Faces can appear male or female depending on where they are in our field of view, a study has shown. Scientists discovered that identical facial features might be judged male when they are viewed in one part of our field of view, but thought of as female in another location. The surprising discovery is believed to be the result of 'sampling bias' in the brain, the same glitch that can skew statistical surveys. And the findings challenge a longstanding belief of neuroscientists — that how the brain sees an object should not depend on where the object is located relative to the observer. Neuroscientists discovered that the brain sees some faces as male when they appear in one area of a person's field of view, but female when they appear in a different location.