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