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Population probability densities for the distribution of auditory speech discrimination deficits in normal listeners (A) and impaired listeners (B). Black dots represent sites where auditory speech discrimination was impaired; gray lines identify sites where speech discrimination was intact. Yellow contours, 0.05 ≤ p < 0.10; orange contours, 0.10 ≤ p < 0.20; red contours, p > 0.20, where p is the probability that a site is associated with a deficit.
