Figure 6.

The impact of ethanol on ex-Gaussian components of the response time distribution on the 9-choice stimulus reaction time task. Ethanol administration caused no significant changes in the mean (mu) and standard deviation (sigma) of the Gaussian component of the response time distribution, but a significant increase in the tau parameter (P = 0.017), reflecting an increase in skewness of the response time distribution due to more late responses. Post hoc comparisons demonstrated that the tau value was significantly increased from saline at the 0.5 g/kg dose (P = 0.005). *P < 0.05 versus saline.