Exam Preview for 34247: Intra- and Post-Operative Electrocochleogra

Intra- and Post-Operative Electrocochleography in Cochlear Implants

Please note: exam questions are subject to change.

1. Electrocochleography is used to measure electrical potentials from the: Cochlea and auditory nerve Middle ear Parietal lobe Stapedial muscle
2. Cochlear microphonics is primarily generated by the: Auditory cortex Outer hair cells Inferior Colliculus Middle ear
3. During cochlear implant electrode placement the _________ electrode is used as the recording electrode. Most basal Most apical Case Ring
4. __________ is used to detect cochlear trauma and monitor cochlear implant electrode placement. Auditory nerve neurophonics Compound action potential Summating potential Cochlear Microphonics
5. In patients with pre-operative residual hearing, ____________ stimulus is used to elicit cochlear microphonics during cochlear implant surgery. Electrical Infrared Acoustic Ultrasonic
6. __________ thresholds show a good correlation with air-conduction thresholds in cochlear implant patients with postoperative residual hearing. Cochlear Microphonics Stapedial reflex Auditory Nerve Neurophonics All of the above
7. Ideally, a cochlear implant electrode should be placed entirely into the: Scala Vestibuli Scala tympani Scala media All of the above
8. Cochlear microphonics is calculated by _____________ the electrical responses measured for the alternating polarity stimulus. Multiplying Subtracting Adding Dividing
9. Auditory Nerve Neurophonics is primarily generated by the: Middle ear Malleus Auditory Cortex Auditory Nerve
10. __________ is calculated by adding the electrical responses measured for the alternating polarity stimuli. Stapedial reflexes Cochlear microphonics Auditory Nerve Neurophonics None of the above