| Type | MGI:General | Description | in 6 week old mice, ABR is normal between 4 and 16 kHz, shows a slightly elevated threshold at 22 kHz and a markedly elevated threshold at 32 kHz at 18 weeks, a moderate elevation in ABR threshold is seen at 11 and 16 kHz with a more severe elevation in threshold at 22 and 32 kHZ further elevation in ABR thresholds at all frequencies at 24 weeks with elevated thresholds at lower frequencies as well |
