One of the videos I watched was by Vilayanur Ramachandran and he talked about the brain and how it works and what happens (and why) when it doesn't.
Here:
Towards the end he talks about about Synthesis. This is basically when two senses mingle: you see a number as a color, or hear a musical note as a color, or something like that. This is really common among writers/poets/artists/musicians/etc. This is not because they use the mixed senses to be good at what they do, but because the mixed senses make them good at what they do. At the end he explains how we are all synthesiacs but in denial. He shows a picture of two shapes, one curvy and wavy and the other jagged and sharp-edged. He said they are two letters of the Martian alphabet and that one was "booboo" and the other "keekee." Most people in the audience associated the sharp, jagged figure to represent "keekee." Why? Our brain registers the "K" sound and associates it with a sharp and jagged image. The picture it forms in our brains corresponds with the way the word sounds.
How does this relate to writing? I think that, in poetry and music especially, if you are going to write something, the words have to match the meaning in definition and sound. Meaning a scary word has to mean scary and sound and look scary. It makes the meaning be more concrete, and, well, meaningful. Need help? This page will tell you some of the most beautiful words.
I realize, also, that writing in this manner can drive you insane trying to find the right words with the right meaning. It would drive me crazy. I would suggest using it for short writing, or to emphasize a certain point within a longer writing, and, most especially, for titles. No matter what you are writing about, the title can make or break your writing. The title is what hooks people into the story. I read somewhere that you can't a good book by it's cover, but a bad book has a bad cover (and that would include a title).
In Recap:
- use beautiful looking words for beautiful meaning words when writing "beautiful"
- don't use all the time, only for short stuff (i.e. songs, poems, special points within longer writings, TITLES)
- practice




