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The best technique is the ECochG, although in many cases, the CNAP should be used as a back-up technique. The CNAP is especially useful for the identification of the auditory nerve. Both can provide real-time feedback on the physiological integrity of the auditory nerve. The ABR may be helpful in monitoring brainstem function. For some procedures, optimal monitoring requires the combined recording of all three techniques.<\/jats:p><jats:p>Monopolar constant-voltage intracranial stimulation of the facial nerve is helpful for the identification and preservation of the facial nerve. Audio monitoring of spontaneous electromyographic activity provides real-time feedback on the effect of surgical manipulation of the nerve. Monitoring of ephaptic transmission in the facial nerve during microvascular decompression for hemifacial spasm aids in the identification of the offending vessel.<\/jats:p>","DOI":"10.1017\/s0317167100027232","type":"journal-article","created":{"date-parts":[[2016,7,28]],"date-time":"2016-07-28T11:39:16Z","timestamp":1469705956000},"page":"73-81","source":"Crossref","is-referenced-by-count":28,"title":["Electrophysiological Monitoring During Acoustic Neuroma and Other Posterior Fossa 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