In reference to the patent: US3951134
The patent claims in simplest terms that by broadcasting two radio signals into the brain, that the brain's own radio signals can be modulated onto the combined signals and then picked up by receivers for processing, analysis, and other actions. If any radio signal can be modulated by another radio signal, then all radio signals are modulated by all radio signals (untrue). The patent makes no mention of this, and fails to provide a means to detect and filter out all other radio signals other than the brain's which would additionally be present, and neither does it specify that the process must be conducted within a faraday cage in order to isolate the process from all other ambient radio signals. In point of fact, radio signals do not modulate one another; the process as described is nonsense. Modulation is achieved by directly embedding a signal through electronic circuitry prior to broadcast, as in AM/FM radio (AM means Amplitude Modulation, FM means Frequency Modulation), and decoded in like means by radio receivers. Were this patent true and workable, AM/FM radio would be incapable of producing useful sound.