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.
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anybody got their grevences answered here
corporation lights of cemetrey not glowing since two months. On 1st November 2019 is holy souls day. Kindly repair the lights at the earliest.
Fr. Joseph J. Lobo
Parish Priest
Street light is not working since 15 days. On 23rd July 2019 complaint lodged with Mobile No7353933410. Till date they are not responding
hello / madam
Keeping the city clean is our duty. I know not everybody is following that. We need some awareness program
to keep our city clean green and hygenic. Its our duty to keep the environment clean and place around us.
But it is also the duty of Corporation to maintain the cleanliness aroud the city, in some parts of the city like market, near clock tower circle its not been getting cleaned from past few days. Please do the needfull for betterment of tomorrow
thank you
Dear Madam, I have purchased 1 BHK flat in Green City, Vamadapadav on October, 2013 and paid full amount to builder T3 Urban Developers LTD. As per agreement possession was in December, 2015 but still building is not ready.
There were 5 buildings in Green City and at a time builder started 3 buildings construction work. I have purchased middle of the building and that building 1st floor slab only completed and since long time work stopped.
Last year builder agreed to give me flat in 1st building but building’s interior work is still pending and since 1 year work totally stopped.
Presently builder is not picking call or not responding for query. It seems that he is cheating with me. Kindly help me to resolve this issue. I will be grateful to you.
Sir/Madam,
Four street lights are not working on Raghavendra Matt Road, Hosabettu, Surathkal since long.
The roads are in Shabby condition and hence difficult in the night to Padastrians.
Kindly arrange to replace the treet lights on Main road, Raghavendra Matt Road, Hosabettu, near and after the Areca Field.
the kalbavi road in kottara ashok nagar was provided with ugd pipe line during last year. as usual the centre of road was dug up in march 2018 for this purpose making the road not motorable during the monsoon of 2018.
the asphalt work is now planned now during nov2018 by mcc. this road is very narrow and not having the foot path or road side drain at all.
both the ugd agency as well as the asphalting agency have put the muck/soil on the sides of the road, making it now impossible to walk when there is traffic. also during monsoons , storm water from the entire stretch for about 500 ft will flow on this road itself which is diverted to my compound/pure water sump due to the faulty work of mcc.
in spite of repeated requests/complaints to the commissioner,corporators, engineers of mcc, publishing of the photos of the same in some news papers,action is yet to be taken.
now at least it is requested to remove all the above dumped muck /soil on either sides of this road which is also preventing the entry of monsoon water th the existing drain near the starting point of sagar court.
Street light not working at kulai kavinakallu 2nd street
Relevant department has to look into the matter seriously and work on it and mark the matter as closed so that its notified as closed. Its a good move for public and public workers to work hand in hand
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