R: The ex-Gaussian distribution

The ex-Gaussian distribution
http://rss.acs.unt.edu/Rdoc/library/gamlss.dist/html/exGAUS.html

The R GAMLSS packages
http://www.gamlss.com/

Response-time data & ex‐Gaussian

Tutorials in Quantitative Methods for Psychology
2008, Vol. 4 (1), p. 35‐45.
How to use MATLAB to fit the ex‐Gaussian and other probability functions to a distribution of response times
Yves Lacouture
Denis Cousineau
http://tqmp.org/doc/vol4-1/p35-45_Lacouture.pdf