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    These Scientists Just Won The Nobel Prize For Discovering Your Brain's GPS

    This is how you know where you are.

    Three scientists who helped discover how the brain knows where it is have won this year's Nobel prize for medicine.

    American-British scientist John O'Keefe (left) won half the prize for his 1971 discovery of "place cells" in the brain, while Norwegian scientists May‐Britt and Edvard Moser (who are also a married couple) won for their 2005 discovery of "grid cells" in rats.

    Together, the place cells and grid cells form the brain's "internal GPS", helping it work out where it is – and where it's going.

    Specific place cells are triggered when you're in specific locations – they're how the brain remembers those places.

    Grid cells, meanwhile, form a coordinate system, turning on and off in unique patterns as you (well, rats) move around.

    So, next time you're trying to find your way around, thank your place cells and grid cells – and the people who discovered them.