The study authors measured visual selective attention with a test involving squares that flashed on different parts of a computer screen.
First, participants were briefly shown a square in the center of the screen, which was followed by a square flashing elsewhere on the screen. The participants had to then tell the scientists where on the screen the second square was, relative to the first square.
Although the findings demonstrate a measurable increase in both brain activity and visual selective attention scores in participants after playing a video game for 1 hour, the authors explain that their findings do not tell us about how long these effects might last. They therefore suggest that more studies are needed in this regard.