Figure 11From: Essential role of diastolic oscillatory potentials in adrenergic control of guinea pig sino-atrial node dischargeBarium increases V os and ThV os slope and amplitude, and rate of discharge. In panel A, APs in high [K+]o are shown at normal and higher gain. Ba2+ was administered as indicated above the top trace. The dots label ThVos occurring gradually sooner during DD2. In panel B, the recovery from Ba2+ exposure is shown. Inset 1 shows the changes in slope and amplitude of ThVos during (top trace) and after barium exposure (bottom trace). In inset 2 and 3, the arrows indicate the direction of change during and after barium exposure, respectively. Means and SEM are shown in inset 4. Other explanations are in the text and as in legend of Fig. 1.Back to article page