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| Dean Reinke Deans' Stroke Musing |
We probably need better cognitive control right after a stroke. Your doctor will need to convince the powers that be that video game expenses are absolutely necessary for stroke rehab. Do you really think your doctor can do that simple task?
Researchers found that seniors who play a 3-D video game improve their ability to sustain focus and multitask successfully. The results highlight the potential of the aging brain to improve certain skills.
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| A study participant playing a video game designed to enhance cognitive control. Image courtesy of UCSF. |
A team led by Drs. Joaquin A. Anguera and Adam Gazzaley from the University of California, San Francisco, examined the ability of seniors to multitask and improve their cognitive control—the ability to interact with a complex environment to accomplish a goal. The study, funded in part by NIH’s National Institute on Aging (NIA), appeared on September 5, 2013, in Nature.
The researchers first assessed multitasking ability in 174 participants ranging in age from 20 to 79 years. Using a custom-designed 3-D driving game, they found that multitasking performance dropped linearly with increasing age.
To test whether older adults could improve multitasking ability, the researchers randomly assigned 46 healthy adults, ages 60 to 85, to 1 of 3 groups: multitask training using the 3-D videogame, single-task training using a similar videogame, or no videogame training. During multitask training, participants used a joystick to maintain a moving car in the center of a winding road while also responding to road signs that popped up. As participants improved, the games got harder.
Seniors who played the multitasking game on a laptop at home for 1 hour a day, 3 times a week for 4 weeks (12 hours of total training) significantly improved their multitasking performance index at the end of the training period. The levels they achieved were superior to the levels achieved by a group of untrained 20-year-olds. When the seniors who completed the multitask training were tested 6 months later, the gains were still present.
The researchers found that the multitask training resulted in general improvements to cognitive abilities that are known to decline with age, particularly working memory and sustained attention. Using electroencephalography (EEG) to assess the neural basis of the cognitive changes, they found changes in the prefrontal cortex area of the brain, a region involved in cognitive control.
“The finding is a powerful example of how plastic the older brain is,” Gazzaley says, referring to the brain’s ability to adapt and change.Followup studies will be needed to better understand the neural basis for these performance changes.
Gazzaley has a patent pending for a game-based cognitive training intervention inspired by this research.
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