Many people have no mental imagery. What’s going on in their brains? - A Nature news feature on aphantasia

https://lemmy.world/post/42648823

Many people have no mental imagery. What’s going on in their brains? - A Nature news feature on aphantasia - Lemmy.World

> Think about your breakfast this morning. Can you imagine the pattern on your coffee mug? The sheen of the jam on your half-eaten toast? > Most of us can call up such pictures in our minds. We can visualize the past and summon images of the future. But for an estimated 4% of people, this mental imagery is weak or absent. When researchers ask them to imagine something familiar, they might have a concept of what it is, and words and associations might come to mind, but they describe their mind’s eye as dark or even blank. > … the topic received a surge of attention when, a decade ago, an influential paper coined the term aphantasia to describe the experience of people with no mental imagery. > Much of the early work sought to describe the trait and assess how it affected behaviour. But over the past five years, studies have begun to explore what’s different about the brains of people with this form of inner life. The findings have led to a flurry of discussions about how mental imagery forms, what it is good for and what it might reveal about the puzzle of consciousness: researchers tend to define mental imagery as a conscious experience, and some are now excited to study aphantasia as a way to probe imagery’s potentially unconscious forms. The article itself went into a lot of past and current research into aphantasia and is quite detailed, worth a read if you are interested (especially if you are also quite high on the aphantasia scale like OP) Try this archive.org link [https://web.archive.org/web/20260204091637/https://www.nature.com/articles/d41586-026-00311-7] if it is paywalled

The issue with all these studies about people’s subjective experiences is that they rely on self reporting. Just because someone says that they have no mental imagery doesn’t mean that they actually don’t. They may simply be unaware of it. After all, how many people actually spend any significant amount of time learning to pay attention to their minds. The vast majority don’t.

It’s a bit like asking people whether they have an optic blind spot in their vision but not teach them how to look for it. Virtually everyone would say that they don’t and they’d all be wrong.

Blind spot (vision) - Wikipedia

They don’t all do this, though - research seems to use imaging and other observational techniques, self reporting isn’t the only source. Brain imaging is one, and I know they’ve demonstrated variance in automatic pupil responses to back up self report. I think they have also used it as a research control in other studies after that, but I don’t know a ton about it.

This is what I remember reading, I think, and that…advocacy? awareness?..site also has a decent running collection of assorted research. Seems like it’s not very well understood or studied, which makes sense when it doesn’t really affect behavior or quality of life.

The pupillary light response as a physiological index of aphantasia, sensory and phenomenological imagery strength

Aphantasic individuals lack the involuntary pupillary light response that typically occurs when imagining bright or dark stimuli. This provides the first objective physiological index to validate aphantasia and measure mental imagery strength.

Aphantasia Network