Mean
ABR threshold shifts as functions of treatment condition and tone pip
frequency. The Control group’s data are represented by the normalized
values of 0 dB. The pooled standard error (SE) values for the 2, 4, 8, 16, and 20 kHz conditions were
0.8, 0.9, 2.7, 3.8, and 3.3 dB, respectively;
*signifies mean is significantly different from
Control values; ** signifies mean is significantly different from
corresponding Control and CIS + WR40
values.