Hyperphantasia is an abundance of mental imagery, the opposite of aphantasia. Images can feel vivid and lifelike, sometimes seeming to overlay real vision (projectors) rather than staying purely mental (associators).

When it comes to visualizing things in the mind's eye, our experience varies widely. Francis Galton's groundbreaking Breakfast Study revealed this phenomenon over 140 years ago, fundamentally changing how we understand visual imagery and its assessment.
Aphantasia Network · September 2018