Noise exposure and age produce distinct hearing-loss signatures

Evidence

A study on a tribe of Mabaan Africans in the Sudan showed very little hearing loss due to presbycusis. Africans at the age of sixty had as good or better hearing than the average North American at the age of twenty-five. Dr. Samuel Rosen, a New York otologist under whose supervision the study was made, attributed the superior hearing ability of the Africans to their noise-free environment. The loudest sounds the Mabaan heard were the sounds of their own voices singing and shouting at tribal dances. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 621 (#contradicts, via linked claim)

Categorization

• XREF: connects to: Noise-induced hearing loss can unmask audible difference tones; Noise-induced hearing loss begins with impairment of outer hair cells; Cochlear hearing loss raises interaural time discrimination thresholds independent of age — Dijk, Pim van, Physiology, Psychoacoustics and…, 817 (+4 more)

Broader Connections

• Much age-related hearing decline stems from environmental noise, not aging itself #contradicts (0.85) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 621