Age-related endocochlear loss hits basal thresholds harder than apical ones

Evidence

Decreased endocochlear potential may have less of an effect on thresholds closer to the apex of the cochlea and a larger effect in the base (Mills et al. 2006 ) while still impacting cochlear nonlinearity. — Dijk, Pim van, Physiology, Psychoacoustics and…, 921

Categorization

• XREF: Explains why aging produces high-frequency threshold loss first, tying physiology to the classic audiometric shape of presbycusis.