Figure 4. Effect of db-cAMP on the latencies in three parts of the synapse.
Upper records are 8–10 superimposed extracellular recordings of presynaptic NSs and individual EPCs before (Control), in the presence of and after washout of 1 × 10−5m db-cAMP (Wash). All recordings were obtained simultaneously in one experiment, by three extracellular microelectrodes located in three zones of the same endplate. Columns: P90 parameter (ordinates) in controls, in the presence of 1 × 10−5m db-cAMP and after 60 min washout of the drug (n = 6).