Which symbol on an audiogram typically indicates bone conduction for the left ear?

The symbol that typically indicates bone conduction for the left ear on an audiogram is represented by a circle. In audiometric notation, different symbols are assigned to depict various types of hearing tests. For bone conduction, the circle specifically represents the left ear, while the square symbolizes the right ear.

This distinction allows audiologists to accurately record and analyze an individual's hearing ability across different frequencies for both air and bone conduction. Bone conduction testing assesses the inner ear's functionality directly, bypassing the outer and middle ear, which is crucial for determining the type of hearing loss present. Understanding these symbols is fundamental for interpreting audiograms effectively and making informed decisions about hearing aids or other interventions.