Table 1. Distributions of open durations for wild-type α7 nAChR.

[ACh]	Calcium free				1.8 mM Ca2+
	Mean open, s		Weight		Mean open, s		Weight
1 µM	1.2 × 10−5 ± 1.7 × 10−6		1.0		1.5 × 10−5 ± 3.7 × 10−6	1.0 × 10−4 ± 9.7 × 10−6	0.67 ± 0.02	0.33 ± 0.02
	n = 3				n = 6
10 µM	1.0 × 10−5 ± 1.2 × 10−6	6.1 × 10−5 ± 6.4 × 10−6	0.90 ± 0.03	0.10 ± 0.06	1.1 × 10−5 ± 1.3 × 10−6	1.2 × 10−4 ± 3.4 × 10−5	0.58 ± 0.06	0.41 ± 0.06
	n = 6				n = 4			n = 4
100 µM	1.2 × 10−5 ± 1.6 × 10−6	8.9 × 10−5 ± 1.6 × 10−6	0.55 ± 0.03	0.45 ± 0.3	1.2 × 10−5 ± 1.7 × 10−6	9.5 × 10−5 ± 8.5 × 10−6	0.59 ± 0.04	0.41 ± 0.04
	n = 6				n = 6

Time constants and relative weights of exponential components were obtained by fitting open-duration histograms for n experiments.