Figure 5. Sympathetic effects on the blood flow parameters.
A, examples of the effects of the Phe (100 μg kg−1) on the blood flow changes in MBF, LBF and SABP induced by electrical stimulation of the peripheral cut end of the left superior CST. B, the effects of the sectioning left CST on the changes in MBF, LBF and biceps femoris muscle blood flow (BBF) and SABP evoked by electrical stimulation to the central cut end of the left LN. The CST and LN were stimulated (•) for 20 s with a supramaximal voltage (10 V) at 10 Hz; and for 20 s with a supramaximal voltage (20 V) at 20 Hz using 2 ms pulses, respectively. Electrical stimulations were carried out before (control) and after (at 10 min) intravenous administration of Phe, or 10 min after the sectioning the CST.