Figure 2

Almost complete normalization of bone conduction with only a mild deficit (threshold of 25dBnHL at 1 to 2 kHz). An air-bone gap on low frequencies remained after therapy. Blue cross, left ear conduction; blue open arrow, left ear bone conduction; blue square, left ear conduction with narrow band note masking on the opposite ear; blue triangle, left ear bone conduction with narrow band note masking on the opposite ear; red circle, right ear air conduction; red open arrow, right ear bone conduction.