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
South Kanara police are doing wonderful job around...now they must take action against those bajrangies who had done ugly job around this incident....
In this case book the hate mongers and levy heavy penalty on them. They should be jailed for not less than 10 years with penalty of not less that 50 lacs for the loss of property done by the follower of these hate mongers. Take away their voting right and kick them out of karnataka.
If there are no instances of forcible conversions, what action they are going to take against those who accuse without any evidences? What action they are going to take against those hate mongers who incite communal hatred by using falsified allegations? At least a warning that it won't be repeated again or an public apology?
Now a days, Poojary's, Shankaracharya's Are converting to islam.
https://www.youtube.com/watch?v=3rJZWrX-fzk
Crorepati acharya Sanjay dwiwedi, who converted to islam, and preaching islam. Now leading a common life
@viren
UK's No 1 News channel
http://www.dailymail.co.uk/news/article-1343954/100-000-Islam-converts-…
There is no force involved to convert to islam in anywhere of
If nothing is found by the Police, then why these dogs are barking in Kalladka ???/ ...
Dear brother Viren Naren
Please use your intellect that God has given U before it perishes with God's permission... Atleast PONDER on what PREM says and research on it before spreading your VeNOM without knowledge of ISLAM in this forum...
TRUTH will prevail however u try to deceive people... Anyway try your best but also note that U need to look into QURAN before making enemies with the TRUTH.
Without knowledge of your enemy ... U look Dumb.
Viren Kotian,
Who's forcing you to accept Islam???
But, you can be booked for inciting communal hatred between communities using this forum.
Prem and true (anti) Indian are doing religious propaganda here. coastaldigest.com should not entertain such comments. This is not a religious forum. They are encouraging religious conversions. DK police should take necessary action against such comments.
ISLAM is the only religion accepted by God...
Eternal life begins when death happens...
Dont worship the creation of God, thats the only sin which will not be forgiven by God... (associating partners with God...)
Know who is our CREATOR before bowing down to created things..
God is merciful and most compassionate... A honest heart will find God if his intention is right to know about God...
To know about God and his attributes read religious scripture specially the QURAN (the quranproject online) a manual to MANKIND... Read to understand about Creator not to Hate... please, as a human brother ... keep away your hatred and make effort to know who is our CREATOR rather than falling prey to some hate mongers...
USE YOUR GOD GIVEN INTELLECT...
Surah barakah 2:256
There shall be no compulsion in [acceptance of] the religion.
Forcing anyone to convert is not allowed in islam.
No other religion book says so.
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