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Representative psychometric functions from all four subjects at each reference frequency tested (220 Hz [A3] – 28160 Hz [A10]). Changes in corrected hit rate are shown as a function of the difference between reference and target frequencies (in both units of semitones and as a percentage change from the reference frequency). Dashed lines show 50% correct threshold. False alarm rates (measured as a percentage) on each frequency are displayed in the legend next to each subject.
