Hmm this leads me to recall a bunch of ancient pseudoscientific sounding beliefs and see whether or not they might be plausibly explained by this mechanism:

* Is it possible for humans to get a vague impression of other humans' thoughts via this mechanism? Not via body language, but "telepathy" (it'd obviously only work over very short ranges). If it is possible, maybe it is what some people supposedly feel as "auras"

* Some animals have a preference for sleeping direction in alignment with magnetic pole, are some sleeping directions "healthier" than others for humans?

That aside, I didn't follow the part about how this is an answer to the hard problem of consciousness. Why couldn't the brain achieve global summarization via another mechanism, and why does having this "global summarization" result in qualia?

This reminds me of the study about dog poop being aligned to magnetic north/south.[0]

It seems a bit silly, but I suspect that more of our life may be effected by biomagnetism than we yet realize.

[0] https://link.springer.com/article/10.1186/1742-9994-10-80

Well how far do these fields propagate and do you need to read them from different directions to make sense of them? Think you’d want to answer those questions first. The sensors from the study are very close and all around the head. Also demonstrate there is some phenomenon to explain in the first place.

If this were true wouldn’t fMRI machines cause either loss of consciousness or extreme hallucinations?

Contrast this with trans-cranial magnetic stimulation and claims this can induce the feeling of religiosity in people: you may believe in god, because your ferromagnetic particles align to believe in god in the right magnetic field..

(not really.. but still. the thing about induced states of mind by TCMS is true)

I’ve long thought it would be unsurprising if we eventually found evidence of certain kinds of telepathy. It would just be too damn useful, and tuning up one exquisitely complex magneto-electro-chemical instrument in close proximity to another similar one seems like a good way to at least get resonance. Who knows?