Metagenic pulse
From Memory Alpha, the free Star Trek reference
A metagenic pulse is a type of energy that stimulates Borg implants.
In 2374, when Seven of Nine false recalled being assaulted by Kovin under the Doctor's memory reconstruction therapy, Kovin's associate Scharn used a metagenic pulse to extend Seven's assimilation tubules for the purpose of collecting nanoprobes. (VOY: "Retrospect")
