Conversation

Nervous system manipulation by electromagnetic fields from monitors
https://patents.google.com/patent/US6506148B2/en

Effects have been observed in humans in response to stimulation of the skin with electromagnetic fields pulsed with frequencies near ½ Hz or 2.4 Hz. Many computer monitors, when displaying pulsed images, emit pulsed electromagnetic fields of sufficient amplitudes to cause such excitation. It is therefore possible to manipulate the nervous system of a subject by pulsing images displayed on a monitor.