Chapter or Chatter was the name of the first known post war Mind Control program in the USA. It was started in 1947 by the DIA/Navy Intelligence.
(Some sources mention 'Chapter' while most sources refer to this project as the Chatter Project, as in 'mind chatter.')
There had been rumors that the Soviet Union had been successful with things like truth serums during interrogations. So, the US started its own experiments. The program was discontinued in 1953.