many of the body's processes and drives, such as waking and sleeping, hunger, and sexual desire. It had a strong effect on emotions, serving as the control center for pleasure, pain, aggression, and fear. In addition, the hypothalamus regulated the production of dopamine and beta-endorphins, both strong opioids that could produce a natural high.
A simple, constant signal sent to the implant could stimulate the generation of a steady stream of powerful opiates. Morden didn't behave like an addict, though; if the Shadows were doing something to affect his moods, it was very sophisticated and very subtle. He seemed simply to relish his job, and to take great satisfaction in success.
Galen couldn't imagine how emotions could be manipulated so facilely; the mechanisms that generated them were still not well understood. Such subtle control was far beyond the mages. Perhaps, though, not beyond the Shadows. With sufficient expertise, they might keep their servant happy, might keep him smiling. Or if their servant displeased them, they might take away that smile.
Galen couldn't believe it. Morden was an enthusiastic, willing agent of the Shadows. He had orchestrated the slaughter of millions of Narns, the extermination of the mages, and seemed eager for more. He enjoyed the game of manipulation and control as much as the Shadows.
But what if he himself was controlled?
If Elric was correct, Morden had joined the Shadows to gain revenge against his family's killers. That might account for Morden's loyalty to his "associates," but it failed to explain Morden's enthusiasm for the job.
Galen had thought him a selfish opportunist. His old job as an archaeologist in EarthForce's New Technologies Division required secrecy, deceit, and ruthless determination. Morden was