Table 1.

I_f characteristics,* p < 0.05 vs. control, ^#p < 0.05 vs. ivabradine 3 μM.

	Control	Ivabradine	Ivabradine	Ivabradine
		3 μM	10 μM	30 μM
		(n = 9)	(n = 9)	(n = 9)
V1/2 activation (mV)	−68 ± 4	−70 ± 4	−74 ± 4 *	−77 ± 5 *
		(p = 0.07)	(p = 0.02)	(p = 0.04)
Max τact	157 ± 11	120 ± 17	106 ± 17 *	80 ± 13 *
(ms)		(P = 0.5)	(P = 0.05)	(P = 0.02)
If density (pA/pF)	4.5 ± 0.7	2.1 ± 0.3 *	1.6 ± 0.2 *	1.1 ± 0.2 *,#
(V = control V1/2 activation)		(P = 0.04)	(P = 0.008)	(0.004)
If (pA/pF) (V = MDP)	3 ± 0.43	2 ± 0.3 *	1.5 ± 0.2 *	1.3 ± 0.2 *
		(P = 0.045)	(P = 0.04)	(P = 0.01)