People with aphantasia have brains that still create mental images even when they can’t consciously see them.
This discovery challenges everything we thought we knew about how consciousness works.
A study published in Current Biology reveals that when individuals with aphantasia try to imagine something, their primary visual cortex activates and generates distinct neural patterns.
Scientists could even decode what these individuals were attempting to visualize from their brain activity alone.
The twist?
The people experiencing this neural activity reported seeing absolutely nothing.
This matters because it fundamentally questions the longstanding scientific assumption that activity in the visual cortex directly produces conscious visual experiences.
The Hidden World of Aphantasia
Aphantasia affects roughly 2 to 5 percent of the population, according to recent research.
These individuals cannot voluntarily conjure mental images.
When you ask them to picture a red apple, a childhood home, or a loved one’s face, they draw a complete blank.
Not a fuzzy image.
Not a vague outline.
Nothing at all.
The condition was only named in 2015 by Professor Adam Zeman of the University of Exeter, who coined the term from Aristotle’s word for imagination, phantasia, adding the prefix a to denote its absence.
Since then, tens of thousands of people worldwide have recognized themselves in this description.
Many express shock upon discovering that others can actually see images in their minds, having assumed for years that phrases like “mind’s eye” were purely metaphorical.
Mary Wathen, a 43-year-old solicitor from England, discovered her aphantasia while trying to engage in role-playing games with her young children.
When a friend explained he uses mental images to enhance role play, Mary was stunned.
She told researchers at the University of Exeter that she simply cannot understand what others mean when they describe seeing images in their heads.
“To me, unless you can see something with your eyes, it’s not there,” she said.
Her frustration deepened when she learned her husband likely has hyperphantasia, experiencing mental imagery so vivid it rivals actual perception.
What Happens in the Brain During Imagination
For decades, neuroscientists believed the relationship between brain activity and conscious experience was straightforward.
If your visual cortex lights up during mental imagery, you should consciously experience that image.
This theory seemed logical and had dominated the field.
The new research published in January 2025 by scientists at UNSW Sydney and South China Normal University demolishes this neat framework.
Using advanced MRI brain scanning techniques, the international team measured brain activity in people with aphantasia as they attempted to visualize objects.
Professor Joel Pearson, a co-author based at UNSW’s School of Psychology, explains the counterintuitive finding simply.
“It’s like their brain is doing the math but skipping the final step of showing the result on a screen,” he said.
The researchers used algorithms to successfully decode what people with aphantasia were attempting to imagine solely from the neural patterns in their primary visual cortex.
This proved that image-specific representations were indeed being created in their brains.
But these neural patterns differ fundamentally from both actual perception and from the patterns seen in people who can visualize normally.
Critically, the imagery-related brain activity in aphantasic individuals appeared on the opposite side of the brain than expected and couldn’t be matched to patterns generated during actual visual perception.
Here’s What Most People Get Wrong About Consciousness
Most of us assume that if something is happening in our brain, we’re aware of it.
We think consciousness is simply the sum of our neural activity.
The aphantasia findings suggest reality is far more complex and strange.
The research reveals that your brain can generate detailed, content-specific neural representations that remain completely invisible to your conscious awareness.
Think about what this means.
Right now, your brain might be processing information, creating representations, running simulations that you have absolutely no access to.
The information exists neurologically but not experientially.
This challenges the popular notion that we have reliable introspective access to our own mental processes.
It also upends theories that treat consciousness as a simple readout of brain activity.
Instead, consciousness appears to require specific formatting of neural information, not just its presence.
Recent theoretical work proposes that conscious imagery emerges through a three-stage hierarchical process: generation, integration, and amplification.
First, top-down signals from higher brain regions initiate weak reactivations in sensory areas.
Second, the visual cortex binds conceptual knowledge with visual features to assemble coherent content.
Third, attention systems and prefrontal regions amplify this content, pushing it into conscious awareness.
According to this attention model of conscious imagery, people with aphantasia may succeed at the first stage but fail at integration or amplification.
Their brains generate initial sensory reactivations, but these representations either don’t get assembled into coherent perceptual-like content or don’t receive sufficient boost from attention systems to cross the threshold into awareness.
This explains why algorithms can decode their imagery attempts while the individuals themselves experience nothing.
The Wiring Makes All the Difference
The visual cortex in people with aphantasia appears to be wired differently, according to the research findings.
This altered connectivity pattern may explain why neural activity that would normally produce conscious images remains unconscious.
Professor Pearson notes that people with aphantasia seem to have images of a sort, but these remain too weak or distorted to become conscious.
The neural signatures during imagery attempts are fundamentally different from perception and from those of people with mental imagery.
Researchers found that unlike in people who can visualize normally, the representations in aphantasic brains couldn’t be cross-decoded between imagery and perceptual tasks.
When someone with typical imagery visualizes an apple and then looks at an apple, their brain shows overlapping patterns of activity.
This overlap doesn’t exist in aphantasia.
Additionally, people with aphantasia showed reduced brain responses even when physically viewing things compared to people without the condition.
This suggests the difference isn’t just about imagery but about how their visual cortex processes information more broadly.
The implications extend far beyond curiosity about individual differences.
Understanding why some neural activity becomes conscious while other activity remains hidden could transform how we treat conditions involving altered mental imagery.
Living Without Mental Pictures
Despite lacking visual imagery, people with aphantasia function remarkably well in daily life.
A decade of aphantasia research reveals that standard tests of memory and thinking show only borderline changes, if any, in people with the condition.
This defies Aristotle’s ancient assertion that “the soul never thinks without an image.”
Clearly, humans can think clearly and effectively without mental pictures.
However, one aspect of memory does appear affected.
The richness of autobiographical memory is generally reduced in aphantasia.
People with the condition report thinner, less detailed memories of personal past events.
They’re also less likely to conjure up vivid future scenarios or recognize faces easily.
Mary Wathen expressed sadness at learning other people can call to mind images of their children when they’re not physically present.
“I’d love to be able to do that, but I just can’t,” she said.
She compensates by taking plenty of photos to relive memories through external images.
But she also sees advantages.
“I’m a really good written and verbal communicator. I think that’s because I’m not caught up with any pictures, so I just focus on the power of the word,” she explained.
She believes her brain may overcompensate by making her deeply emotional.
“I feel things as a way of experiencing them, rather than seeing them.”
Intriguingly, aphantasia doesn’t prevent success in highly visual careers.
Ed Catmull, the co-founder of Pixar and former president of Disney Animation, has aphantasia.
He helped create some of the most visually stunning animated films in history without being able to “see” them in his head first.
Blake Ross, co-creator of the Mozilla Firefox internet browser, also discovered he had aphantasia and shared his revelation in a widely-read Facebook post.
These examples demonstrate that the relationship between mental imagery and creative or technical success is far from straightforward.
College Students Navigate Without Imagery
A 2025 study of college students with aphantasia reveals how they successfully navigate academic environments despite lacking what’s traditionally considered fundamental to learning.
Educational approaches typically assume students have intact mental imagery abilities.
Teachers routinely ask students to “picture this” or “imagine that scenario.”
Study guides recommend visualizing information to enhance memory.
Yet aphantasic students achieve comparable academic outcomes to their peers.
How?
The research suggests they develop unconscious compensatory strategies by college age.
These adaptations make it challenging to detect the role of visualization in learning through traditional methods.
Aphantasic students likely rely more heavily on verbal reasoning, logical analysis, and factual memory rather than visual-spatial processing.
This raises important questions about educational equity.
If a significant portion of teaching methods assume visualization capabilities, are we inadvertently disadvantaging students with aphantasia?
Should educators be trained to recognize and accommodate this variation in cognitive processing?
The researchers argue awareness is crucial.
Using visual imagination is a key way young children are taught to learn and engage with material.
If some children simply lack this ability, alternative approaches should be available.
Different Types of Aphantasia Emerge
As research expands, it’s becoming clear that aphantasia isn’t a single, uniform condition.
Recent review papers suggest there may be multiple subtypes, each with different underlying mechanisms.
Some people have a “where versus what” split in their imagery.
They can’t visualize what a blue car looks like (the “what”), but they’re perfectly capable of spatial imagery, knowing exactly where a car is parked or how to navigate a maze.
This suggests visual imagery and spatial imagery may rely on partially separable neural systems.
Others experience what researchers call deep aphantasia.
In these cases, not only is conscious imagery absent, but other visual phenomena that involve extrapolation or integration of information are also affected.
This indicates disruptions at an earlier stage of visual processing.
Researchers also distinguish between extreme aphantasia (a complete absence of imagery) and moderate aphantasia (minimal, barely perceptible imagery).
The Vividness of Visual Imagery Questionnaire (VVIQ) is the standard assessment tool, asking participants to visualize specific scenes and rate the vividness on a scale.
Scores range from 16 to 80, with aphantasia typically defined as scores below 24.
But the boundaries remain somewhat arbitrary and debated.
Some researchers propose five dimensions of variation that may characterize different aphantasia subtypes, though work continues to clarify these distinctions.
What’s emerging is a picture of aphantasia as a spectrum condition with multiple possible presentations rather than a binary on-off switch.
The Unconscious Imagery Debate
One of the hottest debates in aphantasia research centers on whether unconscious imagery exists.
If people with aphantasia generate neural activity that can be decoded by algorithms but remains invisible to them, does that count as “imagery”?
This isn’t just semantic quibbling.
The answer has profound implications for understanding consciousness itself.
Some researchers argue strongly against calling these neural patterns “unconscious imagery.”
They point out that true mental imagery should show perception-like patterns in the brain.
The representations found in aphantasic individuals fail this test because they can’t be cross-decoded with perceptual representations.
In other words, the neural patterns during attempted imagery don’t match the patterns during actual seeing.
This suggests the aphantasic brain isn’t creating genuine images that simply remain unconscious.
Instead, it’s generating something fundamentally different, transformed representations that lack the perceptual-like quality defining real imagery.
Other researchers take a more nuanced position.
They acknowledge the representations are transformed or non-conscious but argue they still count as a form of imagery-related processing.
The terminology matters because it shapes how we conceptualize the relationship between neural activity and subjective experience.
Can you have “imagery” without the experience of imagery?
Does the presence of content-specific neural activation constitute a type of representation even if it never reaches awareness?
These questions push us to refine our definitions and theories.
Why Mental Imagery Matters for Treatment
Understanding aphantasia has urgent clinical relevance.
Many psychological therapies rely heavily on mental imagery.
Cognitive behavioral therapy often asks patients to visualize anxiety-provoking scenarios.
Trauma treatments may involve revisiting disturbing events through mental imagery and reprocessing them.
Sports psychology uses visualization to improve athletic performance.
If someone has aphantasia, these standard therapeutic approaches may be ineffective or need significant modification.
Professor Pearson emphasizes this point.
“We want and need to know more about how mental imagery is central to many psychological therapies,” he said.
The research also has implications for understanding disorders associated with altered imagery.
Extremely vivid, intrusive imagery characterizes conditions like schizophrenia, post-traumatic stress disorder, and certain stages of Parkinson’s disease.
By understanding what’s different in aphantasic brains, researchers hope to develop strategies that could either restore imagery to those who lack it or reduce unwanted imagery in those who suffer from it.
Professor Pearson notes the research could potentially lead to treatments to give people with aphantasia mental imagery if they desire it.
Currently, no such interventions exist.
But if scientists can identify the specific neural mechanisms that differ in aphantasia, particularly around the integration and amplification stages of image formation, targeted interventions might become possible.
This could involve neurofeedback, brain stimulation, or pharmaceutical approaches that enhance the connectivity between attention networks and visual processing regions.
Broader Questions About Inner Experience
The aphantasia findings force us to confront uncomfortable truths about the diversity of human consciousness.
We tend to assume other people’s minds work roughly like our own.
We project our inner experiences onto others.
But aphantasia research reveals that inner worlds can be radically different even among neurotypical individuals.
Some people have imagery so vivid it rivals actual perception.
Others have no imagery at all.
Most fall somewhere in between.
This variability extends beyond vision.
Research shows that people with aphantasia are also less likely to experience imagery in other sensory modalities.
They report reduced ability to imagine sounds, smells, tastes, or tactile sensations.
This suggests aphantasia may reflect a broader difference in how the brain generates or accesses internally generated sensory experiences across all modalities.
The condition also raises philosophical questions about introspection.
If we can be completely unaware of neural activity happening in our own brains, how reliable is our introspective access to our mental states?
What else might be occurring beneath the threshold of our awareness?
These aren’t abstract concerns.
They affect how we design experiments, interpret self-reports, and think about the nature of mind.
The attention model of conscious imagery proposes that awareness requires not just neural activity but specific interactions between attention systems, memory networks, and sensory processing regions.
Consciousness emerges from the dynamic interplay of these systems, not from any single region or type of activity.
What Still Needs Answers
Despite rapid progress since 2015, major questions remain unanswered.
Researchers still don’t fully understand the genetic or developmental origins of aphantasia.
Is it present from birth, or can it develop?
Twin studies and family research could help clarify the heritability of the condition.
The relationship between aphantasia and other neurological or psychological conditions also needs investigation.
Some research hints at connections with autism spectrum disorders, though the nature of this relationship remains unclear.
Sample sizes in many studies remain relatively small, particularly for the aphantasia groups.
Larger, more diverse studies are needed to confirm findings and explore how aphantasia manifests across different populations, ages, and cultural contexts.
The specific neural mechanisms underlying different subtypes of aphantasia require mapping.
Which brain regions, connections, or neurotransmitter systems are involved?
Are there multiple routes to aphantasia through different types of neural dysfunction?
Perhaps most intriguingly, researchers want to understand what functions mental imagery actually serves.
If people with aphantasia manage so well without it, maybe imagery is less essential to cognition than traditionally assumed.
Or perhaps aphantasic individuals develop alternative strategies that accomplish the same cognitive goals through different means.
Understanding these compensatory mechanisms could inform educational approaches and cognitive training.
The Future of Consciousness Research
Aphantasia represents a natural experiment that lets scientists study consciousness in a uniquely powerful way.
By comparing brains that can and cannot generate conscious visual experiences while controlling for the neural activity involved, researchers can isolate the specific processes that give rise to awareness.
This approach offers advantages over studying consciousness in general because it focuses on a specific type of conscious content, visual imagery, that can be precisely manipulated and measured.
The latest theoretical frameworks propose testable predictions about which brain regions and connections should be affected in different aphantasia subtypes.
These predictions can guide future neuroimaging and intervention studies.
The work also connects to broader debates about the neural correlates of consciousness.
Does consciousness require activity in primary sensory cortices like the visual cortex, or do these regions merely contribute content while consciousness itself depends on higher-level processing?
The aphantasia data increasingly supports the latter view.
What matters isn’t just whether neurons fire in the visual cortex, but how that activity is formatted, integrated, and amplified by attention and prefrontal systems.
This has implications extending far beyond aphantasia to our understanding of perception, attention, working memory, and the general architecture of conscious experience.
Embracing Neurodiversity
As awareness of aphantasia grows, so does recognition that cognitive diversity should be valued rather than pathologized.
Aphantasia isn’t a deficit requiring fixing, though understanding it could enable treatments for those who desire them.
Instead, it’s a variation in how human minds can be organized.
People with aphantasia often report that discovering they have the condition brings relief and validation.
They finally have language to describe experiences that puzzled them for years.
They can connect with others who share their perspective.
Some even express pride in their unique way of processing information.
The diversity of inner experience enriches humanity.
Different cognitive styles bring different strengths.
Verbal thinkers, spatial thinkers, visual thinkers, and those who think in other modalities all contribute uniquely to culture, science, and society.
Recognizing and accommodating this diversity in educational and professional settings makes systems more equitable and effective.
The aphantasia story reminds us that consciousness comes in more varieties than we typically imagine.
Your neighbor, colleague, or family member may inhabit a fundamentally different mental world than you do.
Their thoughts may lack the visual component that seems so central to your own experience.
And yet they navigate life successfully, think creatively, solve problems, and experience the world in rich, meaningful ways.
Just differently.
Understanding aphantasia won’t just help scientists crack the consciousness problem.
It will help all of us appreciate the remarkable diversity of human minds and the surprising ways our brains construct our inner realities.
The people with no mind’s eye are teaching us that consciousness is stranger, more complex, and more varied than we ever suspected.
Their invisible images, coded in neural patterns but never reaching awareness, reveal a gap between brain activity and subjective experience that challenges our most basic assumptions about how minds work.
What else might we be missing about the nature of our own consciousness?
