Figure 2.

Effects of α-chloralose anesthesia and L-NAME (30 mg/kg) on baseline blood flow and increases in blood flow due to vibrissal stimulation in four stations of the whisker-to-barrel cortex pathway. Bar heights and error bars represent mean rates of blood flow + SEM obtained in the number of rats indicated. *, P < 0.05; **, P < 0.01; ***, P < 0.001 for side-to-side differences between stimulated and unstimulated sides (paired t test with Bonferroni correction). Bracketed P values are for comparison of the values of blood flow in the structures and sides indicated by the brackets (unpaired t test with Bonferroni correction). †, P < 0.05; ††, P < 0.01, statistical significance of difference in percent increase in blood flow attributable to stimulation in indicated condition from percent increases due to stimulation found in conscious saline-treated controls, determined by Kruskal–Wallis test (one-way ANOVA by ranks) with Dunn's test.