http://news.bbc.co.uk/2/hi/science/nature/8070210.stm
http://www.nature.com/nrn/journal/v3/n1/fig_tab/nrn702_ft.html
http://en.wikipedia.org/wiki/Ideophone
http://en.wikipedia.org/wiki/Insight
http://en.wikipedia.org/wiki/Onomatopoeia
http://en.wikipedia.org/wiki/Perception