## audiogram_presbyacusis.jpg

The image is a graph titled "Figure 7-2: An audiogram with unmasked air conduction (AC) thresholds plotted for the right and left ears." The x-axis represents frequency in Hertz (Hz), 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: circles for the right ear and crosses for the left ear. The data points are connected with lines that represent the AC thresholds at various frequencies.

To the right of the graph, there's an audiogram key explaining what each symbol means:
- A circle (O) represents "AC unmasked" for the right ear.
- A cross (X) represents "AC masked" for the left ear.
- A triangle pointing to the left (<) represents "BC unmasked" for the right ear.
- A square with a line through it (√) represents "BC masked" for the left ear.
- A checkmark (√) indicates "No response."
- An arrow pointing to the right (>) signifies "Sound-field."

The graph is sourced from Kramer & Brown's '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.