Table II.

Critical Coupling Conductance and Common Interbeat Interval of Rabbit Sinoatrial Node Cells. Coupling Clamp Data

Experiment		Membrane capacitance				Input resistance				Intrinsic interbeat internal				Critical coupling conductance		Common interbeat interval*
		Cell A		Cell B		Cell A		Cell B		Cell A		Cell B
		pF				MΩ				ms				nS		ms
950111		44		36		420		650		358		331		≤0.50		342
950117		37		45		250		480		236		257		0.125–0.15		245
950131		40		39		300		460		344		424		0.20–0.30		375
950803-1		41		40		525		500		279		442		≤0.50		310
950803-2		41		39		520		510		310		390		0.15–0.17		333

^*At a coupling conductance of 10 nS.