Rats that Run Have Better Memory

Male rodents given access to a running wheel early in life show increased neural activity and improved memory as adults.

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ISTOCK, ALUXUMMale rats with running wheels in their cages from a young age demonstrate improved performance on a memory task as adults, according to a study published today (August 14) in eNeuro.

Specifically, rats that had access to running wheels for six weeks starting at one month of age were better than their more-sedentary counterparts at remembering a box two weeks after they’d been taught to associate it with an electric shock. While the control rats froze—a classic fear response—the same proportion of times regardless of the box type or setting, the running rats froze much more often when placed in the original box.

“This is an animal study, but it indicates that physical activity at a young age is very important—not just for development, but for the whole lifelong trajectory of cognitive development during ageing,” Martin Wojtowicz of the University of Toronto in Canada tells New Scientist. (The caveat that this is an animal study is ...

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Meet the Author

  • Jef Akst

    Jef Akst was managing editor of The Scientist, where she started as an intern in 2009 after receiving a master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses.
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