1.5.2 Programming Follow-up Following surgical implantation of the device and an adequate healing period, the implants will be activated (usually 4 to 6 weeks after surgery) and programmed. Thereafter, prior to the 4-month post-operative evaluation, three additional programming follow-up sessions will be scheduled at 2 weeks, 1 month, and 2 months as it is not unusual for threshold and comfort levels to change during the initial postactivation period. The follow-up sessions will allow the participant 's T- and C-levels to be checked as well as any programming adjustments to be made based on the participant's initial experience with the device. Electrical impedance measures also will be obtained.