The cochlear nerve, also known as part of the vestibulocochlear or auditory nerve, is a sensory nerve responsible for hearing. It travels from the cochlea, a spiral-shaped structure in the inner ear, ...

A decade ago, at age 55, Don Lewis suffered a stroke in his sleep. When he woke up, he couldn't move his left arm or leg. Lewis's neighbor realized his truck hadn't moved in two days and called 911 ...