<Ul> <Li> SA node: 60--100 bpm </Li> <Li> Atrial foci: 60--80 bpm </Li> <Li> Junctional foci: 40--60 bpm </Li> <Li> Ventricular foci: 20--40 bpm </Li> </Ul> <Li> SA node: 60--100 bpm </Li> <Li> Atrial foci: 60--80 bpm </Li> <Li> Junctional foci: 40--60 bpm </Li>

How does the a.n.s modulate. the rate of discharge on pre potential