What phenomenon occurs when bone conduction thresholds are better than air conduction, resulting in a louder perception of one's own voice?

The phenomenon where bone conduction thresholds are better than air conduction thresholds and leads to a louder perception of one's voice is known as the occlusion effect. This effect occurs when a blockage or obstruction, typically from earplugs or hearing aids, traps sound vibrations in the ear canal. As a result, bone-conducted sound waves created by one's own voice are intensified, creating the perception that one's voice sounds louder and fuller.

In typical scenarios, when the ear canal is not obstructed, sound can escape freely, and the person hears their voice as it would be perceived by others, often softer and less substantial. However, when the ear canal is occluded, the sound cannot escape, leading to better bone conduction thresholds in comparison to air conduction. This effect is most noticeable in individuals who are aware of their voice during speech or while using hearing devices that fill the ear canal.

Understanding the occlusion effect is crucial in audiology, particularly when fitting hearing aids, as it can impact how clients perceive their own voice and, consequently, their satisfaction with the device.