A
strange condition where the
senses are
entangled or
overlapping in the
mind, causing a
situation where things that
stimulate one sense can cause the
others to
trigger in ways also. This can also
affect other parts that
depend on
sensory data, such as the part of the
brain that handles
language.
People with this condition (a synesthete) commonly see letters as being of various colors, see shapes when they hear sounds, or hear sounds when they are touched. The correlations between the senses vary from one individual to another - while one may see a letter "e" as a deep red, another may see it as white.
Personally, I am jealous of those people with this condition. While I am aware that it can be an inconvience at times, the additional life and depth the world would have seems to be a very attractive idea.