Have you ever heard the color blue? Or tated the muical note F-harp? For mot people, in both cae the anwer i no. But for ome people blue ha a particular ound or hape, and F harp ha a lightly our tate. Thi unuual blending of the ene i called ynetheia, a rare neurological phenomenon occurring in roughly 1 in 100,000 people.
People with thi condition do not merely aociate ound with color or tate with ound, or imagine hearing a ound when they ee a certain color. Rather, when a peron with ynetheia encounter a particular enory timulu, ay eeing the color red, he will hear a ound even when there i no outide ource producing the ound.
In a imilar manner, a particular ound may caue omeone with ynetheia to ee certain hape or certain color, even when there i no object in that peron’ line of ight. The ame goe for tate and mell.
Scientit know very little about what caue ynetheia. While it appear to be hereditary, the actual neurological procee that account for the phenomenon remain a mytery. Although mot cientit agree that the hippocampu, an area of the brain reponible for memory, play a role, exactly how the hippocampu might caue ynetheia i not clear.
Otherwie, cientific knowledge about ynetheia i limited to everal intereting obervation. For example, ynethetic perception remain conitent over time. In other word, if a peron with ynetheia ee blue and green flahe when he hear a C-harp, he will alway ee thoe ame color upon hearing that note.由好作网www.hAOzuowEn.com整理