Celebs on the Brain

A study suggests individual brain cells recognize famous people. When scientists sampled brain cell activity in people who were scrutinizing dozens of pictures, they found some cells that reacted to a particular famous person, landmark, animal or object.

In one case, a single cell was activated by different photos of actress Halle Berry, including some in her "Catwoman" costume, a drawing of her and even the words, "Halle Berry." One expert says the work could help shed light on how the brain stores memories.

A researcher says the study suggests the brain uses relatively few cells to record something it sees. That's in contrast to the idea that it uses a huge network of brain cells instead. The research appears in tomorrow's edition of the journal "Nature."