Portland State University. Department of Speech Communication
Date of Award
Master of Science (M.S.) in Speech Communication
1 online resource (59 p.)
Electrocochleography, Acoustic reflex -- Measurement, Hearing levels
The acoustic reflex refers to the contraction of a middle ear muscle in response to sound. The contraction causes a stiffening of the middle ear system and, consequently, the flow of acoustic energy to the cochlea is impeded. By measuring the change in admittance in the auditory system during sound stimulation it is possible to indirectly monitor the middle ear muscle contractions. Such measurements provide useful information regarding the integrity of the auditory system and the location of the auditory pathology.
Jones, Karen Elizabeth, "High frequency acoustic reflexes in cochlea-impaired and normal ears" (1990). Dissertations and Theses. Paper 4096.