Electrically evoked otoacoustic emissions (EEOAEs) were assessed in response to intra-cochlear electrical stimulation using a frequency sweep paradigm. Emissions were assessed using this paradigm for a single animal (P161); testing was conducted on day 45 post-implant. For all other subjects, testing was limited to 5.6, 8, 11.2, and 16 kHz, with each frequency presented at 0 (noise floor), 5, 10, 20, and 30 μA as shown above using the frequency sweep paradigm. The results were equivalent in that EEOAE amplitude grew with increasing current level.