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Mothers' and babies' brains 'more in tune' when mother is happy

The research, published in the journal NeuroImage, used a method called dual electroencephalograhy (EEG) to look at brain signals in both mums and babies while they were interacting with each other.

The research, published in the journal NeuroImage, used a method called dual electroencephalograhy (EEG) to look at brain signals in both mums and babies while they were interacting with each other. They found that mums and babies tend to synchronise their brain waves -- an effect known as interpersonal neural connectivity -- particularly in the frequency of 6-9 hertz, the infant alpha range.

By looking at the qualities and structure of the interpersonal neural connectivity using a mathematical method of network analysis, the researchers could see how information flowed within each separate brain, and also how the two brains operated together as a network.

Mothers and babies tend to spend a lot of time together in a positive emotional state, in which their brains are very connected. The study found that positive interaction, with lots of eye contact, enhances the ability of mother and infant brains to operate as a single system. This promotes efficient sharing and flow of ...

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