Figure 12.

Parametric scatter plots of $Q_I(t)$ vs $IF(t)$ in normal ears at stimulus peSPLs from 73 dB down to 55 dB. Regression model fit (solid line) and 95% CI (dashed lines) for subset of data with $IF\ge 4$ kHz. Model intercept $Q_I(1)$ at $IF=1$ kHz and exponent $m,$ i.e., $Q_I=Q_I(1)\times I{F}^m.$