Given how often we see newborns in need of hearing testing , we have produced a video showing how the two main types of non-verbal hearing tests are performed today: Auditory Brainstem Response (ABR) and Otoacoustic Emission (OAE). Given newborns can not communicate whether they can hear or not, such hearing tests depend on the ability to detect nerve signals transmitting sound information from the ear all the way to the brain. This type of test is much like an EKG which can detect the el…