We do have magnetite in our brains.

Maybe there is an interface between the human parasympathetic nervous complex and unconsciously detected anomalies within Earth’s magnetism.

I remember a study from years ago which established that the human brain can “see” the Northward Direction due to a very subtle lightening/washout effect that is added to our perception of visual stimuli when “facing” North. It isn’t that our eyes become more sensitive to light- it’s a “filter” added as an overlay to the data our biological image-processing components feed us. Can’t find it and don’t have time to look…but IIRC it’s out there somewhere. I know newer studies with EEG equipment reading brainwaves in test subjects have established that our magnetic “sense” is a scientific fact.

There is a lot more to magnetism than cardinal directions. It is a variable, “living and breathing” force on our planet.

I’m also fairly certain that quantum entanglement- and perhaps a concentration of entangled materials within the brain itself- all help to explain the “gifts” and “sight” that some people truly do possess.