Cybernetic

cybernetic, cybernetics, n. 1. an interdisciplinary study of the structure and regulatory systems. 2. In more modern and popular culture, narrowed down to the study of the interface of the interaction of technology such as cyberware and Artificial Intelligence with the human condition. 3. adj. pertaining to cyberware. Ex: Watch out for that guy's arm, it's cyberneticly enhanced."
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Addendum: Cybernetics used to be an esoteric field studying how systems worked, both physically and socially. It was only within the advent of popular fiction that it has generally been thought of just the studies of interaction of human systems with a direct interface of technology. This can generally be traced back to the first use of the term cyborg ('Cybernetic organism) in academia in the early '60s that was adapted for science fiction staples such as Doctor Who and The Six Million Dollar Man, to where the term cybernetics were though to mean just the technology.
Addendum #2: One of the most famous academics in the modern field of cybernetics is Kevin Warwick, the Professor of Cybernetics at the University of Reading in the UK. He is most famous for his Project Cyborg, in which over time he has implanted several small devices in order to see the effects his nervous system would have on interfacing with them.