Bedroom computers, TV may add to autism sleep issues

NEW YORK -- Kids with autism and related disorders are prone to sleep disturbances but a new study finds that screen time, especially in the bedroom, may make their sleep problems worse.

When researchers compared boys with autism spectrum disorders to other boys, they found that all the kids with bedroom access to media slept fewer hours, but the relationship was twice as strong for the boys with autism.

"In-room media access was associated with about 1.5 fewer hours of sleep per night in the group with autism," said Christopher R. Engelhardt, who led the study at the University of Missouri-Columbia.

"This association can potentially be problematic, particularly if the reduction in sleep interferes with other daily activities, such as school, homework, interactions with other people, or driving," he told Reuters Health in an email.

Past studies suggest that up to 80 percent of kids with autism, and related conditions like Asperger syndrome, experience sleep troubles, including difficulty falling asleep or staying asleep through the night. Children with attention deficit hyperactivity disorder also are known to have a high rate of sleep disturbances.

With both conditions, it's unclear why sleep is so difficult. Theories include a disruption in sleep-wake cycles that are regulated by the hormone melatonin, which is often deficient in kids with ASDs, Engelhardt and his colleagues write in Pediatrics.

Because kids with autism spectrum disorders, like those with ADHD, also tend to spend a lot of time watching TV and playing video or computer games, the researchers wondered whether that could be contributing to their sleep problems.

So they recruited the parents of 49 boys with autism spectrum disorders, 38 with ADHD and 41 comparison boys with typical development to fill out questionnaires about their children's bedroom screen access and sleep patterns. All the kids were between ages eight and 17.

Boys with autism who had TV, computers or video games in their bedrooms got less sleep than all the other boys, including boys with autism who didn't have media in their bedrooms.

Without a TV in their room, boys with autism spent an average of about nine hours sleeping, compared to less than eight hours among kids with an ASD and a bedroom TV.

In contrast, bedroom TVs didn't seem to make a difference for boys with ADHD or typical development.

Boys with autism with computers in their rooms slept nearly two hours less than boys with autism and no bedroom computer.

A lot of time spent playing video games, regardless of where they were located, was also linked to shorter sleep times among boys with ASDs.

Even for typical children, too much time with TV or video games has been linked to attention problems, hyperactivity, arguments and physical fights, Engelhardt said.

"We can't say that access to a TV causes less sleep," only that the two are linked for some kids, he said.

Last month, the American Academy of Pediatrics called for limiting screen time for all kids to one or two hours per day.

"This is a good recommendation for all children," Dr. Beth Marlow, Burry Chair in Cognitive Childhood Development and director of the Sleep Disorders Division at Vanderbilt University Medical Center in Nashville, Tennessee.

"Following this recommendation for kids with (autism spectrum) and ADHD is good, although children with (autism spectrum) or ADHD who are still having difficulty with sleep despite limiting electronics really deserve a sleep evaluation by their pediatrician or sleep specialist."

Sleep troubles can also stem from anxiety, sleep apnea, pain that the child might not be able to express, gastrointestinal problems or seizures, she said.

For typically developing kids, bedroom TV access doesn't usually seem to cut into sleep.

"However, (Engelhardt's) finding for teens with ASD concurs with our clinical impressions -- that these teens have difficulty 'switching off' videogames," Michael Gradisar said.

Gradisar is a clinical psychologist who studies technology use and sleep, especially among teens, at Flinders University in Adelaide, South Australia.

"Many teens have a distorted sense of time passing when playing videogames, however, it may be that this time distortion is stronger for teens with ASD," he said.

Parents can have a tough time managing how much their children play games or watch TV, he said. "It may take quite some time to do, but one option is for parents to introduce other hobbies and activities into their teens lives, so that videogaming eventually occupies less time."

People with autism tend to spend more time with media outlets, researchers think, because the electronic worlds have engaging audio and visual features and their social interactions are easy relative to real life interactions.

This doesn't necessarily mean that parents should take TVs or video games out of their autistic children's rooms, but might consider limiting or monitoring media consumption, he said.

"Screen media can certainly be good for kids with autism," he said. "Scientists have long known that video games are great at teaching and reinforcing certain behaviors, so it's possible that these games can be used to adjust and shape the types of behaviors generally valued by society, such as behaviors intended to help others."

source: interaksyon.com

Good night's sleep cleans out gunk in brain

LOS ANGELES — When we sleep, our brains get rid of gunk that builds up while we're awake, suggests a study that may provide new clues to treat Alzheimer's disease and other disorders.

This cleaning was detected in the brains of sleeping mice, but scientists said there's reason to think it happens in people too.

If so, the finding may mean that for people with dementia and other mind disorders, "sleep would perhaps be even more important in slowing the progression of further damage," Dr. Clete Kushida, medical director of the Stanford Sleep Medicine Center, said in an email.

Kushida did not participate in the study, which appears in Friday's issue of the journal Science.

People who don't get enough shut-eye have trouble learning and making decisions, and are slower to react. But despite decades of research, scientists can't agree on the basic purpose of sleep. Reasons range from processing memory, saving energy to regulating the body.

The latest work, led by scientists at the University of Rochester Medical Center, adds fresh evidence to a long-standing view: When we close our eyes, our brains go on a cleaning spree.


The team previously found a plumbing network in mouse brains that flushes out cellular waste. For the new study, the scientists injected the brains of mice with beta-amyloid, a substance that builds up in Alzheimer's disease, and followed its movement. They determined that it was removed faster from the brains of sleeping mice than awake mice.

The team also noticed that brain cells tend to shrink during sleep, which widens the space between the cells. This allows waste to pass through that space more easily.

Though the work involved mouse brains, lead researcher Dr. Maiken Nedergaard said this plumbing system also exists in dogs and baboons, and it's logical to think that the human brain also clears away toxic substances. Nedergaard said the next step is to look for the process in human brains.

In an accompanying editorial, neuroscientist Suzana Herculano-Houzel of the Federal University of Rio de Janeiro said scientists have recently taken a heightened interest in the spaces between brain cells, where junk is flushed out.

It's becoming clearer that "sleep is likely to be a brain state in which several important housekeeping functions take place," she said in an email.

The study was funded by the National Institute of Neurological Disorders and Stroke. In a statement, program director Jim Koenig said the finding could lead to new approaches for treating a range of brain diseases.

source: philstar.com

Sleep helps brain stay fit by clearing waste

WASHINGTON - Like a janitor sweeping the halls after the lights go out, major changes occur in the brain during sleep to flush out waste and ward off disease, researchers said Thursday.

The research in the journal Science offers new answers to explain why people spend a third of their lives asleep and may help in treating dementia and other neurological disorders.

In lab experiments on mice, researchers observed how cellular waste was flushed out via the brain's blood vessels into the body's circulatory system and eventually the liver.


These waste products included amyloid beta, a protein that when accumulated is a driver of Alzheimer's disease.

In order to help remove the waste, cerebral spinal fluid is pumped through brain tissue.

The process is sped along during sleep because the brain's cells shrink by about 60 percent, allowing the fluid to move faster and more freely through the brain.

The whole operation takes place in what researchers call the glymphatic system, which appears to be nearly 10 times more active during sleep than while awake.

"The brain only has limited energy at its disposal," said lead author Maiken Nedergaard of the University of Rochester Medical Center.

"You can think of it like having a house party. You can either entertain the guests or clean up the house, but you can't really do both at the same time."

Co-authors of the study, which was funded by the US National Institutes of Health, came from Oregon Health and Science University and New York University.

source: interaksyon.com