Related Experiment Video
Updated: Feb 14, 2026

Discovering Middle Ear Anatomy by Transcanal Endoscopic Ear Surgery: A Dissection Manual
Published on: January 11, 2018
Effect of Body Mass Index on Middle Ear Resonance Frequency
Miray Sözen1, Işılay Öz1, Selim Erbek1
1Department of Ear, Nose and Throat, Başkent University School of Medicine, Ankara, Turkey.
Objective:
Multifrequency tympanometry (MFT) analyzes tympanograms obtained using different probe tones between 226 and 2000 Hz. An important parameter of MFT is resonance frequency (RF). Studies have recently demonstrated that the RF value can vary depending on many factors. To provide new data regarding MFT, middle ear RF values were investigated with regard to body mass index (BMI).
Materials And Methods:
This study included 78 volunteers (i.e., 156 ears) aged 18-40 years who did not have hearing loss and whose otoscopic examinations were normal. Hearing thresholds were measured using pure tone audiometry, and RF values were recorded with immitansmetric measurements. The participants were divided into the following three groups according to their BMI: <18.5 kg/m2, Group 1; 18.5-24.9 kg/m2, Group 2; and >25 kg/m2, Group 3. The RF values were also analyzed.
Results:
Although there was no significant difference between Groups 1 and 2 in terms of RF values, a significant difference was observed between Groups 1 and 3 and between Groups 2 and 3.
Conclusion:
In the light of these data, BMI values should be considered when middle ear RF values are assessed.
More Related Videos
Related Concept Videos
Frequency of Spring-Mass System
Consider a block on a spring on a frictionless surface. There...
Reduced Mass Coordinates: Isolated Two-body Problem
Resonance
Anatomy of the Ear
Frequency-dependent Selection
Atomic Mass

