Arguments in the Home Linked With Babies' Brain Functioning

http://www.sciencedaily.com/releases/2013/03/130325135359.htm

sciencedaily.com | Mar 25th 2013

Being exposed to arguments between parents is associated with the way babies' brains process emotional tone of voice, according to a new study to be published in Psychological Science, a journal of the Association for Psychological Science.

The study, conducted by graduate student Alice Graham with her advisors Phil Fisher and Jennifer Pfeifer of the University of Oregon, found that infants respond to angry tone of voice, even when they're asleep.

Babies' brains are highly plastic, allowing them to develop in response to the environments and encounters they experience. But this plasticity comes with a certain degree of vulnerability -- research has shown that severe stress, such as maltreatment or institutionalization, can have a significant, negative impact on child development.

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"Even during sleep, infants showed distinct patterns of brain activity depending on the emotional tone of voice we presented," says Graham.

The researchers found that infants from high conflict homes showed greater reactivity to very angry tone of voice in brain areas linked to stress and emotion regulation, such as the anterior cingulate cortex, caudate, thalamus, and hypothalamus.

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