1. Inner Ear Case Med 6573: Nervous System University of Minnesota Medical School Duluth 16 and 19 February 2007 Drs. Nordehn, Forbes & Fitzakerley Mr. Rodney Mott is a 46-year-old carpenter, who has trouble hearing and some problems with dizziness.

2. Audiometry

4. A B D C Otoacoustic Emissions Test

5. Interpret the procedural findings (audiometry, radiology report and otoacoustic emissions) in the context of Mr. Mott’s case. What is your diagnosis?

6. Faculty Learning Issues Describe the components and physiology of the vestibulo- ocular reflex, and relate these components to the evaluation of nystagmus. Distinguish among conductive and sensorineural hearing loss and central auditory processing disorders. Define how each type of hearing loss would alter the patient’s audiogram from normal. Describe the physiological basis for and the interpretation of: Rinne and Weber tests, audiometric testing, otoacoustic emission and ABR testing. List risk factors for hearing loss and vertigo that should be identified during history taking and/or evaluated during the physical exam.