>>11311286Robert G Malech
1974 - Apparatus and method for remotely monitoring and altering brain waves
https://patents.google.com/patent/US3951134A/1976 - Brain wave activity monitoring device - has electromagnetic energy input and retransmission system with electronic evaluator
https://patents.google.com/patent/FR2339384A1/enHendricus G Loos
Background:
https://discover.dtic.mil/results/?q=hendricus%20loos1993 - Pulse variability in electric field manipulation of nervous systems
https://patents.google.com/patent/US6167304A/1995 - Magnetic excitation of sensory resonances
https://patents.google.com/patent/US5935054A1995 - Thermal excitation of sensory resonances
https://patents.google.com/patent/US5800481A1997 - Subliminal acoustic manipulation of nervous systems
https://patents.google.com/patent/US6017302A1997 - Method and apparatus for manipulating nervous systems
https://patents.google.com/patent/US5782874A/en1998 - Electric fringe field generator for manipulating nervous systems
https://patents.google.com/patent/US6081744A/1998 - Pulsative manipulation of nervous systems
https://patents.google.com/patent/US6091994A1999 - Remote magnetic manipulation of nervous systems
https://patents.google.com/patent/US6238333B12001 - Nervous system manipulation by electromagnetic fields from monitors
https://patents.google.com/patent/US6506148Bruce F Katz
2000 - Method and device for producing a desired brain state
https://patents.google.com/patent/US6488617B1/en2005 - Brain state recognition system
https://patents.google.com/patent/US7403815B2/en