A frequency peak at 3.1 kHz obtained from the spectral analysis of the cochlear implant electrocochleography noise
Fig 2
Timeline of the 9-minutes protocol.
The protocol included three periods of cochlear implant electrocochleography (ECOCHG) recordings. The first and last three-minutes periods were acquired in spontaneous (silent) conditions, while the middle period included acoustic stimulation with 0.5 or 2 kHz tones. Each three-minutes period included 3600 trials. The 3600 trials of the stimulation period included 1800 trials of two 180° alternating polarity stimuli.