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And another paper showing playing 3d video games causes brain matter to increase (or at least not deteriorate) in older people: http://journals.plos.org/plosone/article?id=10.1371/journal....


I'd be interested in a study where an additional group replaced games/music with walking outside in the natural environment for 1 hr a day. Or since we know "exercise" increases brain mass, what specifically about exercise causes the response. Are the effects additive? Can we exercise, play music and video games for more than 1x the matter growth?




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