• Aphantasia is the inability to visualize, otherwise known as image-free imagination; the absence of mental imagery
• About 2 percent of the population can’t visualize.

More resources

• https://www.scientificamerican.com/article/when-the-minds-eye-is-blind1/
• https://aphantasia.com/vviq/
• Aphantasia Network
  • https://aphantasia.com/
• https://aphantasia.com/vviq/https://aphantasia.com/