摘要
目的 检测普通话人群中掩蔽级差（masking level difference,MLD）的参考值,探讨年龄、性别以及语言背景等因素与MLD值之间的关联性,为MLD应用于临床及科研提供参考.方法 选择平均听阈＜ 20 dBHL、无耳科疾病、母语为普通话的73名健康人作为研究对象,年龄10 ～40岁,男37名,女36名.根据年龄将其分为三组：A组,10 ～ 20岁,男15名,女10名;B组,21 ～ 30岁,男13名,女14名;C组,31 ～40岁,男9名,女12名.通过美国GSI-61双通道听力计播放MLD测试光盘（AUDITEC）,测试各组受试者的MLD值,采用SPSS 16.0统计软件对不同性别、年龄等影响因素下的MLD值进行分析,并与以英语为语言背景的同类研究进行比较.结果 本组普通话受试者MLD的均值为（11.1±3.4）dB,95％正常参考值范围为4.4～17.8 dB.性别因素对MLD值无明显影响,差异无统计学意义（P＞0.05）;年龄因素对MLD值有影响,表现为MLD值随着年龄的增长而提高,差异具有统计学意义（P＜0.05）;以英语为母语者其MLD值明显高于本组以普通话为母语的受试者,差异具有统计学意义（P＜0.05）.结论 MLD用于评估听中枢处理能力时应考虑到语言背景和年龄因素的影响,需要建立不同语言背景和年龄的正常值以及用于临床的标准.
Objective A pilot study found the masking level difference （MLD） normal value of Chinese aged from 10 to 40,served to clinical practice.Method Seventy-three normal persons with hearing threshold 〈 20 dB and no disorder of otology were divided into three groups：classified 10-20 age as A group,21-30 age as B group,31-40 age as C group.MLD of age,gender and race were determined by the audiometer with dual channel by playing audio test disc.Same tests were compared with English language.Results The mean value of MLD in Chinese was （11.1 ＆#177; 3.4） dB and the 95 % normal reference values were between 4.4 to 17.8 dB.There was no difference in term of gender.The value of MLD increased with age.In the term of language,foreign showed high value of MLD than that of Chinese.Conclusions The measuring of MLD depends on age and language but not depends on gender.The normal threshold of MLD depends on age and language should be measured when normal values were applied to assess MLD in clinical practice.
出处
《中华耳鼻咽喉头颈外科杂志》
CAS
CSCD
北大核心
2014年第9期765-768,共4页
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
关键词
听力检查
知觉掩蔽
参考值
年龄因素
性别因素
Hearing tests
Perceptual masking
Reference values
Age factors
Sex factors
