Figure 5.

Hearing thresholds. A) Hearing thresholds for the vowel /a/ as a function of age in a relative dB scale. The line represents the linear regression line (R² = 0.16, F(1,16) = 3.04, p = 0.1). B) Hearing thresholds for the vowel /a/ as a function of the first P1m amplitude. Linear regression: R² = 0.05, F(1,16) = 0.94, p = 0.35. C) Hearing thresholds for the vowel /a/ as a function of the first N1m amplitude. Linear regression: R² = 0.08, F(1,16) = 1.44, p = 0.25. D) Hearing thresholds for the vowel /a/ as a function of the relative amplitude of the second N1m. Linear regression: R² = 0.18, F(1,16) = 3.42, p = 0.08.