Study of characteristic of the cochlear hydrops analysis masking procedure in normal adults
10.3760/cma.j.issn.1673-0860.2011.06.009
- VernacularTitle:健康成年人高通噪声掩蔽听性脑干反应研究
- Author:
Ying-Ying SHANG
1
;
Wen-Wen DIAO
;
Dao-Feng NI
;
Chun-Xiao XU
;
Zhi-Qiang GAO
;
Feng-Rong LI
Author Information
1. 中国医学科学院,北京挤和医学院,北京协和医院
- Keywords:
Evoked potentials auditory brain stem;
Noise;
Meniere disease
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2011;46(6):480-484
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the characteristic of the cochlear hydrops analysis masking procedure ( CHAMP) in normal adults, and to evaluate the diagnostic values of its parameters for logic auditory evoked potential system: clicks presented alone (unmasked condition) and clicks presented with ipsilateral pink noise high-pass filtered at 8 , 4, 2, 1, and 0. 5 kHz respectively. Results The wave V latency of ABR to the high-pass masking pink noise clicks were longer than ABR to clicks alone. The latency delays of wave V for clicks presented with ipsilateral pink noise high-pass filtered at 8 , 4, 2, 1, and 0.5 kHz compared to clicks alone were (0.30 ±0.18), (0.97 ±0.43), (1.65 ±0.64), (3.21 ±0.56),(4. 66 ± 0. 37 ) ms respectively. The complex amplitude ratio between ABR to click + 0. 5 kHz high-pass noise and click alone was 0.95 ±0.11. Conclusions CHAMP is a promising diagnostic method for membranous labyrinth hydrops, and the latency delay of wave V might be used as the normal criterion. The specificity of the complex amplitude ratio need furthur evaluation in clinical work.
