Skip to main content
. 2005 Jul 11;146(2):226–233. doi: 10.1038/sj.bjp.0706323

Figure 2.

Figure 2

Determination of conditions for a selective stimulation of nerve endings. (a) Example of the effect of electrical field stimulation (EFS) (pulse duration 0.1 ms, 20 Hz) on vessel diameter. (b) Effect of EFS on vessel diameter in the presence of 10− 6 M tetrodotoxin (TTX) in endothelium-intact vessels showing the existence of vessel dilations and constrictions (n=7). (c) Effect of EFS on vessel diameter in the presence of 10− 6 M TTX in endothelium-denuded vessels; no effect was observed (n=8, P=0.62). Compare also to Figure 4a showing the effect of EFS on vessel diameter in the absence of TTX in endothelium-denuded vessels.