As with other environmental influences, video games change the brain. These studies describe the role of video games in the important field of neuroplasticity, as well as parts of the brain linked to skill at video games.
Extensive video-game experience alters cortical networks for complex visuomotor transformations. (Link)
Playing a first-person shooter video game induces neuroplastic change. (Link)
Striatal volume predicts level of video game skill acquisition. (Link)