The Ligonian transporter effect
Heglenian shift was the term for a technological attribute of the transporters used by the people of Ligon II.
In 2364, Data noted that the Ligonian transporters were similar to early Starfleet efforts, but they used the Heglenian shift to convert energy and matter. At the time, Federation technology was unable to trace the source of transporters utilizing this attribute. (TNG: "Code of Honor")