Apart from being the name of a vegetable, Artichoke or the Artichoke Project also is the name of a former CIA Mind Control Program. The name was only used for two years. Till 1951, it was called Project Bluebird. In 1953 it was succeeded by Project MkUltra.
(Other interesting Mind Control Programs are MkDelta and Pandora).
This is what the Wikipedia has to say about it:
Project ARTICHOKE (also referred to as Operation ARTICHOKE) was a Central Intelligence Agency (CIA) project that researched interrogation methods.
Preceded by Project BLUEBIRD, ARTICHOKE officially arose on August 20, 1951, and was operated by the CIA's Office of Scientific Intelligence. The primary goal of Project ARTICHOKE was to determine whether a person could be involuntarily made to perform an act of attempted assassination. The project also studied hypnosis, forced morphine addiction (and subsequent forced withdrawal) and the use of other chemicals including LSD, to produce amnesia and other vulnerable states in subjects.
Project ARTICHOKE led to Project MKUltra, which began in 1953.