In this paper is argued that additionally to the natural ambient ELF electromagnetic fields (magnetic oscillations, Schumann Resonance, etc.) an additional ambient ELF magnetic field is generated by the endogenous EM consciousness mechanisms surrounding humans. They are proposed that exists fields with intensities in the 1–10 nT range at distances of a few meters from the source.
It also summarizes some investigations that without doubt confirm sensitivity of biosystems to fields of that intensity (in this website there are proofs of sensitivity to even mode weaker intensities).
It must be said that there are studies that show that isolation from Schumann Resonance frequencies affects numerous biological parameters , and for example, the physical condition of early Astronauts deteriorated severely whilst in Outer Space, away from the Schumann Resonance. The problem was solved by introducing a "Schumann Simulator" into all space shuttles, a magnetic pulse generator mimicking the Earth's frequency.
There are various theories about mechanism that is behind this sensitivity, that, for example, can involve non-linear resonant absorption of ULF/ELF oscillating signals into systems that uses natural ion oscillation signals in the same frequency range . But also it must be taken into account the similarities of these electromagnetic fields with those originated in the brain 
Last modified on 11-Jul-16