A STMs showing the effect of the NK1 receptor antagonist RP 67580 (1 μM) on Ca2+ transients in ICC-IM. B Summary data of the effects of RP 67580 on Ca2+ transient frequency, amplitude, duration and spatial spread, c=14, n=5. C STMs showing the effects of NK1 receptor agonist, Substance P (1 μM), on Ca2+ transients in ICC-IM in the presence of tetrodotoxin (TTX, 1 μM). D Summary data of the effect of Substance P on Ca2+ transient frequency, amplitude, duration and spatial spread, c=13, n=5. E STMs showing the effects of the NK1 receptor agonist, GR 73632 (1 μM), on Ca2+ transients in ICC-IM in the presence of TTX (1 μM). F Summary data of the effects of GR 73632 on Ca2+ transient frequency, amplitude, duration and spatial spread, c=11, n=4.