Here is a link to an article from SENG, citing a belief that there is a correlation: http://sengifted.org/archives/articles/overexcitability-and-the-gifted

It is reassuring to know that other people have children who experience things so intensely as well. Our son's reaction to some things --- like the potential loss of an ugly blue toilet -- have come as a surprise to us. However, they are very real emotions to him and we try our best not to dismiss or discount them, which isn't always easy when my first instinct is to laugh at the absurdity of it all! I love the last paragraph of this article, though: "Remember the Joy" and try to keep that in mind when dealing with toilet and other issues!