Click on the image or the + sign to view larger image		Parts of the brain used in recognising familiar faces When you recognize a familiar face the parts of the brain highlighted in orange on this functional magnetic resonance image (fMRI) light up. In this case 'lighting up'means there is increased blood flow to the areas that are working hardest. Functional MRI allows these regions to be visualized. They can then be superimposed onto a 3D reconstruction of the brain to get a precise picture of the location of those regions. Credit: Mark Lythgoe and Chloe Hutton