Microwave/radiowave monitoring: brain signal modulates carrier (modulation of phase and amplitude)
Modulation of the carrier by brain signal with the purpose of transmission is a mixing process represented by the term heterodyning.
Process facilitated by:
1. Interference of beams to generate a carrier with a frequency that provides optimal modulation
2. Use of frequencies for which the human head acts as electromagnetic cavity resonator (450 MHz range).
[Hypothesis] Remote neural monitoring based on magnetic resonance in the Earth's magnetic field and biocorrelation
Remote fMRI (BOLD contrast) and remote MR current density imaging (MRCDI) for monitoring electric activity based on the proton and electron resonance signal
Brain and body electromagnetism represent an electric/magnetic flux of small intensity which is difficult to measure remotely. However, upon a certain excitation event
and specifically spin excitation in the frame of magnetic resonance, it is possible to generate a measurable electric/magnetic flux.
How do we compensate for the low static magnetic field strength of the Earth's magnetic field?