Conductive and cochlear losses produce different loudness growth patterns

Evidence

Figure 19.1 Conceptual loudness-matching functions that visualize the SPL needed for a hearingimpaired person to achieve equal loudness as a normally hearing individual: normal hearing, conductive hearing loss, and cochlear hearing loss (recruitment due to outer hair cell damage). Adapted from Moore (2007). — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2657

Categorization

Category: Definitional Content

• DEFINE: Defines the distinction between conductive loss (flat attenuation of loudness) and cochlear loss with recruitment (steep loudness growth).

Related

• Sensorineural hearing loss produces rapid loudness growth while discomfort thresholds stay normal (similarity 0.87)
• Loudness-growth slope increases with hearing-loss degree but resists exact prediction (similarity 0.87)
• Recruitment makes loudness grow faster in impaired ears than normal ears. (similarity 0.86)
• Hearing-impaired listeners experience a steeper loudness-growth function known as recruitment (similarity 0.84)
• Sensorineural hearing loss compresses the full loudness range into fewer decibels (similarity 0.83)
• Sensorineural hearing loss causes abnormal rapid loudness growth called recruitment (similarity 0.83)
• Cochlear damage produces distinct perceptual deficits depending on which cell type is affected (similarity 0.83)
• Equal-loudness contours reflect outer and middle ear amplification characteristics. (similarity 0.83)
• Hearing loss squeezes the full loudness range into a much smaller dynamic range (similarity 0.83)
• Outer hair cell loss is the primary driver of loudness recruitment (similarity 0.82)
• The full loudness range squeezes into a smaller dynamic range for impaired listeners. (similarity 0.82)
• Hearing loss combines two distinct pathologies that impair separate processing stages (similarity 0.82)
• Loudness recruitment shrinks dynamic range while preserving overall loudness (similarity 0.81)
• Mild and severe hearing losses produce opposite loudness growth patterns (similarity 0.81)
• Cochlear hearing loss spares amplitude modulation detection but distorts perceived fluctuation depth (similarity 0.81)