Comparison of the effects of CCAP on a preparation with different levels of starting activity.A and C, Simultaneous extracellular recordings from the dvn, mvn, and lgn.B and D, Faster chart speed of the dvn recordings in A and C, respectively. In all panels, left traces are in control saline andright traces are in the presence of 10−6m CCAP. In this experiment, CCAP was first applied to the combined preparation in which the CG and OG were left attached to the STG (A and B). Then thestn was cut, and 10−6m CCAP was applied to the STG again (C andD).