What is masking in the context of hearing tests?

Masking in the context of hearing tests refers specifically to the practice of introducing noise into the non-test ear to prevent it from responding to sound stimuli meant for the test ear. This technique is crucial when there is a significant difference in hearing sensitivity between the two ears, which can lead to misleading results. By masking the non-test ear, audiologists ensure that the responses obtained during the hearing test are representative of the test ear's true threshold and not influenced by any perceived sounds from the non-test ear.

This method allows for more accurate assessment of hearing ability because it isolates the ear being evaluated, ensuring that it is solely the test ear's sensitivity being measured. Proper masking techniques are essential for deriving valid data and making clinical decisions based on hearing test results, especially in situations where an ear has functional hearing capability and might contribute to what is thought to be the test ear's performance.