Aphantasia

Aphantasia refers to the absence or near-absence of voluntary mental imagery. The term is often used for visual imagery—no "mind's eye"—but it can apply to any sense (e.g. auditory aphantasia, sometimes called anauralia). People with aphantasia typically do not form vivid internal pictures, sounds, or other sensory simulations when they try to; they may think about things conceptually or verbally instead. It is a variation in how the mind works, not a disorder. The Imagination Index measures imagery across all six senses so you can see where you fall on the spectrum from aphantasia to hyperphantasia.