This thesis investigates the application of body-coupled communication (BCC) for microscale implants inside the human brain. Brain-Computer Interface (BCI) platforms have received a lot of attention in the last decades, demonstrating to be an effective means of restoring sensory and motor functions (e.g. sight, movement, and cognitive abilities), in addition to their utility in neuroscience studies. Developing technologies to enable distributed massive neural interfaces is an active area of research to enhance the efficiency and efficacy of BCI systems. To this end, both wired solutions (e.g. Neuralink project), and wireless networks of micro-scale implants are explored. Most wireless solutions utilize far-field electromagnetic radiation, i.e.