London: It`s known that our brains buzz with activity even though we are sleeping. Now a new study has found that this brain process develops by the time a foetus reaches full-term inside the mother`s womb.
They carried out the brain scans on 70 healthy infants who were born after 29 to 43 weeks of development and found that the resting state networks were completely developed in full-term babies. Babies born at 30 weeks development had incomplete but recognisable fragments of the networks, which suggests that resting state networks in infants develop within the last 10weeks of pregnancy. Once a foetus is 40 weeks old, its network looks much like an adult`s, the researchers found. Previous studies had found fragments of these networks, but the new research used sensitive methods to uncover the entire system, they said. The findings suggest that resting state networks are less involved with conscious action and thoughts than had been believed, Edwards said. "They`re more fundamental than has previously been thought, because they don`t need to be related to any cognitive aspect," Edwards said. "They`re very fundamental bits of brainactivity and therefore very powerful to help us understand what the brain is really doing." The researchers are now studying infants with disrupted resting state networks to find out if the disruption affects the babies` development. The new study is published in the journal Proceedings of the National Academy of Sciences. PTI
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