By studying the eyes, a researcher explores how the brain sorts information

A cyclist is pedaling down the street. Signs, trees and fire hydrants whip by. As they bike along, their brain takes in information from what they’ve perceived but can no longer see. Their brain sorts through that information — the color, shape and text on signs, for example — and selects what is most important. Based on that, the biker takes the correct turn and continues on.

Freek van Ede uses a lot of bicycling metaphors. This makes sense for a researcher in the Netherlands. A cognitive neuroscientist at Vrije Universiteit Amsterdam, van Ede studies attention. His focus is not on external attention — what someone is looking at

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