study has found that adolescents who play violent video games may exhibit emotional arousal and diminished control, focus and concentration.
“Our study suggests that playing a certain type of violent video game may have different short-term effects on brain function than playing a nonviolent — but exciting — game,” said Vincent P. Mathews, M.D., professor of radiology at Indiana University School of Medicine in Indianapolis.
Compared with the group that played the nonviolent game, the group that played the violent video game demonstrated less activation in the prefrontal portions of the brain, which are involved in inhibition, concentration and self-control, and more activation in the amygdala, which is involved in emotional arousal.
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