Discussion of ECoG Transmission Frequency Band and Path Loss Analysis

For a long time, people have carried out various research on human body communication (HBC), mainly focusing on the medical field, which is used in pathological diagnosis, physiological monitoring, disease prevention, disease treatment, disability assistance and numerous other aspects. The research of body area network (BAN) combined with brain machine interface (BMI) has become a fresh focus. In this paper, we use electrocorticography (ECoG), which has more stable transmission waveform and additional information, to build a human head model. We study the optimal frequency band distribution for wireless signal transmission from the cerebral cortex to the scalp surface in the 10MHz–10GHz band. Moreover, we analyze the relationship between the path loss and the communication distance in the optimal frequency band and provide a model relationship between them.