See Inside The Science of Perception

The Eyes Have It [Preview]

Eye gaze is critically important to social primates such as humans. Maybe that is why illusions involving eyes are so compelling

The ghostly gaze illusion is based on a hybrid-image technique created by Aude Oliva and Philippe G. Schyns of the Massachusetts Institute of Technology. In a shocking example of how perceptual interpretation of hybrid images varies with viewing distance, Albert Einstein, seen from up close, becomes Marilyn Monroe (left) or Harry Potter (right), when seen from a few meters away. For more hybrid images created by the Oliva laboratory, visit the hybrid image gallery at

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