Kai
New
Surely the brain must be reasonably robust against very weak external signals - otherwise we could never think at all!
David, there's actually no need for the brain to be robust against ultraweak fields because they are far too weak to intervene remotely from their location (by remotely, I mean even within a few centimeters, no matter what others here may claim). If you bump heads with someone, the strength of the magnetic field is approximately the same as that from the engine of a lone car being driven on a road somewhere approximately one and a half miles away. When you process that for a moment, you begin to see the fringe science dimensions of the idea that this could have a structured physiological influence.
The thing I don't think you are realising is that if you sum signals from 10^6 neurons (say), those neurons will not be carrying identical information, but making their own individual contribution - so when you sum them you don't end up with anything that could be decoded.
More seriously, if one takes this notion even at face value, the themes present in firing groups would not even be "readable" because only those loci and directional planes tangential with the outer edge of the skull would radiate their influence a few milimeters into space.
As I said above, if you really take your concept of brain to brain electromagnetic communication seriously, are you putting in research grants to explore it, or thinking about experimental setups to demonstrate your theory?
I can't imagine this idea getting research grants or funding even, except perhaps from an eccentric investor of the kind that back places like "HeartMath." You can ask yourself a much simpler question: is there any non-fringe empirical science existing anywhere on this planet showing a meaningful intervention effect by one brain on a remote brain by means of conventional field effects? When you ask the right questions... ;)
I feel as though there is a special class of scientific 'theories' that are invented solely to debunk ψ research in general. These are theories that are never used in any other context, or even written up for peer review!
That is definitely true.