Repostan cause was the last post in the bread but relevant
ALL major human emotions have a frequency range - they have been mapped. It is possible with (now old) tech to induce these emotional states in people, even not in direct physical contact, not in line of sight
Murderous rage
Sexual frenzy
Panic
Hysteria
Hysterical laughter
Somnambulence
Apathy
This is not new tech
"The mind has no firewall" Lt. (Col?) Timothy L. Thompson, US Army war college magazine, parameters ~ 1988
See also Dr. Nick Begich who hs documented this tech (not classified