FIG. 2.

RI functions and tinnitus spectra inversely track the region of threshold shift in bilateral tinnitus. A Hamilton and Vancouver cohorts are shown separately. B Grand averaged results. The data point to the left in each panel gives RI depth induced by white noise (WN). The arrow denotes the “audiometric edge” of normal hearing (the stimulus frequency adjoining the frequency at which the hearing threshold falls above 25 dB HL on the audiometrically reversed dB axis). Error bars denote 1 standard error in this and subsequent figures.