FIG. 13.

Estimates of the sharpness of tuning in humans derived from different measurement methods, with the solid lines representing objective methods and dashed lines representing the behavioral methods. Symbols represent mean Q₁₀ values (f _tip/BW10), and error bars denote ±1SE (if available). The red lines correspond to data from this report (Q₁₀ for mean SFOAE STCs for the 10 dB SL/−6 dB SPL condition and mean PTCs are shown). Black thick line with 95 % CI (thin lines)—sharpness of tuning derived from SFOAE delays measured for a 40 dB SPL probe level (Shera et al. 2002); note: similar results were obtained by Bentsen et al. (2011); gray line with inverted triangles—SFOAE STCs recorded for a 40-dB SPL probe (Keefe et al. 2008); green line with diamonds—DPOAE STCs obtained at 10 dB SL as a function of the f ₂ frequency (Gorga et al. 2011); blue line with triangles—simultaneous-masked notched-noise data obtained at 10 dB SL (Oxenham and Shera 2003). The Q_ERB reported in the above reports were converted to Q₁₀ (where Q₁₀ = 0.56Q_ERB). Data are plotted offset along the x axis for clarity.