'Our minds can be hijacked': the tech insiders who fear a smartphone dystopia.
Goes deeper than what the article talks about, see:
The Mind Has No Firewall
TIMOTHY L. THOMAS
From Parameters, Spring 1998, pp. 84-92.
“It is completely clear that the state which is first to create such weapons will achieve incomparable superiority.” – Major I. Chernishev, Russian army
https://ssi.armywarcollege.edu/pubs/parameters/articles/98spring/thomas.htm
Then see some of the advances since the publication of that Army War College article here:
https://earthpulse.com/mind_brain_effects/
The technique of interest is “Forced Frequency Following”.
~~DISCUSSION~~