Russian army Major I. Chernishev, writing in the military journal Orienteer in February 1997, asserted that "psy" weapons are under development all over the globe. Specific types of weapons noted by Chernishev (not all of which have prototypes) were:
Ultrasound emanations, which one institute claims to have developed.
Devices using ultrasound emanations are supposedly capable
of carrying out bloodless internal operations without leaving a mark on the skin.
They can also, according to Chernishev, be used to kill.
Deutsches Forum