The brain makes a different analogue radio-frequency pattern for each different word. Those analogue radio-frequency pattern are associated with each specific word.
A certain type of radio-signal acts to cancel the analogue radio-frequency pattern associated with some specific word thus causing suppression of memory. By suppressing of memory then people can be caused to act in a manner contradictory to their intent[1].
Another radio-signal can cancel the signal of consciousness of the brain thus causing a type of electronic anesthesia.
The device which transmits these radio-signal is in orbit.
[1]As discussed elsewhere in this blog then radio-signal can also be used for directing the movement of muscle.
/Nathan