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
o Muslims you are not powerless, may be govt running is bigger than us but you are not powerless. many people are waking up and realizing that Islam is wonderful religion, full of honor & dignity. As Muslims we have a lot job to do. RSS is in business of dominating our country and they are using state resources to kill Muslims and elect those who kill Muslims. We need to carry the message of Islam not the message of violence. RSS want Hindus to live in a state of fear where they can manipulate and manage them. Govts we have here now have become hypocrite. if govt. is truly democratic it should work for people.
Now things are manageable. No meaning in scratching the head when things become not manageable. We need Hindus to sit down and read Quran once in their life time. Quran is way of life and is system of life which actually works. Stop the fear of Islam. Islam is not your enemy. Islam doesn't send you bills to your door step. Islam doesn't kill you when you drive on the road in the morning. We must stop the business of blaming Islam & Muslims. If we do not something quickly then we will be in state of fear which you wont believe and it will be such a dark place to live because money & power may be major problem which is going to come to the mankind. rich & poor gap is widening. Allah knows best. May Allah guide us all. Ameen
This chap was the HM that time , why didnot he stop ? no he is coming and telling the biggest lie ... no wonder congress got tight slap ... 100% we will ensure they will lose karnataka and kerala too ..kerala they have alliance with muslim league , which divided our nation . so midset is clear
they want rashtradrohis vote , so they can get into any level ... same afzal guru encouraged millitants to rape and kill innocent kashmiri pundiths ... more than 10,000 pundith womens were raped by islamic thugs and more than 60,000 killed and more than million driven out of kashmir ...
If sanjaydath is Muslim then definettly excuted
O MUSLIMS YOU ARE NOT POWERLESS, MAY BE GOVT RUNNING IS BIGGER THAN US BUT YOU ARE NOT POWERLESS. MANY PEOPLE ARE WAKING UP AND REALIZING THAT ISLAM IS WONDERFUL RELIGION, FULL OF HONOR & DIGNITY. AS MUSLIMS WE HAVE ALOT JOB TO DO. RSS IS IN BUSINESS OF DOMINATING OUR COUNTRY AND THEY ARE USING STATE RESOURCES TO KILL MUSLIMS AND ELECT THOSE WHO KILL MUSLIMS. WE NEED TO CARRY THE MESSAGE OF ISLAM NOT THE MESSAGE VIOLENCE. RSS WANT HINDUS TO LIVE IN A STATE OF FEAR WHERE THEY CAN MANIPULATE AND MANAGE THEM. GOVTS WE HAVE HERE NOW HAVE BECOME HYPOCRITE. IF GOVT. IS TRULY DEMOCRATIC IT SHOULD WORK FOR PEOPLE. ALLAH KNOWS BEST.
NOW THINGS ARE MANAGEABLE. NO MEANING IN SCRATCHING HEAD WHEN THINGS BECOME NOT MANAGEABLE. I NEED HINDUS TO SIT DOWN AND READ QURAN ONCE IN THEIR LIFE TIME. QRAN IS WAY OF LIFE AND IS SYSTEM OF LIFE WHICH ACTUALLY WORKS. STOP THE FEAR OF ISLAM. ISLAM IS NOT YOUR ENEMY. ISLAM DOESN'T SEND YOU BILLS TO YOUR DOOR STEP. ISLAM DOESN'T KILL YOU WHEN YOU DRIVE ON THE ROAD IN THE MORNING. WE MUST STOP THE BUSINESS OF BLAMING ISLAM & MUSLIMS. IF WE DO NOT DO SOMETHING QUICKLY THEN WE WILL BE IN STATE OF FEAR WHICH YOU WONT BELIEVE AND IT WILL BE SUCH A DARK PLACE TO LIVE. BECAUSE MONEY & POWER MAY BE MAJOR PROBLEM WHICH IS GOING TO COME TO THE MANKIND. RICH & POOR GAP IS WIDENING. MAY ALLAH GUIDE US ALL. AMEEN
Sumesh,
The life starts when you are Died.. and surely we will come to know who is our CREATOR and the life after DEATH.. Seriously U need to learn about our CREATOR who promises heaven and hell and will give JUSTICE for the injustice done in this TEMPORARY material WORLD which many people are running over this... THINK and PONDER on who is worthy of worship . and learn about life after death... If U are honest the one who gave life will guide U>
in UK as per constitution no suspect can be detained for more than 6 days if they dont have any evidence . i don't know from where sir Ambedkar studied the constitution and implemented . In india a suspect can be hanged. laaa hawla wala kuwwatha illa billah.
Mr. Chidambaram should have said this information before his killing so that we could have saved an innocent man going in to gallow...how can a government answer this to God...some god will ask question with PM like hanuman, krishna, ganapathi etc....these Gods know real truth if Chaddis are believing in them....or they could have at least consulted Cow Goddess...
Every LIES will be OUT & EXPOSED and People will know CLEARLY the CHEDDI deception In-Sha ALLAH... People should go with the TRUTH , and not support the LIARS & DECEIVERS without VERIFYING the TRUTH.
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