Figure 5.

Average frequency shifts at DPOAE fine structure extrema as a function of contralateral noise level. Triangles and squares represent minima and maxima, respectively. The frequency of a given extrema in the NoN condition established the baseline from which the frequency shifts were calculated. A second NoN condition was included for test∕retest reliability. Error bars represent one standard deviation. Three maxima and three minima from each of eight subjects (24 total points) were averaged.