Aphantasia is not actually a real condition btw, the whole “imagine an apple” discourse is completely lacking in rigor. It’s like the online ADHD discourse, or MENSA. It’s a way for boring people to talk about themselves to each other. (Like most of Reddit and Wikipedia.)

This happens to me periodically and I seriously think it means we just need more potassium, less sleep disruption, and more time in nature to absorb green colors (soothing in memory, gives you good dreams) and exercise the eye muscles with long distance focus.