Hearing Loss & Tinnitus Co-occurrence

Cochlear hair cell damage, deafferentation, and tinnitus pitch-matching, simulated live.

Current Stage

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Neuron input deficit

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Tinnitus likelihood

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Amplification benefit

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Co-occurrence risk

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Hearing loss severity (dB)40

Hearing aid usedNo

Healthy hair cell

Damaged / lost hair cell

Tinnitus pitch-match zone

Cochlear neuron pathway

Hearing aid amplified signal

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Cochlear Hair Cell Damage Pattern

Noise and age damage outer hair cells first, base to apex.

OHC: Cell type first lost (outer hair cells, short placeholder)
Base: Damage onset region (high-frequency region, placeholder)
None: Recovery capacity (mammalian hair cells, placeholder)
Noise/Age: Typical trigger (short placeholder cause)

Damage mechanism

Short placeholder describing outer hair cell stereocilia damage.

Frequency-Specific Hearing Loss Mapping

Cochlear place-frequency mapping determines which pitches fade.

Base→Apex: Tonotopic axis (high to low, placeholder)
4 kHz: Common notch (noise-induced dip, placeholder)
Sloping: Audiogram shape (short placeholder pattern)
Audiogram: Mapping tool (short placeholder tool)

Frequency mapping

Short placeholder on tonotopic frequency-to-place mapping.

Reduced Input to Cochlear Neurons

Lost hair cells starve spiral ganglion neurons of input drive.

Spiral ganglion: Affected neurons (short placeholder label)
Reduced: Input signal (short placeholder change)
Early: Synapse loss (hidden hearing loss, placeholder)
Deafferentation: Downstream effect (short placeholder term)

Deafferentation

Short placeholder describing reduced afferent neural input.

Tinnitus Pitch-Matching to Hearing Loss Frequency

Central auditory gain rises, phantom tone matches loss edge.

Edge freq.: Pitch match (short placeholder mapping)
Central gain: Mechanism (short placeholder term)
High overlap: Prevalence link (short placeholder stat)
High-tone: Typical pitch (short placeholder range)

Pitch-match mechanism

Short placeholder on central compensation generating tinnitus.

Hearing Aid Amplification Benefit

Restoring audible input can reduce tinnitus salience for some.

Partial input: Benefit type (short placeholder benefit)
Variable: Tinnitus relief (short placeholder outcome)
Matched loss: Best candidates (short placeholder note)
Sound therapy: Common addition (short placeholder combo)

Amplification effect

Short placeholder on hearing aid restoring cochlear input.

Short placeholder key insight about amplification and tinnitus relief.