I’m a big fan of video games, puzzles, and brain teasers. So the notion that so-called “brain training” games can help improve mental function and stave off dementia has some appeal to me. It also makes a certain amount of sense – exercise your brain and its function will improve.
And yet, as a skeptic, I have always been bothered by the specific claims made by marketers of games, websites, devices and programs. The formula is probably familiar to you, a specifically designed program is optimized to stimulate brain function, improve integration of information, and improve global function.
The website promotion for Brain Age, for example, claims:
Everyone knows you can prevent muscle loss with exercise, and use such activities to improve your body over time. And the same could be said for your brain. The design of Brain Age is based on the premise that cognitive exercise can improve blood flow to the brain. All it takes is as little as a few minutes of play time a day. For everyone who spends all their play time at the gym working out the major muscle groups, don’t forget – your brain is like a muscle, too. And it craves exercise.
The blood flow argument is pure hand-waving. The muscle analogy is perhaps more apt than intended – do muscles respond to a specific exercise or to any exercise?