Outer hair cell loss is the primary driver of loudness recruitment

Evidence

Loss of outer hair cells impacts the shape and slope of the basilar membrane I-O function in a way very similar to loudness growth functions measured in listeners with SNHL. This correlation and the presence of loudness recruitment in listeners with mild and moderate hearing losses, who presumably have predominantly outer hair cell loss, suggest that loss of outer hair cells contributes to loudness recruitment. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 851

Categorization

• corroborated: 2 independent passages support this claim — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 851
• XREF: connects to: Noise-induced hearing loss begins with impairment of outer hair cells; The Bounce is a metabolic calcium effect, not mechanical damage to hair cells; Outer hair cell damage compresses dynamic range, causing recruitment and distorted loudness perception — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2655 (+1 more)

Broader Connections

• Outer hair cell damage compresses dynamic range, causing recruitment and distorted loudness perception #corroborates (0.95) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2655
• Loudness recruitment shrinks dynamic range while preserving overall loudness #expands (0.80)