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观察100例双侧感音神经性聋患儿的声反射阈(ART)在各种声讯号(500,2000H z纯音和白噪声)刺激下与舒适响度(CL)和不适响度(DCL)级之间的关系。另选25名听力正常的同龄儿童作对照。作者测量了两组儿童的平均ART和CL及DCL级,结果可以看出,在白噪声刺激时的ART低于纯音刺激时,这在聋儿组表现的比正常组更明显。正常听力组ART在CL与DCL级之间,而更接近于后者。聋组ART在各种声音刺激下均高于CL和DCL级。统计学处理证明聋组儿童ART与CL和DCL级之间呈正相关关系。用2000Hz纯音和白噪声刺激所测得的ART值之差,和白噪声响度的动态变化幅度大小也有着正相关关系。患感音性聋的学龄儿童,用500 Hz纯音刺激所得的ART与最佳语言识别率的水平相当。作者最后指出,所获结果证
The acoustic reflex threshold (ART) of 100 children with bilateral sensorineural deafness was evaluated with the comfort loudness (CL) and the uncomfortable loudness (DCL) levels stimulated by various acoustic signals (500,2000 Hz pure and white noise) Relationship between. Another 25 normal children of the same age as control. The authors measured mean ART, CL and DCL levels for both groups of children, and as a result, it can be seen that ART is more pronounced in the deaf group than in the normal group when ART at white noise is lower than pure tone. The normal hearing group, ART, is between CL and DCL and closer to the latter. ART in deaf group was higher than those in CL and DCL under various sound stimuli. Statistical analysis showed that there was a positive correlation between ART, CL and DCL in children with deafness. The difference between the measured ART values stimulated by the 2000 Hz pure tone and white noise stimuli also has a positive correlation with the magnitude of the dynamic change of white noise loudness. ART-stimulated ART at 500 Hz was comparable to the best speech recognition rate for school-age children with sensorineural hearing loss. The author finally pointed out that the results obtained