Effects of UII on cortical blood flow. A, The effects of a bilateral injection of 0.6 pmol of UII into the PPT nucleus. B, The effects of an intracerebroventricular injection of 0.6 nmol of UII. Each point represents mean values (±SEM; n = 5 rats per group) recorded every 5 min. Values are expressed as the percentage of the values for the same rat before UII treatment (100%). The arrow indicates the time of injection of UII. Significant effects of UII were identified using one-way ANOVA and a Sheffé's F test and are indicated by asterisks (for values, see Results). Error bars represent SEM.