Top left: Individual data showing the rate at which the maximum alternation occurred for
each subject and level. Low, medium, and high levels are indicated by black, gray, and
white bars, respectively. Top right: group mean (bar height), +1 SD (lines), and
median (white circles) values representing the rate at which the maximum alternation
occurred for each level. Bottom row: histograms for low to high stimulus levels (left to
right, respectively) indicating the number of ears that demonstrated maximum alternation
at each rate.