What Is Can You Develop Synesthesia?

Understanding whether synesthesia can emerge later in life or be cultivated through experience and practice.

Synesthesia is a neurological condition where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second pathway. For example, a person might see colors when hearing music or associate specific tastes with certain words. Traditionally, synesthesia is considered a congenital trait, meaning people are born with it or develop it very early in childhood.

The question of whether synesthesia can develop later in life is a common one. While classic synesthesia is typically stable and lifelong, some evidence suggests that synesthetic-like experiences can arise in adulthood due to brain injury, sensory deprivation, or as a result of extensive training and practice. However, these acquired forms may differ in stability and automaticity from developmental synesthesia.

This topic explores the possibility of developing synesthesia after childhood, the mechanisms behind such changes, and practical insights into whether synesthesia can be purposely cultivated or trained.

Key Characteristics

Early Onset Most synesthetes report experiencing their cross-sensory perceptions from childhood, often without realizing it is unusual.
Consistency Over Time Synesthetic associations tend to remain consistent throughout a person's life, such as a letter always appearing as the same color.
Automatic Responses Synesthetic experiences happen involuntarily and without conscious effort each time the trigger occurs.
Variability in Acquired Cases When synesthesia-like experiences develop later, they may be less stable and less automatic than developmental synesthesia.

Common Triggers

🔤 Letters and numbers

🎵 Musical notes and sounds

🔢 Numerical sequences

💭 Concepts or words

👁️ Visual stimuli such as shapes or colors

Examples

"I started noticing colors linked to certain sounds after a head injury. It wasn’t there before, but now it’s quite vivid."

— Acquired synesthesia patient

"After practicing associating colors with letters as a memory aid, my brain began to automatically see them."

— Adult learner

"I’ve had these color-number sensations since I was a kid—it just feels like part of me."

— Developmental synesthete

"During sensory deprivation experiments, I began perceiving subtle colors with sounds, but it faded after the session."

— Research participant

The Science Behind It

Research suggests that developmental synesthesia arises from atypical neural connectivity present from early childhood, particularly increased cross-activation between sensory brain areas. This wiring is believed to be stable, leading to consistent, involuntary sensory pairings.

However, studies have shown that synesthesia-like experiences can also be induced or appear after brain trauma, sensory loss, or intense training. For instance, some individuals develop synesthetic perceptions following strokes or temporal lobe seizures, suggesting the brain’s plasticity can create new sensory links.

Furthermore, experimental research has demonstrated that with repeated practice, people can learn to associate stimuli in ways that resemble synesthesia, although these acquired associations generally lack the automatic quality found in developmental synesthesia.

Overall, while true synesthesia is primarily congenital, the brain’s adaptability allows for synesthetic-like experiences to develop under certain conditions, blurring the line between innate traits and acquired phenomena.

Frequently Asked Questions

Can synesthesia start in adulthood?

While most synesthetes experience it from childhood, some people develop synesthetic-like experiences later due to brain injury or sensory changes.

Is it possible to train yourself to have synesthesia?

Training can create strong associations between senses, but these usually lack the involuntary and consistent nature of true synesthesia.

Are acquired synesthetic experiences permanent?

Acquired synesthesia may be temporary or fluctuating, depending on the cause and individual brain changes.

What causes developmental synesthesia?

It is thought to result from increased connectivity between sensory areas of the brain present from birth or early childhood.

Can synesthesia be harmful or disruptive?

Most synesthetes find their experiences neutral or positive, though in rare cases, sensory overload can be challenging.

How do scientists study the development of synesthesia?

Researchers use brain imaging, behavioral tests, and case studies of acquired synesthesia to understand its origins and mechanisms.

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