Can viewing media violence change how the brain works?
Violent TV shows or video games may alter the brain in ways that make people more prone to real-life violence, according to a recent study. Christopher Kelly and colleagues used functional magnetic resonance imaging (fMRI) to observe the brain activity of 14 adult men and women as they watched short film clips showing violent, fearful, or neutral events. The researchers report that repeated brief exposure to the violent clips, but not to the other clips, led to a diminished response in the right lateral orbitofrontal cortex (ltOFC)a brain region that appears to play a key role in suppressing inappropriate aggression. Viewing violent clips also caused a reduction in the interaction between this brain region and the amygdala, a region of the brain that responds to threats. Additionally, brain regions associated with planning behaviors became more active after participants watched violent clips. This finding suggests that exposure to violence may diminish the brains ability to inhibit ina
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