Dr. Niko Troje, Queen's University (IMAGE) Queen's University Caption Dr Troje's team have unravelled the mystery as to how human beings can visually detect the presence of a living being, even if it isn’t immediately recognizable as animal or human. Credit Queen's University Usage Restrictions None 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.