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
my dear hindu brother and sister dont blive in RSS they are not fighting for hindus they are fight to bring back the bristish rule bcoz they love thm bcoz they get everything wht they frm thm so they want thm back thz the reason they celebrate birth anniversry of killer our father of our nation tippu was curel for british and also for the people who support the british thtz y RSS says tht tippu is curel
India need another brave like Tipu sultan to eradicate RSS from the country.
RSS quotation itself proves that world has no matching personality like TIPPU for Nationalism and defence of country. For British - Tippu, Bhagat Singh, Sukhdev, Ashfakullah Khan, Ghandiji, S.C. Bose... the list is endless.... all were Terrorists. It was Timid Savarkar and Hindutva fascists joined hands with British, worked against mother India and responsible for the massacre of thousands of Freedom Fighters of India. Till today these anti-national forces neither recognised Secular India, nor constitution, tricolour flag, national anthem.. rather they use all these to destroy Secular India. Founder of RSS openly said NOT TO FIGHT AGAINST BRITISH and advocated his goons to fight against Muslims. This is the history of RSS & British
Why siddana and his chelas want to celebrate this coward tippu jayanti.......hope siddana want to make karanataka islamic state by apeasing minority community.....!
This is what RSS is , RSS didn't want independence coz they had a close with British , British even killed Bhagat Singh , Raj guru and sukhdev as traitor but we Indians still treat them as freedom fighters , I think RSS treat them as cruel ????
Shame on u bloody RSS people , you guys have no rights to be in india h better go to ur British bhais.
Dear Cheddies (Now Pantees),
who brought Silk from Persia to India....how many farmers are living beacuse of silk in India...just think it....
I think Cheddis were hand to hand with British against whome nationalist were fighting during independence
Britishers know that because of tipu. India got independence.
To British, Mahatma Gandhi was a traitor & an enimy !
Every patriot was an enimy !
Nathuram Godse was a murderer ! Why should anyone need a lesson by those who celebrate Mahatma's killers jayanti??
Now RSS and British are Bhai Bhai (Brother's).
We got Independent on 1947 But for RSS Chaddis they lost their Freedom on 1947.Wa Re Wa Chaddis.
What if the Tipu was a Hindu. The tune of RSS would be different.
Apna cheddy nahi Sambhal sake. Abhi pant per uthargaye.
All Indians fully understand that the RSS was actively in support of the British, and did ABSOLUTELY NOTHING to fight for India's independence from colonial rule. Its a known fact that USA has already enlisted RSS a terror group and has to be banned.
If he is cruel for british then of curse is hero for Indians.
If in front of RSS, Mahatma Gandhi is criminal, who else is good fro them.
RSS needs high level medical treatment. This is true not joke.
Whoever discussing any subject where RSS is involved, it is waste of time and finally it is stupidity to talk to them.
Just see what they did to Mahatma Gandhi and how they are glorifying his assassin Naturam Godse.
Unfortunately it is our unluck, still in India the majority of the people are their supporters therefore they were able to keep their puppet BJP in centre.
God, give them wisdom.
Who is British - Grand fathers of rss - they jointly involved in the cruel murder of our father of nation - GANDHI - they are the supporters for anti nationals and hindu terroristssss
British people considered all freedom fighters as cruel. Do you think all freedom fighters are cruel. in fact You guys are cruel. killed mahatma gandhi and other human beings in riots. RSS is following the foot step of Zionist, Nazism. they are deceiving people.
Oh yeah... Your savarkar / glovalkare was following British rules and they were feared of British rulers,. But Shahid Tippu was real tiger / hero of india / world. so british was too worried. Common man bloody RSS now wana prove based on British comments. hehehh.. shameless people. Being a tippu not a Savarkar
Yes ... This is the real face of the cheddis which was hidden for long time..the cheddis will follow their chachas (British) who want to rule over the people just like they used to rule over india and take all the resources and enjoy their life by making others to enslave them...
The hindus who think RSS is fighting for hindus is just a deception... U will surely see this in the near future...
Add new comment