All organs in the human body play a crucial role in maintaining vital life functions. Among them, the brain holds a particularly significant position and, due to its complex structure, has always been the subject of extensive scientific research. The formation of thoughts, the experience and identification of emotions, and the ability to translate these into actions are among the fundamental functions of the brain. The synchronization of these processes is made possible by neurotransmitters, which enable communication and information transfer between neurons (nerve cells).
This article aims to examine the effects of the MK-Ultra Project—initiated in the mid-1940s with the objective of controlling the human mind—on neurotransmitters.
The Terrifying Experiment That Controlled The Mind
Research conducted on the human mind has always attracted considerable attention in the fields of psychology and medicine. However, the MK-Ultra Project, which aimed to control the human mind, stands out as one of the most striking studies conducted to date. The project was rooted in the Cold War era and sought to develop mind-control techniques that could be used against enemies. In order to achieve this, it was necessary to manipulate brain functions, which directly connects the project to neurotransmitters.
What Is The MK-Ultra Project?
The MK-Ultra Project was a covert operation designed and conducted by the CIA between 1953 and 1973. It consisted of a series of mind-control experiments developed primarily for use against enemies during the Cold War. Most of the subjects were unaware of the true purpose of the experiments and were exposed to intense psychedelic drugs, physical and psychological abuse, sleep deprivation, and malnutrition, among many other experimental procedures.
Neurotransmitters
Neurotransmitters are chemical messengers responsible for controlling numerous functions of the nervous system and transmitting signals to target cells. Some examples of neurotransmitters include acetylcholine, dopamine, serotonin, GABA, L-DOPA, taurine, histamine, noradrenaline, and glycine.
The Effects Of The MK-Ultra Project On Brain Functions
During the experiments, LSD (lysergic acid diethylamide) was frequently used. LSD is a powerful hallucinogen with a high potential for dependency. It is a psychedelic substance capable of influencing an individual’s emotions, altering thought patterns, time perception, and emotional states. In addition to affecting neurotransmitters such as serotonin, LSD also acts on dopamine receptors.
Some of its physical effects include pupil dilation, increased body temperature, accelerated heart rate, elevated blood pressure, sweating, loss of appetite, and insomnia. Furthermore, it may cause distortions in the perception of shape and size, movement, depth, time, sound, and touch. Acute anxiety and depression may also occur following LSD use.
During the experiments, subjects were observed to experience effects beyond those commonly documented. Instances in which certain foreign celebrities appeared to stare blankly into space for extended periods, lose their balance, or experience speech disturbances during live broadcasts while cameras were recording may suggest that such experiments continued even after the 1970s.
While these experiments were considered advantageous by those who developed the project, they have gone down in history as a horrific assault on the human mind.


