Those who suffer from prosopometamorphopsia see the faces of other people distorted. With the help of a special patient, neurologists have now understood how those affected perceive their counterparts.

A 58-year-old patient at the US Dartmouth College clinic described his perception of others as “demonic” With his help, a team there visualized the demon faces for the first time for those not affected. The results were published in the specialist journal ‘Clinical Pictures’