强烈的噪音会导致老年性耳聋和耳鸣.

Loud noise contributes to presbycusis and tinnitus.

结论老年人螺旋神经节细胞减少，细胞质内脂褐素沉积，可能是导致老年性耳聋的主要原因之一。

Conclusions These results suggest that the decrease of spiral ganglion cells and the deposition of lipofuscin in the aged may be the main cause of presbycusis .

结论: 老年性耳聋患者配戴全数字助听器效果优于模拟助听器.

Conclusion: The digital aid has more satisfied effects on elder deafness than the imitating aid does.