This is extremely interesting and basically boils down to the following neurological observation: Anything (molecules, electric charge, magnetic fields etc) th

This is extremely interesting and basically boils down to the following neurological observation: Anything (molecules, electric charge, magnetic fields etc) that is originally created by brain activity and itself detectable by other parts of the brain - what ever those are (mostly neurons, axons or dendrites I suppose) was factored in during the evolution of the brain and is henceforth utilized as a signal. That's why the brain is so incredibly complex and the classical neural network model doesn't cut it. In other terms if X is systematically caused by A and is then affecting some B then that X will at some point serve as a signal factored into the neural processing and is no longer just noise! This happens evolutionarily over millions of years as well as dynamically in context of neural plasticity to some extent. The same concept is true for anything in the body - which is why the separation of the body into modules / organs is problematic. But the effect is much more potent in the brain due to the high density of signalling and processing.