Aphantasia is one of these things that can only truly be understood by people who experience it. For people who are able to imagine what things look like as easily as breathing, it’s hard to ...

But most of the time, I saw nothing. As I’ve now learned, there’s a name for the mind blindness I was experiencing: ...

But there are some people who simply cannot form such mental images. They have a condition known as aphantasia, or “mind blindness”—it’s rare, and only affects about 4 percent of the ...