A system and method for conducting closed loop deep brain stimulation on an individual, and more specifically, for receiving local field potential neural signals, encoding and filtering the signals into the logarithmic domain, processing the signals, and determining optimal stimulation parameters for deep brain stimulation based on the processed neural signals. The system and method may also include an RF-DC converter such that the system may be powered in whole or in part based on radio frequency signals. The system and method may also include an RF transceiver such that the system may transmit data wirelessly to an external receiver, or may receive stimulation parameters wirelessly from an external transceiver.