Change in auditory threshold and loudness perception according to bDLF.

To compare the change in auditory threshold and perceived loudness scaling at the bDLF, a two-way repeated measures ANOVA was performed at the reference frequency and frequencies surrounding bDLF (Fref, bDLF-1/8 octave, bDLF and bDL+1/8 octave), comparing results before and three months after rehabilitation. No significant change in loudness perception was found after rehabilitation (F(1,12)=3.267, p=0.145). Loudness perception was not significantly different between specific frequencies (F(3,12)=2.154), p=0.147). Nor was there any interaction between frequency and rehabilitation time-course (F(3,12)=2.243, p=0.136). No significant effect on hearing threshold was found for auditory rehabilitation time-course (F(1,12)=0.904, p=0.396), but an effect was found for frequency (F(3,12)=5.470, p=0.013), post-hoc Tukey tests revealing that the auditory threshold difference was significant between fref and bDLF+1/8 octave (p=0.008). No significant interaction was found (F(3,12)=1.289, p=0.323).