An optical illusion could help detect if a person has a serious mental health condition, according to a team of scientists.
The German scientists suggest that the 'hollow mask' video can help determine a schizophrenia diagnosis. Diagnosing the condition is not straight forward as there is no specific test, which can in turn leave sufferers waiting a long time for a formal diagnosis. Figures show that around 685,000 people across Britain currently have the mental health condition.
However, the scientists claim a video can help, with the peculiar clip showing a white face mask rotating in mid air.