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US-6506148-B2 is a patent for a method to manipulate the nervous system by using electromagnetic fields from pulsed images on a TV or computer monitor:
Inventor: Hendricus G Loos (US)
Priority date: June 1, 2001
Filing date: June 1, 2001
Publication date: January 14, 2003
Grant date: January 14, 2003
The patent describes how some computer monitors and TV tubes emit electromagnetic fields when displaying pulsed images. These fields can be strong enough to excite sensory resonances and manipulate a subject's nervous system. The effects of this manipulation can include:
Ptosis of the eyelids
Relaxation
Drowsiness
Pressure on the lower edge of the brow
Seeing moving patterns with the eyes closed
A tonic smile
A tense stomach
Sudden loose stool
Sexual excitement
The precise frequency used and the skin area to which the field is applied determine the effects.