Face Decoding Machine Illustration (IMAGE) Cell Press Caption The image, inspired by the story of Alan Turing cracking the Enigma Code during World War 2, depicts a brain gazing at an infinite space of faces. The 50 dials on the "face decoding machine" illustrate the concept that face cells distinguish faces by projecting them onto axes spanning a 50-dimensional face space. Each axis is encoded by a single face cell, whose firing is shown on the monitor. Credit Courtesy of Doris Tsao Usage Restrictions Credit Required. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.