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DPOAE 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). The gingko-treated group shows a better threshold at 7 days after noise exposure at 4 kHz. At the other frequencies, there was no significant difference between experimental and control groups (*p<0.05 compared to the control). DPOAE: distortion product otoacoustic emission.
