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Person sleeping

AI uses artificial sleep to learn new task without forgetting the last

10 November 2022

Many AIs can only become good at one task, forgetting everything they know if they learn another. A form of artificial sleep could help stop this from happening


Listening to friends tell you about their dreams helps develop empathy

Listening to friends tell you about their dreams helps develop empathy

8 April 2022

Most ideas about the function of dreams involve memory consolidation or managing emotions, but dreams may also serve to increase our sense of togetherness when they are shared with others


Mature man sleeping wearing eye mask close up

Brain cells that regulate wakefulness may become overactive with age

24 February 2022

Brain cells that promote wakefulness fire too much in older mice, which may explain why many people find it harder to sleep as we get older


Person with encephalography electrode

Unknown voices spark more brain activity in sleep than familiar ones

17 January 2022

Unfamiliar voices seem to put the sleeping brain on alert in a way that familiar voices don’t


Science with Sam sleep

Science with Sam: Why can’t we stay awake indefinitely?

27 April 2021

We spend one-third of our lives asleep, but why is it so essential? In this episode, we explain the science of sleep and why we can’t stay awake indefinitely.


Sleeping baby

The purpose of sleep appears to change when we are toddlers

18 September 2020

Sleep in babies seems to mainly help develop new brain connections, but at the age of around two-and-a-half there is an abrupt shift to brain repair


Oxygenated blood (red) in a sleeping brain

A type of brainwave may help clean your brain while you sleep

31 October 2019

Slow waves of electrical activity through your brain may help rinse away its waste products while you sleep. The process seems to go awry in Alzheimer's disease


Your genes help determine how much sleep you need

DNA mutation lets some people live healthily on only 4 hours' sleep

28 August 2019

Studying a family that lives healthily on as little as 4.5 hours of sleep per night has led to the discovery of a gene that controls how much sleep we need


How much sleep do you need?

How much sleep do you need?

7 June 2019

The best sleep is had over the course of a full night


girl jumping

How getting more daylight can improve your mental and physical health

29 May 2019

Spending less time outside and more time in dim artificial light is disrupting our body clocks and undermining our health. The good news? A little daylight goes a long way


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