Aphantasia
Concept
The inability to voluntarily visualize mental images, first described in 1880. Kevin Rose discusses his own experience with this.
Mentioned in 2 videos
Videos Mentioning Aphantasia

Science-Based Mental Training & Visualization for Improved Learning
Andrew Huberman
The inability to mentally visualize, which affects a small percentage of the population.

The Future of AI, Bioelectric Medicine, Surviving Modern Dating, and More — The Random Show
Tim Ferriss
The inability to voluntarily visualize mental images, first described in 1880. Kevin Rose discusses his own experience with this.