Changes in gA⁻(13) channel lifetimes (τ₁₃) as a function of the corresponding changes in AgA(15) channel lifetimes (τ₁₅). Gray data are from Lundbæk et al. (2010b). The colored results are from this study; each point represents the average value from two to seven experiments. Color code: olive, troglitazone (TRO); pink, rosiglitazone (ROS); orange, ciglitazone (CIG); gray, pioglitazone (PIO). Linear fit (solid line) to the data points has a slope of 1.24 (r = 0.997).