What is the masked bone conduction symbol for the left ear?

The masked bone conduction symbol for the left ear is represented by a square. In audiology, different symbols are used to indicate various types of hearing tests and the ear being tested. For bone conduction testing, masking is applied when there is a possibility of cross-hearing, and the square symbol signifies that the test was performed on the left ear under these conditions.

This differentiation is crucial in audiometric testing, as it helps audiologists accurately represent the results of hearing assessments, especially when determining the type and degree of hearing loss. Each symbol within the audiogram has specific meanings that correspond to the ear and the method of testing, ensuring clear communication between audiologists and other health professionals regarding a patient's hearing abilities.