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September 16, 2004

Features or Creatures: Visual Expertise Taps Same Neural Networks

Research conducted at Brown University and published in the current online early edition of the Proceedings of the National Academy of Sciences supports a mounting body of evidence that such a “face module” does not exist. Instead, researchers are finding that the same networks of neurons used to process faces are also used by people who are expert in making all kinds of fine visual distinctions, from radiologists to dog show judges.

In a novel experiment, subjects were trained to become experts on computer-generated creatures called Greebles. Over a two-week period, in a series of one-hour sessions, subjects were shown images of Greebles, whose appendages make them unique. Conceived by Brown Professor Michael J. Tarr and former students Isabel Gauthier and Scott Yu, Greebles’ subtle variations in shape and configuration render them visually difficult to identify, making them a perfect control image for the human face.

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Posted by thinkingmachine at September 16, 2004 07:12 AM

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