And the vibration of the staples applies a force on the oval window and that causes that window, that membrane, to basically vibrate and move back and forth. And as it vibrates, it causes the liquid inside to basically vibrate and forth. It initiates a mechanical wave inside our fluid known as the paralymp, inside this cochlear region. So this entire spiral region is known as the cochlea. And as the pressure wave moves into the cochlea, it bounces off and moves back, eventually hitting the round window. The round window is a second membrane inside our cochlea that basically helps the propagation and the creation of that mechanical wave.