Recognition of Voice

It's tough to pick a familiar face out of a crowd - but focusing on a known voice in a noisy room is easy. And a new study scanned volunteers' brains to look at how we [solve:evolve] the so-called cocktail party problem. The work is in the journal Nature. Researchers [recorded:counted] the activity of the subject's cerebral cortexes while playing them [sentences:audios] spoken by [different:all] voices. First, the subjects listened to [individual:different] sentences and reported key [features:points] of each one. Then, they heard two different sentences played at the same time, but had to listen to and recall details from only one voice.