Subdermal is a lot easier than implanting in other compartments, e.g., intracranial. For example, hormonal birth control exists as an implant.
But, there’s fascinating research into how the brain rejects implanted electrodes, e.g., neuralink. Lots of work has been done developing materials that are less likely to be rejected by the brain and the brain’s immune system. For example, electrodes can be coated in chemicals to make them less harsh to the body, and flexible materials can be used.
Subdermal is a lot easier than implanting in other compartments, e.g., intracranial. For example, hormonal birth control exists as an implant.
But, there’s fascinating research into how the brain rejects implanted electrodes, e.g., neuralink. Lots of work has been done developing materials that are less likely to be rejected by the brain and the brain’s immune system. For example, electrodes can be coated in chemicals to make them less harsh to the body, and flexible materials can be used.