A thorough hearing assessment includes an evaluation of each one of the three parts of the ear. Learn about hearing loss, hearing tests and hearing aids from a professional audiologist in this free health video. Expert: MJ DeSousa Contact: www. listenupcanada. com Bio: MJ DeSousa is Chief Audiologist and one of the founders of ListenUP! and is responsible for staffing and clinical practices, including all Audiology. Filmmaker: Kevin Fletcher