A comparison of electrocochleography recording techniques.

Area of Science:

• Audiology
• Neurophysiology
• Otoacoustic Emissions

Background:

• Electrocochleography (ECoG) is crucial for diagnosing auditory disorders.
• Accurate measurement of summating potential (SP) and action potential (AP) amplitudes is vital.
• Comparing different recording montages can optimize diagnostic procedures.

Purpose of the Study:

• To compare the summating potential/action potential (SP/AP) amplitude ratios obtained from horizontal and vertical electrocochleography recording montages.
• To assess the agreement between these two montages in a clinical setting.
• To determine if horizontal and vertical montages can be used interchangeably for SP and AP identification.

Main Methods:

• Dual channel electrocochleography recordings were performed on 50 ears from 25 patients.
• SP/AP amplitude ratios were calculated for both horizontal and vertical recording montages.
• Statistical analysis was employed to compare the agreement between the two montages.

Main Results:

• A good agreement was observed between the SP/AP amplitude ratios from horizontal and vertical montages.
• The established normal criterion for SP/AP ratios demonstrated consistency across both recording configurations.
• Findings suggest interchangeability of the montages under normal criteria.

Conclusions:

• Horizontal and vertical electrocochleography montages show good agreement for SP/AP ratio measurements.
• These findings support the potential for interchangeable use of horizontal and vertical montages in clinical electrocochleography.
• Further statistical analysis is warranted to confirm interchangeability and improve SP/AP potential identification.