Mangaluru: Modi welcome banner puts citizens in danger

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.

Bengaluru, Feb 25: Infosys is all set to announce a cyber defence centre in Indianapolis to complement its technology and innovation centre inaugurated early last year.

This will be Infosys' seventh global cyber defence centre. According to its recent cybersecurity report titled 'Assuring Digital Trust,' 83 per cent of executives view cybersecurity as critical, yet 67 per cent are still struggling to have security embedded.

The cyber defence centre will provide end-to-end, real-time, 24x7 cyber security monitoring and protection services to support and guide American businesses in their digital transformation journey, it said.

The facility is dedicated and organised to prevent, detect, assess and respond to cybersecurity threats and breaches.

Client environment will be monitored round the clock, adopting a follow-the-sun model to deliver services like 24x7 security monitoring, management and remediation, threat hunting, security analytics, incident discovery and response, compliance reporting and malware analysis.

Vishal Salvi, Chief Information Security Officer and Head of Cyber Security Practice at Infosys, said the cyber defence centre is staffed with expert security analysts with niche skills around threat research and intelligence gathering to deliver best-in-class services to customers.

"Additionally, advanced data analytics and machine learning models are deployed to detect zero-day threats by unknown threat actors. This supports our commitment to helping our customers build a resilient cybersecurity programme that operates at scale while increasing operational efficiency and reducing costs," he said in a statement.

Bengaluru, Jun 9: The total number of positive COVID-19 cases in Karnataka rose to 5,921 on Tuesday after the state reported two deaths and 161 new cases of the virus.

"Two deaths and 161 new COVID-19 positive cases reported from yesterday 5 pm till today at 5 pm, taking the total number of positive cases to 5,921," said Karnataka Health Department.

The toll in the state is presently at 66.

While 164 patients have been discharged today, the number of discharged patients so far is 2,605. The active cases in the state stands at 3,248.

Among the new cases, Yadgir contributed highest (61), followed by Bengaluru Urban (29) and Dakshina Kannada (23). Udupi did not report any new case. More details to follow.