When you receive your cochlear implants, they will need to be programmed to your specifications and needs. This is known as mapping, and is used to optimize your perception of sound. An audiologist will use a computer program to measure your response to a series of audio tones, utilizing the data to adjust threshold and comfort levels, establish appropriate volume levels, and set stimulation rates. Mapping is crucial to achieving optimum performance from your cochlear implants. As you become comfortable with cochlear implants your hearing will become more sensitive and effective. Follow-up appointments are necessary for fine-tuning settings and making additional adjustments.