Fig. 5. Increase of DPOAE in Foxg1-Cx26+/− mice.
Mice were 2 months old. (A and B) Spectra of acoustic emission recorded from WT, Foxg1-Cx26+/−, and Foxg1-Cx26−/− mice. DPOAEs were evoked by two-tone stimulation. f0 = 16 kHz, I1/I2 = 60/55 dB SPL. Insets: Large-scale plots of 2f1-f2 and f1 peaks. The peak of 2f1-f2 in Foxg1-Cx26+/− mice was increased, while f1 and f2 peaks remained the same as those in WT mice. A pink trace in (B) represents no DPOAE peak visible in Foxg1-Cx26−/− mice. (C) DPOAE in Foxg1-Cx26+/− mice is increased in comparison with WT mice. I/O function of DPOAE in Foxg1-Cx26+/− was shifted up to ~10 dB SPL. No DPOAE is visible in Foxg1-Cx26−/− mice. (D) DP gain (2f1-f2 re: f1) in Foxg1-Cx26+/− mice. In comparison with WT mice, DP gain in Foxg1-Cx26+/− mice was significantly increased by 5 to 10 dB. *P < 0.05 and **P < 0.01, two-tailed t test.
