*4.2.6. iEMG controlled prosthetic device*

iEMG is capable of providing accurate EMG data to the control system. Use of implantable myoelectric sensor (IMS) would result in nullifying the problem of multiple-component EMGs, an inborn problem of surface EMG recording, as well as the nullifying the considerable amount of environmental effects caused for the changes in regular sEMG signal supply. Here the IMS receives commands and power from an external telemetry controller [8]. It drives a coil attached to the prosthetic socket as shown in Fig. 21. EMG data and digital information transmit between the implants and the telemetry controller forming a magnetic link through the coil. The data is then converted into analog form at the controller and can be used to control the prosthetic device. When the results from iEMG are compared with sEMG for the same user, iEMG results show a drastic improvement in providing the same motion of the natural hand. Even though iEMG is capable of providing better signals, it is an invasive process and may cause discomfort to the user. Therefore, a hybrid control method, EMG coupled with EEG would result in providing a better control for the prosthetic device. Further, it will not cause discomfort to the user.
