Washington D.C., May 8: The prime time for brain development in a child's life is the first year, where the infant spends most of the time asleep. It is the time when neural connections form and sensory memories are encoded.
However, when sleep is disrupted, as occurs more often among children with autism, brain development may be affected, too.
New research led by the University of Washington finds that sleep problems in a baby's first 12 months may not only precede an autism diagnosis but also may be associated with altered growth trajectory in a key part of the brain, the hippocampus.
The study, which was published in the American Journal of Psychiatry, researchers report that in a sample of more than 400 taken of 6- to 12-month-old infants, those who were later diagnosed with autism were more likely to have had difficulty falling asleep.
It also states that this sleep difficulty was associated with altered growth trajectories in the hippocampus.
"The hippocampus is critical for learning and memory, and changes in the size of the hippocampus have been associated with poor sleep in adults and older children.
As many as 80 per cent of the children with autism spectrum disorder have sleep problems," said Annette Estes, director of the UW Autism Center and senior author of the study.
"In our clinical experience, parents have a lot of concerns about their children's sleep, and in our work on early autism intervention, we observed that sleep problems were holding children and families back," added Estes, who is also a UW professor of speech and hearing sciences.
"It could be that altered sleep is part-and-parcel of autism for some children. One clue is that behavioural interventions to improve sleep don't work for all children with autism, even when their parents are doing everything just right. This suggests that there may be a biological component to sleep problems for some children with autism," said Estes.
To consider links among sleep, brain development, and autism, researchers at the IBIS Network looked at MRI scans of 432 infants, surveyed parents about sleep patterns, and measured cognitive functioning using a standardized assessment.
At the outset of the study, infants were classified according to their risk for developing autism: Those who were at higher risk of developing autism -- about two-thirds of the study sample -- had an older sibling who had already been diagnosed.
Infant siblings of children with autism have a 20 per cent chance of developing autism spectrum disorder -- a much higher risk than children in the general population.
In the current study, 127 of the 432 infants were identified as "low risk" at the time the MRI scans were taken because they had no family history of autism.
They later evaluated all the participants at 24 months of age to determine whether they had developed autism. Of the roughly 300 children originally considered "high familial risk," 71 were diagnosed with autism spectrum disorder at that age.
Problems with sleep were more common among the infants later diagnosed with an autism spectrum disorder, as were larger hippocampi. No other subcortical brain structures were affected, including the amygdala, which is responsible for certain emotions and aspects of memory, or the thalamus, a signal transmitter from the spinal cord to the cerebral cortex.
The authors note that while parents reported more sleep difficulties among infants who developed autism compared to those who did not, the differences were very subtle and only observed when looking at group averages across hundreds of infants.
Sleep patterns in the first years of life change rapidly as infants transition from sleeping around the clock to a more adult-like sleep/wake cycle. Until further research is completed, Estes said, it is not possible to interpret challenges with sleep as an early sign of increased risk for autism.
Comments
@Thinker, Of course we(Muslims) are 'minority', but far enough to face 'majority' in the election. As the majority are split according into many caste.
Time is no far to unite the Muslims in 1 platform to gain the ultimate political power and i
MA SHA ALLAH Proud to be a MUSLIM! Many more people are there to revert In Sha Allah.. Its Allah who is helping us..
If you notice the statistics, all these communities belong to Hinduism and further these communities are treated as separate or individuals. The culture including worships are also different.
Where as Muslims have though different languages, they are considered as single community because of single method of worship where singular God is their one and only God.
Surprisingly because of this fact, their share is increasing due to attraction to people of other communities. There is no worry in the end, because gradually everyone will know the truth and everyone will belong to the same (that) community, so no difference and no communal hatred at the end.
\ It is HE who has sent the Messenger with Guidance and the religion of Truth, to manifest it Over ALL RELIGIONS, how much ever the unbeliever might not like it ....\" (Qur'an - Ch 9:33)"
Thinker Hell.....
Come out of hell..So called bramins are less in number but ruling all hindus in the name of God. And what else you want???
Beware dear..chaddeezz....
However the MEDIA malign MUSLIM with false images.... Muslims around the world are increasing and it will increase rapid in the coming Years In Shaa ALLAH. The irony is that Many people understood the MEDIA conspiracy did by the IT professional by Cheddi deceivers. Many people learnt more about ISLAM and the reality and the Fact. Muslims are growing not in their own but also many non muslims are converting to ISLAM by learning & getting knowledge of the CREATOR who created us... Those who worship the creator are successful. Those who worship the created things are need to learn who is our CREATOR who CREATED all that exists.
Frankly speaking I trust this portal (i.e. Coastal Digest) right from the beginning only because it published fact news to convey the readers.
Today when I read the above news I am really surprised to know the facts with figures. Even a common man can understand the political power of each community.
Though we (Muslims) constitute a huge number (75 Lac), Very sad know our M.L.A's are just 11 in number which is equal to nothing. Our community is very much backward in political power.
Currently 'Power of Powers' in one and only i.e. \ POLITICAL POWER\". Let all of us think and act for the uplift of the community & our fellow kannadigas by choose a existing political party in fray."
In sha allah soon it will come to No 1 Place
please convey this messege to other media, they have lack of knowledge in getting news
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