You know what a counterexample is? It's an idea that makes another idea impossible to accept; the following may be a counterexample:
"The Cemi field theory is not without critics though for its relatively radical propositions and ideas surrounding one of man’s greatest mysteries. One of the questions that constantly arises is, if consciousness is dependent on an endogenous electrical field, why can’t a powerful exogenous electrical field such as electrical cables, shape our thoughts and neural functions? "https://psych-neuro.com/2015/04/23/explaining-consciousness-using-the-cemi-field-theory/
Some people have to work around strong magnetic fields. So if what we have is a magnetic field, why doesn't it get scrambled?
"McFadden acknowledges that his theory—which he calls the "cemi field theory"—is far from proven but he argues that it is certainly a legitimate line of scientific inquiry. His article underwent peer review before publication. In fact, Baars is on the editorial board of the journal that published it.
The field theories of consciousness do not appear to have been as widely discussed as other quantum consciousness theories, such as those of Penrose, Stapp or Bohm. However, David Chalmers argues that quantum theories of consciousness suffer from the same weakness as more conventional theories. Just as he argues that there is no particular reason why particular macroscopic physical features in the brain should give rise to consciousness, he also thinks that there is no particular reason why a particular quantum feature, such as the EM field in the brain, should give rise to consciousness either. Despite the existence of transcranial magnetic stimulation with medical purposes, Y. H. Sohn, A. Kaelin-Lang and M. Hallett have denied it, and later Jeffrey Gray states in his book Consciousness: Creeping up on the Hard Problem, that tests looking for the influence of electromagnetic fields on brain function have been universally negative in their result[dubious – discuss]. However, a number of studies have found clear neural effects from EM stimulation."https://en.wikipedia.org/wiki/Electromagnetic_theories_of_consciousness
This is unsettled science, and it's going to take a lot of work before we settle on a particular theory. For now, it's still a mystery.