Quaranta A, Amoroso C, Cervellera G
J Aud Res. 1978 Apr;18(2):125-9.
Remote Masking (RM) (a rise in threshold for low-frequency tones when the ear is exposed to a high intensity noise band of high frequency) has been attributed to mechanical nonlinear distortion of the cochlear partition, as an effect of the envelope of a nonuniform signal. Clinical studies using RM have revealed RM is normal only when both the endolabyrinthine pressure and the cochlear hydrodynamics are normal. Increasing the stiffness of the cochlear partition affects adversely the mechanism of motion of the cochlear duct and reduces RM values. We studied RM in normal young Ss and in patients with presbycusis in order to determine whether aging of the inner ear also induces stiffness of the cochlear partition. In presbycusic Ss the RM values were indeed reduced symmetrically in both ears and progressively as a result of aging. Thus RM demonstrates the existence of cochlear conductive presbycusis and can be considered a useful test of stiffness of the cochlear partition.
远程掩蔽（RM）（当耳朵暴露于高频高强度噪声带时低频音调阈值升高）被归因于耳蜗隔板的机械非线性失真，这是不均匀信号包络的一种效应。使用RM的临床研究表明，只有当内淋巴压力和耳蜗流体动力学均正常时，RM才正常。增加耳蜗隔板的刚度会对耳蜗管的运动机制产生不利影响，并降低RM值。我们研究了正常年轻受试者和老年性聋患者的RM，以确定内耳老化是否也会导致耳蜗隔板变硬。在老年性聋受试者中，RM值确实会随着年龄增长而在双耳中对称且逐渐降低。因此，RM证明了耳蜗传导性老年性聋的存在，可被视为检测耳蜗隔板硬度的有用测试。
