Fig. 6.

TDS and DFS plots for the EEOAE data shown in Figure 5a,b. There was significant LDC for the baseline measure (a), which was eliminated one day postexposure (b), and did not recover by two weeks postexposure (c). Contour lines (and shaded areas) indicate 0.00004 Pa changes in amplitude. Amplitudes in the short-delay region exceeding 0.00020 Pa are all in white, and can be distinguished by additional contour lines. Increase observed in the EEOAE amplitude (Fig. 5a) is associated with an increase in the SDC amplitude (b,c).