Our recent Journal of Neuroscience article entitled Neural basis of adaptive response time adjustment is featured in Research News@Vanderbilt:
http://news.vanderbilt.edu/2011/08/new-insight-into-impulse-control/
Pouget, P., Logan, G.D., Palmeri, T.J., Boucher, L., & Schall, J.D. (in press). Neural basis of adaptive response time adjustment. Journal of Neuroscience.