## audiogram_withmasking.jpg

The image is a graph titled "Figure 7-3: An audiogram with unmasked air conduction (AC) and bone conduction (BC) thresholds plotted for the right and left ears." The x-axis represents Frequency in Hertz, ranging from 250 to 8000 Hz. The y-axis represents Decibels Hearing Level (dB HL), ranging from -10 dB to 120 dB.

The graph shows two sets of data points: one for the right ear and another for the left ear. Each set is represented by a different symbol:
- For the right ear, the data points are marked with circles.
- For the left ear, the data points are marked with crosses.

There are also lines connecting these points to show trends in hearing levels across frequencies. The lines for both ears slope downward as frequency increases, indicating that higher frequencies generally require louder sounds to be heard at a given level of decibels.

In the top right corner of the graph, there is an "Audiogram Key" which explains what each symbol represents:
- A circle (O) indicates unmasked air conduction thresholds for the right ear.
- A cross (X) indicates unmasked bone conduction thresholds for the left ear.
- A triangle (Δ) indicates masked air conduction thresholds for the right ear.
- A square (□) indicates masked bone conduction thresholds for the left ear.

The key also includes additional symbols:
- An arrow pointing to the right (<) and an arrow pointing to the left (>), indicating unmasked bone conduction thresholds when testing is done with a bone vibrator placed on the left mastoid bone.
- A square bracket ([ ]), indicating masked bone conduction thresholds for the left ear when testing is done with a bone vibrator placed on the right mastoid bone.

At the bottom of the image, there is a reference to the source: "From Kramer & Brown 'Audiology: Science to Practice'."

This description was generated automatically from image files by a local LLM, and thus, may not be fully accurate. Please feel free to ask questions if you have further questions about the nature of the image or its meaning within the presentation.