Fig. 1.

ABR thresholds are increased at all frequencies after noise exposure that recovered by 5 days to control (control n=3, Gingko n=9 at each dose). At 8 and 16 kHz, gingko-treated mice (6 mg/kg and 12 mg/kg) showed a better hearing level at 3 days after noise exposure. At 32 kHz, mice treated with gingko (6 mg/kg) showed a better hearing level one day after noise exposure. At the other frequencies, the gingko-treated group did not show a significant change of thresholds (^*p<0.05 compared to the control group). ABR: auditory brainstem response.