Synchronized Progression of Prestin Expression and Auditory Brainstem Response during Postnatal Development in Rats

Figure 1

The ABR threshold changes during postnatal development. (a) The ABR waveforms recorded from a P9 rat pup. Arrows indicate ABR thresholds for 1 kHz, 16 kHz, and 32 kHz tones. The black horizontal bar on the -axis denotes the 5 ms of the stimulus. (b) The ABR tuning curve changes during development. Data are expressed as the mean ± SD. n indicates the number of animals assessed. (c) The ABR thresholds decreased with time during postnatal development. Arrows indicate the first day on which the ABR appeared for different frequencies. ; (Student’s t-test).

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