Imagine you had a cross-wiring in your brain that caused information to leak from your sense of sounds into your sense of taste. This could mean that each time you hear C sharp you taste a sprout. A similar effect might happen across other senses. Words or numbers could have colours, shapes might have tastes or sounds might have associated smells.
There is a small chance you do not have to imagine this strange experience as synaesthetes number one in 2,000 people, with women outnumbering men six to one. On a psychology course when this phenomenon is described, it is often a revelatory experience for one or two people. Suddenly a person discovers they are not alone in their unusual experience of the world.
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Synaesthetes are usually normal in every way and in fact their unusual brain wiring can have some added benefits. Some find that their mathematical or musical abilities are enhanced – check out this story from Wired.
→ From Wired