Carver was among the landing party that beamed down to inspect the secondplanet of the Taurean system in 2269, offering to take tricorder readings of the planet's surface. Carver was later affected by the glandular secretion of the Taurean females, known for controlling the male mind. This caused Carver to be drained of his "life force," causing him to age at a rate of ten years per day. Carver and the landing party were eventually recovered by an all-female Enterprise security detachment led by Uhura. He and the others were returned to their previous ages by use of their molecular pattern stored in the transporter system. (TAS: "The Lorelei Signal")
Since Carver was younger than Kirk, Spock, or McCoy, Alan Dean Foster, in the prose version of "The Lorelei Signal" that he wrote into Star Trek Log 2, showed the character to have aged faster than any of the other three men. The same adaptation also refers to Carver as an ensign, despite the fact that the animated depiction of the character shows him wearing the rank insignia of a lieutenant.