Have you heard of Charles Bonnet syndrome? Neurologist Oliver Sacks explains that this condition causes blind people to have alarming but mild visual hallucinations, only 1% of which are reported due to the fear of stigma. Fortunately, functional brain imaging allows for a progressively better understanding of how the brain works. Sacks believes that the common occurrence of conditions like this should be shared with the world in order to reduce fear. To view this video, click here.