For people with auditory-visual synesthesia, striking a piano key may ignite visions of turquoise geometric patterns or a twanging guitar string could create the sensation of billowing orange foam.

A person with naturally occurring synesthesia experiences the sensory world in overlapping layers. Sounds are seen as colors and tastes are processed as sounds. Overall, there are 60 documented forms ...

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Each person's perception is individually unique and subjective (Cytowic 2018.) Anesthesia is the phenomenon of no sensation. Synesthesia is the phenomenon of multiple sensations. Human senses include ...

Synesthesia is a perceptual experience in which one sensory input (like a letter or number) is automatically associated with another sensory experience (like a color or feeling). The prevalence of ...