For actual refence it's estimated that between 1% and 4% of people have either complete visual or auditorial aphantasia.

With a much larger percent of the world's population, having some sort of partial aphenasia. And a smaller percent having complete aphantasia of both types.

The disorder was only officially recognized in 2015. Has basically had no real research put into it outside of the last 10 years as well.

It's non-life impacting so rarely goes diagnosed if ever. And because it's so new, very few people know about it and go most if not their entire lives not realizing they have it.

I've seen some estimations putting it as high as 8 to 10% have complete of one type or the other. It's a lot more common than people realize. Especially because it's considered a gradient. The majority of cases are not complete lack but more commonly a middle ground. Such as the inability to picture, color rotation, shape, distinction. All audio typically is more along the lines of knowing or monologue or the inability to recall sounds in their head.

I'm one of the lucky few who has complete aphantasia of both types. I am unable to visualize anything. I have no inner monologue and I cannot recall sounds.

There's no static. There's no fuzz. There's no darkness there's nothing. It's just sort of empty. I recall most things through a conceptual connection to other things is the best way to describe it.

The only reason I even know that a inner vision is possible and what made me go down the rabbit hole to look into it. It's because I still dream. I understand that I have full visualization in my dreams but when I wake up it's empty. It's gone. I know I saw something but I cannot recall it. There's a complete lack of any visual memory.

It's very weird feeling. I tried to learn to lucid dream at one point as well and I came to the realization. The moment I realized I'm dreaming. Everything goes from visualize to pure darkness and then nothing. Exactly as if I'm awake. It's very trippy.