Understanding How We Perceive Sound

The video explains how we perceive sound through hearing. Sound waves enter the ear canal, causing the eardrum to vibrate, which moves the tiny bones in the middle ear. The stirrup bone, the smallest in the body, transmits vibrations to the cochlea, where cilia convert them into nerve impulses for the brain to interpret. High and low frequencies are detected at different parts of the cochlea. Prolonged exposure to loud sounds can cause hearing loss. Sound intensity is measured in decibels, with safe levels between 10 and 80 decibels. The video concludes with a review and quiz on key concepts.

Explain how sound waves are converted into nerve impulses.

What is the range of decibels that the human ear can comfortably hear?