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  • Title: [The relationship between loudness recruitment phenomenon and distortim product otoacoustic emission and their clinical significance].
    Author: Cui X, Jiang S, Chen H.
    Journal: Zhonghua Er Bi Yan Hou Ke Za Zhi; 1998 Oct; 33(5):294-6. PubMed ID: 11717872.
    Abstract:
    OBJECTIVE: To study the relationship between loudness recruitment and abnormal cochlear mechanism. METHODS: The basic properties of input/output (I/O) of distortion product otoacoustic emission (DPOAE) in 20 normal subjects(40 ears) and 50 cases with cochlear deafness (63 ears) with positive recruitment were studied and analyzed. RESULTS: Average slope of I/O at different frequencies in all deaf ears with recruitment was greater than those in the normal subjects with a statistical significance (P < 0.01). Moreover, thresholds of DPOAE in the recruitment positive ears were higher than those in normal subjects. CONCLUSION: Loudness recruitment and abnormal cochlear active mechanism are specially related. I/O functions of DPOAE are more perceptive and precise to appraise cochlear active mechanism. It probably may become a valuable test for early diagnosis of cochlear deafness.
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