Figure 1. Effects of genotype, age and auditory stimulus on ABR thresholds.
ABR thresholds (means ± standard errors) are compared among mice with four different digenic genotypes of Cdh23 and Sod1, all on a uniform C57BL/6J background. Mice were tested at 6, 9, 12, and 15 months of age, and ABRs were recorded for broad-band click and 8 kHz, 16 kHz, and 32 kHz pure tone stimuli. The numbers of mice evaluated for each genotype and test age are given in Table 1.