What causes damage to the structures responsible for hearing when sound levels are too high?

Exposure to excessive noise causes injury to the hearing mechanism, particularly damaging the hair cells in the cochlea.

What is the consequence of injury caused by prolonged exposure to loud sounds?

The injury results in hearing loss, where the ability to detect and perceive sounds is diminished.

How is hearing loss from noise exposure reflected in audiometric measurements?

It produces measurable changes in equal loudness curves, showing altered sensitivity across frequencies.

What happens to hearing ability as a person gets older, even without exposure to damaging noise?

Hearing deteriorates naturally with increasing age due to gradual degeneration of auditory structures.

What is the outcome of age-related deterioration of the auditory system?

It results in hearing loss, reducing the ability to detect sounds, particularly at certain frequencies.

How does age-related hearing loss appear on audiometric tests?

The hearing loss is reflected in altered equal loudness curves, showing reduced sensitivity compared to normal hearing.

AQA A-Level Physics 7408

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Medical PhysicsOptional topic

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Medical Physics

Defects of hearing

3 things to know
Paper 3, section B

Overview

Noise-induced and age-related hearing loss, and how each appears on an audiogram.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Process

What damage does prolonged loud noise cause, and how does it show on an audiogram?

Process

How does age-related hearing loss appear on tests, and which frequencies suffer most?

Numbers

What distinctive feature on an equal loudness curve suggests damage from excessive noise exposure rather than age?

Questions from this subtopic

Each one with the model answer underneath.

1
What causes damage to the structures responsible for hearing when sound levels are too high?
Model answer
Exposure to excessive noise causes injury to the hearing mechanism, particularly damaging the hair cells in the cochlea.
2
What is the consequence of injury caused by prolonged exposure to loud sounds?
Model answer
The injury results in hearing loss, where the ability to detect and perceive sounds is diminished.
3
How is hearing loss from noise exposure reflected in audiometric measurements?
Model answer
It produces measurable changes in equal loudness curves, showing altered sensitivity across frequencies.
4
What happens to hearing ability as a person gets older, even without exposure to damaging noise?
Model answer
Hearing deteriorates naturally with increasing age due to gradual degeneration of auditory structures.
5
What is the outcome of age-related deterioration of the auditory system?
Model answer
It results in hearing loss, reducing the ability to detect sounds, particularly at certain frequencies.
6
How does age-related hearing loss appear on audiometric tests?
Model answer
The hearing loss is reflected in altered equal loudness curves, showing reduced sensitivity compared to normal hearing.

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