'Weird shading' tricks the brain into seeing 3D forms from simple lines Shading brings 3D forms to life, beautifully carving out the shape of objects around us. Despite the importance of shading for perception, scientists have long been puzzled about how the brain actually uses it. Researchers from Justus-Liebig-University Giessen and Yale University recently came out with a surprising answer.
https://medicalxpress.com/news..../2025-07-weird-brain