Synesthesia (also spelled synæsthesia or synaesthesia, plural synesthesiae) is a neurological condition in which two or more bodily senses are coupled.

In a form of synesthesia known as grapheme to color synesthesia, letters or numbers may be perceived as inherently colored, while in ordinal linguistic personification, numbers, days of the week and months of the year evoke personalities.

Many people with synesthesia use their experiences to aid in their creative process, and many non-synesthetes have attempted to create works of art that may capture what it is like to experience synesthesia.

Psychologists and neuroscientists study synesthesia not only for its inherent interest, but also for the insights it may give into cognitive and perceptual processes that occur in everyone, synesthete and non-synesthete alike..

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