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The four components of a closed-loop, neural interface system: (1) a recording array that extracts neural signals, (2) a decoding algorithm that translates these neural signals into a set of command signals, (3)an output device that is controlled by these command signals, and (4) sensory feedback in the form of vision and potentially other sensory modalities. Transparent head image is courtesy of ©iStockphoto.com/Kiyoshi Takahase Segundo.
