Fig. 6. Comparison of characteristics of the muscarinic motor patterns determined from 50 s stretches of activity in five preparations before and after application of the soluble guanylyl cyclase inhibitor 1H-(1,2,4)oxa-diazolo(4,3a)-quinoxalin-1-one (ODQ). Depending on the mean bursting frequency, the observation period covered 31–55 cycles. (A) Frequency of bursting. (B) Mean duty cycle (burst duration divided by cycle period). (C) Intra-burst frequency. (D) Number of units distinguishable in the extracellular recordings by visual inspection. cl, closer; op, opener; oxo., oxotremorine; pilo., pilocarpine. Values are mean + S.D.