Neurogenics is a field of science that deals with monitoring or manipulating the energy involved with transmitting information throughout a lifeform's brain, nervous system and its various chemicals and neurons. (TNG: "Ethics"; DS9: "Life Support")

Dr. Toby Russell, specializing in neurogenetics research, worked on a genetronic replicator which she claimed would be a breakthrough in neurogenics. (TNG: "Ethics")

The term "neurogenic" was first used in TNG: "Ethics" and later used in episodes like DS9: "Life Support". The above definition is based on the various applications of the term throughout later Star Trek series, and is in general agreement with current-day medical use of the word.