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. 2005 Jan 27;563(Pt 3):855–865. doi: 10.1113/jphysiol.2004.077636

Figure 3. Pharmacological isolation of an EJP induced by oral NS resistant to atropine and guanethidine in the presence of nifedipine.

Figure 3

Aa, 1 pulse NS. Bb, 4 pulse NS. The stronger (4 pulse) NS produced a larger fast IJP, followed by a slow IJP and postinhibitory EJP. Bai and ii, junction potentials induced by NS of 1 and 4 pulses 5 min after application of apamin. Bbi and ii, junction potentials superimposed before (panel A) and after apamin. Cai and ii, junction potentials 10 min after atropine and guanethidine in the presence of nifedipine and apamin. Cbi and ii, overlapped junction potentials from panel Ba and panel Ca. Application of apamin converted the IJP to an EJP followed by a slow IJP, which was not affected by concomitant application of atropine and guanethidine.