain. At the higher dose it leaves 60 percent of patients newly insomniac, and it still has to clear DEA scheduling before it reaches a pharmacy shelf.
Brain & AgingLongevity Clinics Sell Growth Hormone by the Vial. In Deep Sleep, Your Brain Makes It Free.
The muscle-building, fat-burning hormone that anti-aging clinics inject at a premium is the same one your hypothalamus releases every night you reach deep sleep. Berkeley mapped how, in mice, and the headline is already running ahead of the biology.