The article gives a link to one paper from last year, but they give
the pay-walled nature.com link when it's available for free on nih.gov<p>"Functional Organization of Human Sensorimotor Cortex for Speech Articulation"<p><a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3606666/" rel="nofollow">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3606666/</a>