Individual ILD sensitivity is largely set by peripheral level-coding efficiency.

Evidence

The thresholds for the ILD and LEVEL tasks correlated for both the lowand high-frequency stimuli. This confirms the results of our earlier study (Ochi et al. 2014 ), suggesting that the efficiency of level coding in the auditory periphery is a major factor accounting for inter-individual variation of ILD sensitivity. — Dijk, Pim van, Physiology, Psychoacoustics and…, 1026