Table 2. Change in selectivity with bi-electrode vs single-electrode stimulation.

Each entry indicates the fitted slope of the bi-electrode versus single electrode selectivity data from Fig. 3, with 90% confidence intervals on the slope obtained by resampling from the data with replacement 1000 times (see Methods). The last row indicates the aggregate results from all cells across all three retinas.

Selectivity measured by thresholds mean (90% confidence interval)
	bi-electrode vs single electrode (surrogate pairings)	bi-electrode vs single electrode (real pairings)
retina 1	1.44 (1.37, 1.49)	1.39
retina 2	1.55 (1.44, 1.64)	1.40
retina 3	1.48 (1.40, 1.57)	1.55
pooled	1.47 (1.42, 1.51)	1.44