Synesthesia

What Is Synesthesia?

Synesthesia is a neurologically based condition in which a person experiences "crossed" responses to stimuli. Synesthesia occurs when stimulation of one sensory or cognitive pathway (e.g., hearing) leads to automatic, involuntary experiences in a second sensory or cognitive pathway (e.g., vision). About 5 percent of the population has synesthesia, and over 60 types have been reported. The most common form of synesthesia is grapheme-color synesthesia, in which people perceive individual letters of the alphabet and numbers to be "shaded" or "tinged" with a color. Other synesthetes commonly commingle sounds with scents, or shapes with flavors.



Find a nearby professional for face-to-face help

Current Issue

Love & Lust

Who says marriage is where desire goes to die?

Neuroscience Blogs

  • Nir Eyal

    Automatic You

    A blog about behavioral engineering.
  • Black Belt Brain

    Musings on movement and the mind.
  • A. David Redish, Ph.D.

    Brain and the Poetic Mind

    Musings on the relationship between brain, mind, and decision-making
  • Jordan Gaines

    Brain Babble

    Unraveling neuroscience research and FAQs—without the jargon
  • Faith Brynie

    Brain Sense

    How your brain makes sense of your senses.
  • Susan Barry by Rosalie Winard

    Eyes on the Brain

    A neurobiologist explores the amazing capacity of the brain to rewire itself at any age
  • Jonathan D. Moreno, Ph.D

    Impromptu Man

    History, bioethics, neuroscience and culture
  • Arthur Shimamura, Ph.D.

    In the Brain of the Beholder

    A closer look at how we experience art and film