Measurement of middle-ear muscle reflexes (MEMR) constitutes an important component of the standard of care in auditory function assessment and diagnostic audiology. An important component of the middle-ear test battery involves characterizing neural function through the eighth nerve-brainstem pathway which is accomplished through measurement of the MEMR. The evaluation component of this project will involve testing of human subjects using wideband acoustic immittance in the evaluation of middle-ear muscle reflexes. Subjects in this project will be infants, children and adults with normal hearing as well as with conductive, sensory, and neural hearing loss. All subjects will receive wideband acoustic immittance (WAI) and middle-ear muscle reflex (MEMR) testing. Baseline testing includes pure tone audiometry and otoacoustic emissions.
