For synesthetes, by synesthetes

Connecting people
with crossed senses

The first social network built for synesthetes — connecting people who taste words, see music, and feel colors with each other and with the researchers studying them.

Create Your Profile For Researchers

100+

Documented types

of the population

∞

Unique experiences

Why Join

A home for the way you perceive the world

Most synesthetes go years without meeting another person who shares their experience. We're changing that.

Map Your Senses

Tag your profile with your exact synesthesia types — from grapheme-color to lexical-gustatory to mirror-touch. Be as specific as you experience it.

Find Your People

Search by type, location, and research interest. Discover someone across the world who also tastes the letter Q as peppermint.

Advance the Science

Opt in to be discoverable by verified researchers. Get matched to studies that need your exact combination of synesthesia types.

100+ Types and Counting

Every type of synesthesia, represented

From the most common to the rarest documented forms — tag your profile with the types you experience.

Auditory → MotorCalendar → SpatialChord → ColorChord → TasteColor → SmellColor → SoundColor → TactileColor → TasteColor PersonificationColoured SequencesConcept → ColorConcept → ShapeConcept → SmellConcept → SoundConcept → TasteDays → ColorEmotion → ColorEmotion → SmellEmotion → SoundEmotion → TactileEmotion → TasteGrapheme → ColorGrapheme → ParityGrapheme → SmellGrapheme → SoundGrapheme → TasteGrapheme → TemperatureGrapheme → TextureKey Signature → ColorKinesthetic SynesthesiaKinetics → SoundLexeme/Morpheme → ColorLexical → GustatoryLexical → OlfactoryLexical → TactileMachine EmpathyMathematical Concepts → VisionMirror SpeechMirror TouchMonths → ColorMusic → ColorMusic → SpatialMusic → TemperatureMusical Modes → ColorMusical Note → TextureMusical Notes → ColorNumber FormObject PersonificationOrdinal Linguistic PersonificationOrgasm → ColorPain → ColorPain → SmellPain → SoundPain → TastePerceived Emotion → ColorPerceived Emotion → SmellPerceived Emotion → SoundPerceived Emotion → TactilePerceived Emotion → TastePerson → Color (Aura)Personality → ColorPersonality → SmellPersonality → TastePersonification of Days/MonthsPersonification of Musical SequencesPhoneme → ColorSmell → ColorSmell → SoundSmell → TasteSmell → TemperatureSmell → TouchSong/Genre → ColorSong/Genre → TasteSound → Color (Chromesthesia)Sound → KineticsSound → SmellSound → TactileSound → TasteSound → TemperatureSound → TextureSpatial SequenceSwimming → ColorTaste → ColorTaste → ShapeTaste → SoundTaste → TemperatureTaste → TouchTemperature → ColorTemperature → SoundTicker TapeTimbre → Color/ShapeTone → TasteTouch → ColorTouch → EmotionTouch → SmellTouch → SoundTouch → TasteTouch → Temperature (Synesthetic)Vision → SmellVision → SoundVision → TasteVision → TemperatureVision → TouchVoice → ColorVoice → TasteWord → MovementAuditory → MotorCalendar → SpatialChord → ColorChord → TasteColor → SmellColor → SoundColor → TactileColor → TasteColor PersonificationColoured SequencesConcept → ColorConcept → ShapeConcept → SmellConcept → SoundConcept → TasteDays → ColorEmotion → ColorEmotion → SmellEmotion → SoundEmotion → TactileEmotion → TasteGrapheme → ColorGrapheme → ParityGrapheme → SmellGrapheme → SoundGrapheme → TasteGrapheme → TemperatureGrapheme → TextureKey Signature → ColorKinesthetic SynesthesiaKinetics → SoundLexeme/Morpheme → ColorLexical → GustatoryLexical → OlfactoryLexical → TactileMachine EmpathyMathematical Concepts → VisionMirror SpeechMirror TouchMonths → ColorMusic → ColorMusic → SpatialMusic → TemperatureMusical Modes → ColorMusical Note → TextureMusical Notes → ColorNumber FormObject PersonificationOrdinal Linguistic PersonificationOrgasm → ColorPain → ColorPain → SmellPain → SoundPain → TastePerceived Emotion → ColorPerceived Emotion → SmellPerceived Emotion → SoundPerceived Emotion → TactilePerceived Emotion → TastePerson → Color (Aura)Personality → ColorPersonality → SmellPersonality → TastePersonification of Days/MonthsPersonification of Musical SequencesPhoneme → ColorSmell → ColorSmell → SoundSmell → TasteSmell → TemperatureSmell → TouchSong/Genre → ColorSong/Genre → TasteSound → Color (Chromesthesia)Sound → KineticsSound → SmellSound → TactileSound → TasteSound → TemperatureSound → TextureSpatial SequenceSwimming → ColorTaste → ColorTaste → ShapeTaste → SoundTaste → TemperatureTaste → TouchTemperature → ColorTemperature → SoundTicker TapeTimbre → Color/ShapeTone → TasteTouch → ColorTouch → EmotionTouch → SmellTouch → SoundTouch → TasteTouch → Temperature (Synesthetic)Vision → SmellVision → SoundVision → TasteVision → TemperatureVision → TouchVoice → ColorVoice → TasteWord → Movement

For Research Institutions

The recruitment problem, solved

Synesthesia is one of the most valuable phenomena in neuroscience — it reveals how the brain wires perception, constructs conscious experience, and maintains connectivity that may protect against neurodegeneration. But this research requires extremely specific participants. A study on auditory-gustatory synesthesia can't use grapheme-color subjects. We make precision recruitment possible.

Dr. Patel, UCLSeeking: Chromesthesia
Projector subtype only

Ward Lab, SussexSeeking: Mirror-Touch
+ Sequence-Space combo

NIH Study #4821Seeking: Lexical-Gustatory
English speakers, 18–40

Precision participant matching for synesthesia studies

Every member self-reports their synesthesia types with the specificity your study protocol demands. Filter by type, subtype, co-occurring types, location, age, and willingness to participate — all with informed consent built in.

1Define your criteria — specify exact synesthesia types, subtypes (projector/associator), demographics, and location radius.
2We surface matches — our platform queries opted-in members who fit your study profile.
3They come to you — matched members receive study invitations. No cold outreach, no guesswork.

Synesthesia & Neurodegenerative Disease

Synesthetes show structural differences in brain connectivity that may protect against neurodegeneration. Research has found that the cross-activation patterns underlying synesthesia could inform early detection and intervention strategies for Alzheimer's and other dementias. Studying how synesthetic brains maintain rich neural connections offers clues to building cognitive resilience.

Rouw, R. & Scholte, H.S. (2007). “Increased structural connectivity in grapheme-color synesthesia.” Nature Neuroscience, 10(6), 792–797. doi:10.1038/nn1906
Hanggi, J. et al. (2011). “Globally altered structural brain network topology in grapheme-color synesthesia.” Journal of Neuroscience, 31(15), 5816–5828. doi:10.1523/JNEUROSCI.0964-10.2011

Synesthesia & the Science of Consciousness

Synesthesia provides a unique window into how the brain constructs conscious experience. Because synesthetes have verifiable, consistent perceptions that differ from non-synesthetes, researchers can study how subjective experience arises from neural activity — one of the hardest problems in science. This research informs theories of consciousness, perceptual binding, and how the brain integrates information across senses.

Seth, A.K. (2014). “A predictive processing theory of sensory and affective experience.” Brain and Cognition, 87, 1–13. doi:10.1016/j.bandc.2013.09.007
Ward, J. (2013). “Synesthesia.” Annual Review of Psychology, 64, 49–75. doi:10.1146/annurev-psych-113011-143840

Ready to find the participants your study needs?

Getting Started

Three steps to join

Create Your Profile

Tag Your Types

Browse our catalog of 100+ documented synesthesia types. Select every one you experience — most synesthetes have more than one.

Opt In to Research

Flip one toggle to become discoverable by verified research institutions. Help advance the science of perception.

Meet your people.
Make research possible.

Join thousands of synesthetes building the largest self-reported synesthesia dataset in the world.

Join The Synesthesia Network

Connecting people with crossed senses