Two researchers from the University of Bielefeld (North Rhine-Westphalia, Germany) estimate that Leonardo da Vinci's La Gioconda & # 39; does not show the so-called "Mona Lisa effect", where it is estimated that the eyes of a person portrayed appear to be following the observer.
To reach this conclusion, researchers Gernot Horstmann and Sebastian Loth had 24 people looking at the 16th century portrait on a computer screen and considering the direction of their gaze. These specialists used 15 different sections, from head to eye and nose and showed each image three times in random order.
Having done more than 2000 evaluations, almost all the measurements showed that the person who is portrayed does not have a direct appearance, but is on the right side of the viewer with a average angle of 15.4 degrees, which means it doesn't have the & # 39; Mona Lisa effect & # 39;.
Horstmann, co-author of the study, said: "People are very good at judging whether others are observing them or not" and can get that feeling if they are in front of a painting that looks at them both in front and "with a little lateral appearance", even if "as the angle expands they no longer have that impression".
& # 39; La Gioconda & # 39; at the Renaissance Leonardo da Vinci is one of the most famous paintings in the world, attracting millions of spectators each year at the Louvre Museum (Paris, France) where it is exhibited.