Please choose the correct ending to complete the given sentence: Health: [header] How to protect your hearing [title] Understand noise-related hearing loss. [step] Frequent or prolonged exposure to loud noises is one of the most common causes of hearing loss, despite the fact that this type of hearing loss is completely preventable. [substeps] Our brain registers sound thanks to a spiral-shaped organ in the inner ear called the cochlea.

Ending1: While the sensations of the brain receive signals that call for the brain, they also experience intermittent friction in the brain. This often results in hearing loss (increase and decrease in interest in hearing your own voice). Ending2: This can cause earaches, headaches, and other issues. The patient is blind or visually impaired in the brain of the visible ear and cannot see the music or light coming from a noisy room. Ending3: The cochlea's brain generates electrical signals, which can migrate rapidly through the brain stem to the right ear lobe. When you hear this electrical signal, your brain produces information from the inner ear. Ending4: The cochlea is covered in thousands of tiny hairs which register sound vibrations and turn them into electrical impulses to be processed by the brain. When your ears are exposed to loud noises, these tiny hairs can become damaged, resulting in hearing loss.

Answer format: ending1/ending2/ending3/ending4