Analysis of broadband sinusoidal harmonic acceleration test results for normal young people
10.3760/cma.j.cn115330-20191219-00766
- VernacularTitle:健康青年人宽频正弦谐波加速试验结果分析
- Author:
Wei WANG
1
;
Shanshan LI
;
Taisheng CHEN
;
Kaixu XU
;
Xi HAN
;
Qiang LIU
;
Chao WEN
;
Peng LIN
Author Information
1. 天津市第一中心医院耳鼻咽喉头颈外科，天津市耳鼻喉科研究所 300192
- Keywords:
Vestibular function tests;
Sinusoidal harmonic acceleration test
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2020;55(5):479-482
- CountryChina
- Language:Chinese
-
Abstract:
Objective:We tested more frequency (0.01-3.0 Hz) of the sinusoidal harmonic acceleration test(SHAT) by the NKI rotation chair, aimed to analyze the results of the normal youth.Methods:Fifty normal young people were tested with sinusoidal harmonic acceleration by NKI rotation chair. Including 24 men and 26 women, aged from 20 to 40 years old, with median age of 27 years, with no vestibular dysfunction participated in the present study. All the volunteers accepted the sinusoidal harmonic acceleration test by the NKI rotation chair, the frequency included 0.01 Hz, 0.02 Hz, 0.03 Hz, 0.05 Hz, 0.1 Hz, 0.2 Hz, 0.3 Hz, 0.6 Hz, 1.0 Hz, 1.5 Hz, 2.0 Hz, 3.0 Hz. Taken the gain, phase, and asymmetry as the parameters, the trait of each frequency was analysed.Results:From 0.01 Hz to 1.5 Hz, the gain increased close to 1 gradually, and with fluctuates slightly at the 2.0 Hz and 3.0 Hz frequencies. The phase decreased as frequencies increased close to 0 at 0.3 Hz. The frequency above 0.6 Hz presented negative. Asymmetric values were distributed on both positive and negative sides at each frequency and were different from each other, both values were less than 20%.Conclusion:Broadband SHAT can accurately assess the horizontal semicircular canal function at different frequencies in a wider frequency range, and objectively, reflect the physiological function of the horizontal semicircular canal, and expand the clinical value of traditional SHAT.
