Is Aphantasia Genetic? What Families Should Know Now

The honest answer is less tidy than people want: aphantasia can run in families, but we do not have a proven "aphantasia gene."

That matters. A lot.

Because once someone realizes they have a blank mind's eye, the next move is usually not academic. They ask their mother. Their brother. Their child. Then the room gets weird, because one person says, "Wait, you actually see pictures?" and someone else says, "Of course I do."

That's often the real discovery.

The Short Answer: Probably Partly

Aphantasia looks like it may be partly genetic, especially when it has been present since birth. But "genetic" does not mean simple. It does not mean inevitable. And it definitely does not mean there is a neat little switch labeled APHANTASIA = ON.

In the 2015 paper that gave aphantasia its modern name, Adam Zeman and colleagues described people with lifelong absence of voluntary visual imagery. That congenital pattern already raised the obvious question: if someone has had a blank mind's eye for as long as they can remember, did they inherit it?

Later work made that question harder to ignore. In the 2020 Phantasia study, Zeman's team analyzed questionnaire data from 2,000 people with aphantasia and 200 people with hyperphantasia. One of the key findings was that aphantasia appeared to run within families more often than expected by chance.

That's the clue.

When I talk with people about aphantasia, family clustering is one of the patterns that comes up again and again. Someone takes the apple test, then casually asks a parent to picture an apple, and suddenly three generations are comparing what "imagine" means. It's funny for about 12 seconds. Then it gets personal.

But family clustering is not the same thing as proof of direct inheritance. Families share genes, yes. They also share language, habits, education, assumptions, and the awkward habit of never discussing inner experience until one person stumbles across a quiz online.

So the clean answer is this: aphantasia may be inherited in some families, but the research has not nailed down how.

Why Aphantasia Shows Up at the Dinner Table

Aphantasia often gets discovered socially.

Not in a lab. Not in a clinic. At the dinner table, in a group chat, during a book club argument, or after someone says, "Picture a beach," and half the room starts describing something they apparently see.

I've watched this happen in teaching settings. One student says they see nothing. Another says they see a full-color beach with foam and footprints. Then the first student looks betrayed, because they thought "picture it" was a metaphor for their entire life.

That family conversation can reveal several patterns:

• One parent has aphantasia, and one child does too.
• Siblings land at opposite ends of the imagery spectrum.
• Several relatives have weak imagery, but only one calls it aphantasia.
• Someone has visual aphantasia but strong inner sound or verbal thought.
• A child reports vivid dreams but no waking visualization.
• A relative says they can "kind of" see things, which may be hypophantasia rather than full aphantasia.

That last one matters. Imagery is a spectrum, not a club with one door.

The 2025 identical twin case study makes this point nicely. Researchers studied a pair of identical twins: one had aphantasia, one did not. Same genetic blueprint, different imagery experience. That does not wipe out the genetics argument, but it does warn us against lazy certainty.

Genes may load the dice. They don't always throw them.

In my lab notes, I separate "runs in families" from "caused by a single gene" because those are very different claims. Height runs in families. Anxiety can run in families. Musicality can run in families. None of those work like a simple blood type chart.

Aphantasia likely belongs in that messier category.

Why There Is No Aphantasia Gene Yet

The strongest reality check comes from genetic research.

A 2022 genome-wide association study by Day, Frayling, Wood, and Zeman looked at 1,019 people from the Exeter 10000 cohort. Participants completed the Vividness of Visual Imagery Questionnaire, a standard tool for measuring how vivid mental images feel.

The researchers did not find any genetic variants that hit the usual genome-wide significance threshold.

Translation: no confirmed aphantasia gene.

They did find two nearby variants that came close to a looser threshold and sat inside an intron of SYT1, a gene involved in synaptic transmission. Interesting? Yes. Proven? No. The authors were careful: larger studies are needed to see whether that signal is real or just statistical noise.

I like that caution. It keeps the science clean.

This is the part where bad internet summaries usually go off the rails. They take "possible genetic component" and inflate it into "scientists found the gene for aphantasia." They haven't. Not yet.

And honestly, I would be surprised if aphantasia turned out to be one-gene simple. Visual imagery depends on networks linking visual areas, memory systems, attention, and frontal control regions. Milton and colleagues found differences in connectivity between prefrontal regions and visual networks when comparing aphantasia and hyperphantasia. That sounds more like a brain-network trait than a single broken part.

Here's the caveat: most aphantasia research still leans heavily on self-report. The VVIQ is useful, but it depends on people interpreting inner experience in words. That is tricky. Two people can give different scores because their minds differ, or because they use the word "see" differently.

This won't work as a family diagnosis if everyone rushes through the questions and tries to guess the "right" answer. Slow down. Ask for examples.

What to Do Now

If you suspect aphantasia runs in your family, don't start with panic. Start with comparison.

Use the same questions for everyone:

1. Can you picture an apple on purpose?
2. Is it clear, faint, flickery, or totally absent?
3. Can you picture a familiar face?
4. Can you imagine sound, smell, taste, touch, or movement?
5. Do you dream visually?
6. Did you always experience your mind this way?
7. Does it affect memory, reading, planning, or emotion?

Seven questions. No drama.

If someone wants a more structured starting point, use The Best Aphantasia Test and compare answers afterward. Don't coach each other while taking it. That ruins the data and makes everyone second-guess their own mind.

My strong opinion: family history is useful, but it should make you curious, not worried. Aphantasia is not a disease hiding in your family tree. It is a difference in how mental representation works. Some people think in pictures. Some think in words, structures, facts, emotions, spatial maps, or plain knowing.

If your family has a cluster of blank or low-visual minds, write it down. Compare the patterns. Then bring the story to the MyAphantasia Community, because the best conversations about aphantasia usually start when one person says, "I thought everyone was like this," and someone else finally says, "Same."