I. Electrode conditioning (only before start-up) After electrode implantation, there will be electrochemical obstructions between the electrodes and the cochlear tissue, such as: proteins or air bubbles. In order to adjust the electrodes to a power-on ready state, a low level current can be introduced to remove the accumulated proteins or air bubbles from the electrodes, while measuring the impedance of each electrode. II. Nerve response imaging (required before both power-up and subsequent tuning) Measures the nerve response of each electrode. Neuroresponse imaging can be used during or after cochlear surgery to assist in determining the level of stimulation for power-up and tune-up, to confirm the function of the auditory nerve, and to assess whether the cochlear implant is functioning properly. Neuroresponse imaging is performed prior to both start-up and tuning. For more cooperative users, the most comfortable amount of electrode stimulation for the child is determined by subjective reports and neurological responses: the M value. For those who cannot cooperate, for example: users with cochlear implants before the age of 3, and those who have not had previous hearing and speech training, the main thing is to rely on the neurological response to determine it. Note: Whether a child cries or not can be taken as the child’s response to sound, but children don’t always cry when they are turned on. It is possible to be curious, like, or nervous, or scared, and it is normal for them to not respond when they are turned on. Crying at boot is actually judging the maximum amount of electrical stimulation to which he appears to respond, which is also a subjective report that, combined with the neurological response, will be able to give the child a more appropriate program.