Systems and methods for providing an electrical interface to a body are provided. In one embodiment, an implantable module is disclosed, comprising: an implantable electrode array, implantable within a body and capable of providing a plurality of communication channels for communicating electrical signals detected in a body； an amplifier circuit for processing electrical signals received from the electrode array； a wireless transceiver for sending and receiving telemetry data between the amplifier circuit and a wireless receiver located outside of the body； and a sealed enclosure that houses the amplifier circuit and the wireless transmitter and is biocompatible with surrounding tissue, the enclosure having a window that is transparent to a wireless medium used by the wireless transceiver. In another embodiment, a wireless transceiver and amplifier is detachably coupled to a transcutaneous attachment device, and the implantable electrode array is electrically coupled to the interface board via the transcutaneous attachment device.
