Mind Games II: 3D Games & Depression
Thanks to Tiny Dancer over at gaygamer.net I got to read a very interesting article on how 3D game environments are being used as a measure for depression. The article is featured on the Science Daily website, and reports on research results published in the March issue of the American Journal of Psychiatry (read the abstract HERE). Here's the gist of the article:
"Scientists are using a virtual-reality, three-dimensional video game that challenges spatial memory as a new tool for assessing the link between depression and the hippocampus, the brain's memory hub. . . Researchers found that depressed people performed poorly on the video game compared with nondepressed people, suggesting that their hippocampi were not working properly."
Previous studies have linked decreased memory function with depression, associated with a smaller sized hippocampus among depressed individuals. In order to test their theory, the researchers designed a spatial memory test for a selection of depressed and non-depressed patients, since spatial memory functions in the brain have been shown to reside in the hippocampus. What's interesting here is that they originally did this research using "a two-dimensional memory test traditionally used in such studies" but were unable to see any difference in performance between the two groups being tested. They decided to rework the study using a three-dimensional virtual-reality game environment, and were able to more accurately measure differences in spatial memory between depressed and non-depressed patients.
Here is the conclusion they reached:
"Thus, the video game is a more revealing measure of spatial memory and a more sensitive measure of hippocampal dysfunction — a more powerful tool for exploring the link between the hippocampus and depression. It may one day be a tool for detecting hippocampus deficits in depressed patients."
From the point of view of the scientists who published these results, I can imagine they are pleased to have worked out a better way to test for depression related spatial memory issues using 3D video games. From the point of view of a gamer, though, I am curious about the specific role that this type of 3D virtual world interaction could have for us. Does this mean that there is the possibility that the converse is true - that interacting within 3D virtual game worlds could offer a way to improve the function of the hippocampus and perhaps strengthen spatial memory function among the depressed and non-depressed alike?
Everyone who has ever played a video game knows that the longer you play a game the better you get at it. This isn't only the case when replaying the same area in a game due to familiarity with the specific landscape, but is also true with unexplored levels as you progress through a game. If that weren't the case there would be no need for level designers to increase the difficulty of gameplay as the game progresses. From a completely unscientifically based assumption, I would have to guess that the reason players get better as they go has much to do with the learning that is taking place as they play, and that learning, as far as the brain is concerned, translates into increased connection between neurons creating more and better connections within the brain.
I don't want to speculate how this assumption would expand to include the reduced size of the hippocampus as it correlates with depression, but I can imagine that time spent interacting inside 3D game worlds could provide opportunities to strengthen what spatial memory resources a player has - even if that capacity is limited by depression's affect on the hippocampus. This makes me want to think, in my overly simplified hypothesis, that even depressed gamers have a chance at improved spatial memory functions compared to their non-gaming peers due to the time they spend interacting inside 3D virtual worlds.
I love that psychologists are interested in using game technology as a tool in their studies, but I think they could reveal some very interesting things when they do so if they also incorporated experienced gamers as part of the test group. People have been speculating on the possible negative effect that games have on their players since the arcade days, especially when it applies to young children. Wouldn't it be great to see studies like this one being done that begin with the hypothesis that time spent in 3D game worlds might result in positive effects on the players? We might be surprised by the results.








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