Figure 2.

Behavioral hearing tests. a, Pure-tone audiograms for the NH (top) and HI (bottom) subjects. Each thin line represents the audiogram for a single subject averaged over both ears. The thick lines represent averages across subjects. b, SRTs in the two groups measured in a speech-in-noise recognition task. c, Self-assed hearing disabilities as assessed by the SSQ questionnaire. Lower ratings indicate greater self-rated listening difficulties in everyday acoustic environments. The SSQ scores shown here are averaged over three SSQ subsections (speech, qualities, and spatial). d, Tone detection in noise with or without a 50 ms temporal gap. HI listeners showed less temporal release of masking (RoM), i.e., they showed a smaller benefit from temporal gaps in the noise masker compared with NH listeners. e, Working memory performance as measured by a backward digit span test.