Figure 6. Mean data for the effects of pharmacological agents and the sectioning the CST on the increases in the MBF and LBF evoked by LN stimulation.

Each value (mean ± s.e.m.) for the effects of C₆ at 1 and 10 mg kg⁻¹ (for MBF, n = 5; for LBF, n = 4), Atr at 100 μg kg⁻¹ (for MBF, n = 9; for LBF, n = 11), Phe at 100 μg kg⁻¹ (n = 5 in each group), Pro at 100 μg kg⁻¹ (n = 5 in each group), and sectioning the CST (CSTs) (n = 5 in each group) on the increases in the MBF (white bars) and LBF (black bars) on the left side (ipsilateral) evoked by the left LN stimulation are expressed as percentages of the pretreatment response. The stimulation was delivered for 20 s with a supramaximal voltage (20 V) at 20 Hz using 2 ms pulses, and was carried out before (control) and 10 min after intravenous administration of each drug, or 10 min after sectioning the CST. The statistical significance of the differences in this pretreatment response (control) was assessed by ANOVA followed by a post hoc test (Fisher's PLSD) (*P < 0.05, **P < 0.01, ***P < 0.001).