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Chronogram of the experiment. Mice were exposed to Violet Swept-sine (VS) noise with different intensities (105 or 120 dB SPL) and frequency ranges (2–20 or 9–13 kHz) for 30 min. Hearing was evaluated with Auditory Brainstem Responses (ABR) and Distortion Products of Otoacoustic Emissions (DP) before (baseline) and 2, 14 and 28 days after noise exposure. At the end of the study, cochleae were dissected and processed for histology and cell counting.
