Thursday, February 15, 2007


I was reading and they had an article on Diseases that can give you super human powers. One of them was called Synesthesia. I have included a bit from on the subject.

Synesthesia can occur between nearly any two senses or perceptual modes. Given the large number of forms of synesthesia, researchers have adopted a convention of indicating the type of synesthesia by using the following notation x → y, where x is the "inducer" or trigger experience, and y is the "concurrent" or additional experience. For example, perceiving letters and numbers (collectively called graphemes) as colored would be indicated as grapheme → color synesthesia. Similarly, when synesthetes see colors and movement as a result of hearing musical tones, it would be indicated as tone → (color, movement) synesthesia.

While nearly every possible combination of experiences is logically possible, several types are more common than others.

[edit] Grapheme → color synesthesia

Main article: Grapheme-color synesthesia

How someone with synesthesia might perceive (not "see") certain letters and numbers.
How someone with synesthesia might perceive (not "see") certain letters and numbers.

In one of the most common forms of synesthesia, grapheme → color synesthesia, individual letters of the alphabet and numbers (collectively referred to as graphemes), are "shaded" or "tinged" with a color. While no 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) ( Day 2005; Simner et al. 2005).

A grapheme → color synesthete reports, "I often associate letters and numbers with colors. Every digit and every letter has a color associated with it in my head. Sometimes, when letters are written boldly on a piece of paper, they will briefly appear to be that color if I'm not focusing on it. Some examples: 'S' is red, 'H' is orange, 'C' is yellow, 'J' is yellow-green, 'G' is green, 'E' is blue, 'X' is purple, 'I' is pale yellow, '2' is tan, '1' is white. If I write SHCJGEX it registers as a rainbow when I read over it, as does ABCPDEF."[2]

[edit] Music → color synesthesia

In music → color synesthesia, individuals experience colors in response to tones or other aspects of musical stimuli (e.g., timbre or key). Like grapheme → color synesthesia, there is rarely agreement amongst synesthetes that a given tone will be a certain color, but individuals are internally consistent. Tested months later, synesthetes will report the same experiences as they had previously reported.

Color changes in response to pitch may involve more than just the hue of the color. Lightness (the amount of black in a color; red with black may appear brown), saturation (the intensity of the color; candy red is highly saturated, while pink is almost unsaturated), and hue may all be affected to varying degrees (Campen & Froger 2003). Additionally, music → color synesthetes, unlike grapheme → color synesthetes, often report that the colors move, or stream into and out of their field of view.

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