The Hearing Mechanism: A Guide for Laymen
Can you hear a whispered voice? Can you hear different types of sound, such as a conversation or music? Everyone with normal ears should answer, “Yes, I can hear these sounds”. Nevertheless, since 1837, science has tried to answer two important questions: how do human ears allow us to hear faint sounds, such as a whispered voice, and how do they allow us to hear sounds at various frequencies? The famous German scientist Helmholtz  (1821–1894) attempted to answer these two questions by examining the sensitivity of the ear and its analysis of sound. The human ear consists of the outer, middle, and inner ears (Fig.1). The middle ear plays an important role in the sensitivity of the ear, while the inner ear analyzes sound.
KeywordsHair Cell Basilar Membrane Cochlear Nucleus Sound Signal Sound Frequency
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