Synesthesia is a recognized neurological phenomenon defined by the crossing or blending of senses, where stimulation in one sensory pathway triggers involuntary experiences in another.
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Wikipedia: Synesthesia
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en.wikipedia.org: Synesthesia
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Defines synesthesia as a condition where stimulating one pathway leads to experiences in another.
nature.com: The taste of words on the tip of the tongue | Nature
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Confirms synesthesia is a crossing of senses, though notes pictures alone don't usually elicit tastes.