Fig. 7.

Summary of electrode interaction at different probe locations and intensities. Vertical bars represent mean values of interaction for all subjects at three different intensities and three different probe locations. Error bars denote standard error. Differences in interaction between intensities for each probe location are marked with an asterisk (*) if the p value of the difference (t test) is less than 0.05. Comparison between probe electrode locations collapsed across intensities is shown at the top of the figure. N = 81, 81, and 80 for the apical, middle, and basal probe locations. Asterisks denote significant differences between groups (Tukey test, p < 0.05).