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Tag: sleep

Brain organizes forgettable, indelible memories during sleep

Brain organizes forgettable, indelible memories during sleep

Science
Oct. 5 (UPI) -- Previous studies have highlighted the important role sleep plays in learning and memory formation. New research suggests, during sleep, a person's brain replays memories that go un-recalled when awake. For their study, neuroscientists in Germany recruited epilepsy patients electrodes implanted in their brains for surgical planning. The electrodes allowed scientists to precisely record brain activity patterns. Researchers had participants memorize a series of images. Each image was associated with a unique pattern of brain activity. Later, scientists measured the participants' neural activity while they napped. Researchers were able to recognize the gamma band activity signatures of each images. Their analysis showed, during sleep, the participants' brains reimagined each o...
Too much screen time, too little sleep linked to child development problems: Study

Too much screen time, too little sleep linked to child development problems: Study

Health
The average American child spends 3.6 hours staring at a computer, television, tablet, or smartphone daily -- an amount of screen time associated with inferior cognitive development and academic performance, according to a new study of over 4,500 children between the ages of eight and 11 published yesterday in The Lancet Child & Adolescent Health. The study was conducted by Canadian researchers, but examined children in the U.S. using the Canadian 24-Hour Movement Guidelines for Children and Youth. Those guidelines recommend that children get nine to 11 hours of uninterrupted sleep, less than two hours of screen time and at least one hour of physical activity every day. The children who scored best on tests for assessing language abilities, memory, executive function, attention, and proc...
Children sleep on floor in cages of US border 'prison'

Children sleep on floor in cages of US border 'prison'

World
Young migrant children, many of whom have been taken from their parents' arms, are being kept in cages in facilities along the southern US border, according to journalists who were allowed inside. The Border Patrol responded to criticism and protests over US President Donald Trump's "zero tolerance" policy for illegal immigrants by allowing the visit to the facility in south Texas.Photos from inside a former warehouse the media were given access to showed people divided into separate wings for unaccompanied children, adults on their own and mothers and fathers with children. Image: A young girl is given some soup at a migration centre in Texas Associated Press reported that the lights stay on for 24 hours a day and the...
Study links fish consumption with higher IQ, better sleep

Study links fish consumption with higher IQ, better sleep

Health
Dec. 21 (UPI) -- Kids who eat fish at least once a week score higher on IQ tests and experience better sleep, according to new research by scientists at the University of Pennsylvania.Omega-3s, fatty acids found in fish, have previously been linked individually to boosts in intelligence and improved sleep. But the latest study -- published this week in the journal Scientific Reports -- is one of the first to examine the relationship between all three variables."This area of research is not well-developed. It's emerging," Jianghong Liu, an associate professor of nursing and public health at Penn, said in a news release. "Here we look at omega-3s coming from our food instead of from supplements."The study included 541 children in China, ages nine to 11, 54 percent boys and 46 percent girls. ...
What to eat, and what not to eat, for a good night's sleep

What to eat, and what not to eat, for a good night's sleep

Health
How well you sleep can have a significant impact on your overall health, and not getting enough sleep has even been linked to overeating, according to ABC News' senior medical contributor, Dr. Jennifer Ashton. Ashton appeared live on "Good Morning America" today to share why it is so important for adults to get seven to nine hours of sleep a night, saying that insufficient sleep impacts your hunger and fullness hormones. When you're not getting enough sleep, the level of ghrelin, the hormone that tells your brain when it's time to eat, increases. In addition, the level of leptin, the hormone that tells your brain when to feel full, decreases. As a result, sleep deprivation can lead to overeating and gaining extra pounds, according to Ashton. If you find yourself especially hungry late...