Scientists have discovered a special brain cell that acts as a built-in GPS system. Called a “grid cell,” it allows the brain to remember the routes it took while on the move. Researchers say without the grid cell, humans would have to rely only on physical landmarks, causing them to get lost more easily
Scientists from Drexel University, the University of Pennsylvania, UCLA and Thomas Jefferson University studied 14 volunteers with epilepsy who played a navigation–heavy video game using a joystick.
Volunteers were given a series of tasks that required navigation skills. They followed a map to reach certain objects — then those objects were kept in the same places but made invisible. The idea was for the volunteers to navigate the path while finding the objects in their original location. Read more...
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