Objective: to study the effect of stochastic resonance on hearing sensitivity.

目的：研究听觉的随机共振效应。

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But unlike vision or hearing loss, which is often apparent to others, if not to the afflicted person, a loss of smell sensitivity with age is often undetected because it occurs gradually.

不像失明和失聪那样相对于别人(不受此问题困扰的人)常常很明显，伴随年龄增长的嗅觉丧失常常意识不到，因为它的产生我渐进的。

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The research revealed that touch sensitivity was highly heritable and connected closely with hearing ability.

研究显示，触摸能力是可以高度遗传的而且和听觉能力密切联系。

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Several weeks later, although hearing sensitivity had recovered to normal levels, activity in the auditory nerve connecting the inner ear to the brain remained impaired.

BBC: Viewpoint: Does deafness contribute to dementia?

Such "hidden" hearing loss, not evident in the audiogram (a test that measures hearing sensitivity), is also apparent in human listeners who experience persistent tinnitus, but otherwise normal sensitivity.

BBC: Viewpoint: Does deafness contribute to dementia?