Figure 4. Pretreatment with raclopride blocked the increase in the amplitudes of the delta and beta bands induced by modafinil at 90/kg, but those in the alpha and theta frequency bands were not.

We took the value of the amplitude in the delta, theta, alpha, and beta bands induced by Res and Scop to be 100%. The arrows indicate the times of drug injection. Values are means±SEM (n = 5–9). *P<0.05, **P<0.01, compared with vehicle control as assessed by one-way ANOVA, followed by the PLSD test.