Cranial Implant
A device that is installed into the brain.
Cardassian Cranial Implant
Highly classified Cardassian biotechnological device used by the Obsidian Order. The implants, which were placed into the skulls of the order's operatives, were designed to stimulate the pleasure centers of the brain. This would release large quantities of endorphins, making the operative impervious to pain in the event the operative were tortured by an enemy.
Borg Cranial Implant
In 2374, Captain Kathryn Janeway accessed Seven of Nine's cranial implant with a microfilament to activate her Borg bioelectric field, enabling her to escape a cell on the USS Dauntless. (VOY: "Hope and Fear")
One of the Borg drone's cranial implants was an interplexing beacon. In 2375, Seven of Nine received a set of phase corrections through this cranial implant during USS Voyager's quantum slipstream flight, which collapsed the slipstream and saved Voyager from destruction. The message had been sent by a future Harry Kim, from an alternate timeline. (VOY: "Timeless")