Scientists have created a 3D-reconstruction of a face using from a person's memory

It's great to spot a familiar face -- and now researchers have'cracked the code' that our brains use to tell one apart from another. Our memories of the faces of people we know focus on key facial features let us recognise them when we meet. Volunteers were asked to rank how closely randomly-created digital faces matched with their memory of the face of a colleague. This process was repeated over and over, revealing key identifying facial features of the colleague being remembered. Computer software analysed the data on these instances of key features to recreate the faces in question.