This is something I've been curious about since I found out that not everyone experiences it, or experiences it the same way.
Quote:
Grapheme → color synesthesia is a form of synesthesia in which an individual's perception of numbers and letters is associated with the experience of colors. Like all forms of synesthesia, grapheme → color synesthesia is involuntary, consistent, and memorable. Grapheme → color synesthesia is one of the most common forms of synesthesia, and because of the extensive knowledge of the visual system, one of the most studied.
While it is extremely unlikely that any two synesthetes will report the same colors for all letters and numbers, studies of large numbers of synesthetes find that there are some commonalities across letters (e.g., "A" is likely to be red).[1][2] Early studies argued that grapheme → color synesthesia was not due to associative learning, such as from playing with colored refrigerator magnets.[3] However, one recent study has documented a case of synesthesia in which synesthetic associations could be traced back to colored refrigerator magnets.[4] Despite the existence of this individual case, the majority of synesthetic associations do not seem to be driven by learning of this sort.[2][5] Rather, it seems that more frequent letters are paired with more frequent colors, and some meaning-based rules, such as ‘b’ being blue, drive most synesthetic associations.
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I associate colours with numbers, letters, places, songs, certain words, etc. I'm interested to know what percentage the population of MB experiences this, and how they experience it.
Drugs don't count.