Aphantasia:
As many as 3.9 per cent of people have aphantasia, the inability to picture images in one’s head. But formally diagnosing the condition is difficult. A simple physiological test involving a webcam could one day offer a solution. [“Simple webcam test could show whether you lack a mind’s eye,” Jason Arunn Murugesu, NewScientist (14 May 2022, paywall)]
