Brain’s grid cells could navigate a curvy world | Science News

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Brain’s grid cells could navigate a curvy world

representation of firing in curved space

Grid cells in the brain could map a sphere by firing in an unusual pattern (represented above in red), a mathematical analysis suggests.

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If we ever need to flee a dying Earth on curved space islands — as humanity was forced to do in Interstellar — our brains will adapt with ease, a new mathematical analysis suggests.

Our home planet is a giant sphere, of course. But to its surface-dwelling inhabitants, the world appears flat. Specialized cells in the brain called grid cells help construct an internal map of this flat space, a discovery that was awarded a 2014 Nobel Prize.

Grid cells could readily map curved space too, researchers report May 6 in Interface. Alessandro Treves of SISSA in Italy and colleagues found that grid cells may handle curves by firing in a slightly different pattern compared with how they fire in flat space. Studies of rats raised in spheres may help scientists better understand how the animals' grid cells map curved spaces. 

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