The goal of these experiments was to find a way to bring out confessions or wipe the subjects mind clean and create “a robot agent”.Many other drugs were used, including heroin, temazepam, mescaline, psilocybin, cannabis, and alcohol. One experiment that was carried out in a prison had CIA agents inject prisoners in one arm with a barbiturate (a type of anaesthetic used to depress the central nervous system) and with amphetamine into the other. When the prison population began to fall asleep due to the barbiturate they would administer the amphetamine. The prisoners began babbling incoherently but occasionally gave usual answers to questions.Hypnosis and experiments involving flashing lights and loud music were also experimented with. Little hard evidence is available to know what really happened during these experiments due to the then CIA Director, Richard Helms, ordering that all MKUltra files be destroyed before a proper investigation could be carried out.
