Figure S2. Effect of phosphoinositides on Ih current amplitude. Current amplitudes of individual patches expressing HCN2 (black squares) and their mean values (red circles) 10 min after application of several phosphoinositides. Phosphoinositide nomenclature is defined in the main text. Values were normalized to the current amplitude 1.5 min prior to phosphoinositide application. Error bars show SEM. Differences between the mean values were not statistically significant (ANOVA, P > 0.35).