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From an image in the print copy:
- Caltech and UCLA scientists sue pictures of celebrities to study how the brain processes what the eyes see. In 2005 they found an individual nerve cell that fired only when subjects were shown pictures of Jennifer Aniston. Another neuron responded only to pictures of Halle Berry--even when she was masked as Catwoman. Follow-up studies suggest that relatively few neurons are involved in representing any given person, place, or concept, making the brain staggeringly efficient at storing information.