Older adults regained that ability after they trained on a driving computer game during which they had to periodically respond to a sign, researchers reported in the journal Nature on Wednesday.
“All these things are capitalizing on the fact that our brain’s plasticity to reshape itself structurally, functionally, and chemically doesn’t end when we go through a critical stage of development, but it exists through our lives,” said Dr. Adam Gazzaley, director of the Neuroscience Imaging Center at the University of California, San Francisco, who led the work.
The game, NeuroRacer, is a simple driving task requiring participants to navigate a winding mountain road that gets progressively more challenging. When a particular sign pops up on the screen, players respond by pressing a button as rapidly as they can.
The researchers measured the decline in performance that occurred when the players, aged 60 to 85, had to drive and respond to signs. Having to do both simultaneously resulted in a 64 percent cost, on average, to their performance. But after people played the game for 12 hours over a monthlong period, they improved, experiencing less of a drop in performance than 20-year-olds who played the game once.
Gazzaley is a cofounder of a Boston-based company, Akili Interactive Labs, that is already working to adapt the basic principles of the research to a more sophisticated mobile game, called Project Evo.