A man with brain damage that makes him clinically blind can navigate an obstacle course, seemingly by using a primitive part of his brain to perceive the objects in his path. This remarkable ability, discovered through a chance observation, is shedding light on a curious phenomenon known as blindsight. The man, known as patient TN, was studied by a team led by Beatrice de Gelder at Tilburg University in The Netherlands and Alan Pegna of the Geneva University Hospitals in Switzerland. (source: nature.com)
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