Video Games and Brain Structure

We’ve read a lot about how play and games affect development of the brain and learning.  This article offered a slightly different perspective on how inherent brain biology and structure can effect how games are played. When it comes to gaming ‘experts’ it seems there may be a fundamental biological difference setting them apart from ‘casual’ or ‘novice’ gamers.  Since the brain is not a static object, and is constantly changing and growing as we learn and respond to the world around us, I wonder if these biological differences stem from the amount of hours played, or if the amount of hours played stems from the biology. It seems like an interesting “chicken or the egg” scenario.