VeryDelaney, Wallkill, NY
Synesthesia is a perceptual neurological phenomenon where outside visual or auditory stimulation causes involuntary experiences in another sensory or cognitive pathway."
In simpler terms, someone with synesthesia (a synesthete) might associate Sundays with the color orange, or see grey lines when they hear a helicopter. There are so many types of perceptions and associations for different people, including emotions, smells, physical sensations and textures and visual or mental projections.
For me, pretty much everything I interact with takes on a color and texture that flits around in the front of my mind. People, memories, places, music, and random things like chess and math equations, take on their own forms and shades in my brain and flow around like someone mixing multiple colors of paint, and then throwing it at a wall.