Comments on the acoustic-reflex response for bone-conducted signals

Area of Science:

• Audiology
• Biomedical Engineering
• Signal Processing

Background:

• Acoustic reflex measurements are crucial for assessing auditory function.
• Previous studies using bone-conducted signals struggled to distinguish reflex responses from artifacts.
• Artifacts can lead to misinterpretations of auditory system integrity.

Purpose of the Study:

• To develop a convenient method for identifying artifacts in acoustic reflex measures.
• To validate this method using bone-conducted signals.
• To improve the reliability of acoustic reflex testing.

Main Methods:

• A novel artifact identification technique was developed.
• The method was applied to acoustic reflex measures obtained with bone-conducted signals.
• Measurements were conducted using a Grason-Stadler 1720B acoustic admittance meter and a conventional bone vibrator.

Main Results:

• The developed method effectively identified artifacts in acoustic reflex measurements.
• Artifacts were found to occur with specific equipment (Grason-Stadler 1720B) and bone vibrators.
• The presence of artifacts was confirmed for both tonal and noise-activating signals.

Conclusions:

• The proposed method is a valuable tool for differentiating artifacts from true acoustic reflex responses.
• Future research on bone-conducted acoustic reflexes should incorporate this artifact identification technique.
• Accurate artifact detection enhances the diagnostic value of acoustic reflex testing.