Hearing thresholds measured with auditory brainstem response.

<p>(<b>A</b>) Click thresholds of WT and BKα^−/− mice. Mean and S.D. (filled symbols). Single animal thresholds are shown as smaller, open symbols beside either group mean. The difference in threshold (3 dB) was statistically not significant. (<b>B</b>) Pure tone thresholds (mean and S.D.) as function of stimulus frequency for WT (black circles) and BKα^−/− mice (grey squares). Threshold curves were just significantly different, based on significant elevated thresholds at 32 kHz (*:p’ = 0.048, 1-sided t-test without alpha correction) and a drop out of threshold for BKα-/- mice at 45 kHz (star: p = 0.0262, Fisher Exact Probability Test).