Journey through an ear to discover how we hear sound... Physical processes - Sound - How do we hear? Learning Points The eardrum transmits vibrations to the ossicles. The cochlea sends signals to the auditory nerve. The auditory nerve carries signals from the ear to the brain. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.