This page contains information regarding Star Trek: Lower Decks, and thus may contain spoilers.
"Hot damn, you're heroic."
In the field of cybernetics, a cyborg (short for cybernetic organism), or cybernetic lifeform, was a biological lifeform who had been cybernetically augmented. This augmentation, which might extend physical abilities beyond normal limitations, might be achieved through installation of bionic or cybernetic components. Cybernetic lifeforms could not survive without their organic components. (Star Trek: First Contact)
Sometime before 2256, Lieutenant Commander Airiam was extensively augmented with artificial parts following a shuttle accident which claimed the life of her husband Stephen while coming back from their honeymoon. (DIS: "Project Daedalus")
In 2327, Jean-Luc Picard received an artificial heart after he was stabbed by a Nausicaan during a bar brawl. (TNG: "Tapestry") When Kestra Troi-Riker pointed a bow and arrow at Picard following his arrival on Nepenthe in 2399, Picard said that since his artificial heart was made of solid duritanium, it would probably be better if she aimed it at his head instead of his chest. (PIC: "Nepenthe")
At some point in 2380, Ensign Sam Rutherford of the USS Cerritos forcibly received a cybernetic implant from two mysterious individuals that had a variety of functions, such as a tactical computer and a recording device. (LD: "Second Contact", "Envoys", "Cupid's Errant Arrow", "First First Contact") The implant was believed to be of Vulcan design, and initially attempted to suppress Rutherford's emotions against his will, though this issue was seemingly resolved. (LD: "Second Contact") The implant's programming could be updated with a manual restart, which he preferred to perform before going to sleep. During a covert mission in 2380, Rutherford's implant was rebooted while he was awake, causing him to black out. Upon regaining consciousness, Rutherford surmised that-based on the evidence he gathered-his implant took control of his body. (LD: "Veritas") Rutherford lost his implant later that same year, when Lieutenant Shaxs ripped it off his head in order to get the ensign to safety. It was later discovered that removing Rutherford's implant caused him to lose a portion of his long-term memory, including his memories of Ensign D'Vana Tendi. (LD: "No Small Parts") By 2381, Rutherford's implant had been replaced, though his memory was still damaged. (LD: "Strange Energies") Later that year, Rutherford's implant began displaying an error message that impeded his vision. Lieutenant Commander Andy Billups determined that Rutherford had been receiving the error message because his implant's data storage capacity was at its limit. Rutherford admitted that he had been saving three backup copies of each of his memories containing Ensign Tendi, as he did not want to forget her again. However, he ultimately decided to delete his backup memories in order to make new ones, though he briefly experienced a flashback with a mysterious figure saying that "he [would] think [the implant] was elective." (LD: "First First Contact")