Eye wrinkles may be a dreaded part of aging and a target of Botox treatments. However, they actually serve a purpose, according to a recent study: communicating sincere emotions.
Researchers at Western University studied how our brains perceive wrinkles around the eyes. They believe that we are simply hardwired to trust the sincerity of expressions when we see, for example, crow’s feet around the eyes of someone smiling.
Lead study author Dr. Julio Martinez-Trujillo, a professor at the university’s School of Medicine & Dentistry, described the method used to test brain responses — visual rivalry — as a “window into the unconscious.”