Just the fact that your brain 'sums' those signals somewhere, to let you hear that interference frequency, has always fascinated me.

Do you have a link to the pmeumatic headphones study you mention?

Is there any actual science behind binaural beats? They do nothing in my experience…

Mirror sold separately.

Not necessarily - I think it works like Daniel Kahneman's System 1 and System 2. Your conscious system is System 2 - when it's not working correctly, you just fall back to System 1.

Independently, since the whole idea relies on resonance, it may be the case that an fMRI doesn't actually interfere with the "stochastic resonance" mechanic quite like TMS (transcranial magnetic simulation) seems to.

If you model the brain this way, dementia looks like a clear breakdown of System 2, which is an interesting thought experiment even if the mechanics aren't perfect: https://1393.xyz/writing/alzheimers-is-the-symptom-not-the-p...

I believe in dead salmon, they do.

This paper starts to go downhill around "The easier-than-expected problem of consciousness".

The Meta paper [1] is much more useful. They claim to be reading out what someone is seeing, in a rather approximate way. The sensing is improving. One project was able to sense magnetic fields at 13 points at 1KHZ using a custom helmet fitted with sensors.[2] The technology is still in the early stages, but they got rid of the high vacuum and cyrogenics needed for SQUID sensors. Progress.

This currently has fewer data points than functional MRI, but more bandwith. fMRI, after all, is measuring blood flow. It's like trying to figure out what an IC is doing by watching its infra-red heat emissions. "Look, the FPU is working hard now."

That paper is a few years old. What's been going on since?

[1] https://ai.meta.com/blog/brain-ai-image-decoding-meg-magneto...

[2] https://pmc.ncbi.nlm.nih.gov/articles/PMC6063354/

There was a comment years/decades ago on slashdot about someone walking under a malfunctioning ceiling-hung security CRT TV, and feeling like they were hit on the head when they walked under it. The assumption was that the TV had an abnormally large magnetic field (or the person was particularly sensitive).

I’ve tried to replicate it, but my chances have become slim-to-none with CRTs going out of fashion.

It does sound pretty fantastic. What parts in particular to you find invalid, and why?

> It's proven that humans can just barely sense large-scale magnetic fields

It's tentatively proven that humans react to large magnetic fields. The reaction can come from simple interference, without ever being processed as a sense.

But there's so much more bullshit. That an MEG measurement was decoded only means that the brain produces a magnetic field that correlates with the information it is processing. So there's no Faraday cage in our head. Great. But the brain already knows what it is doing. All that information is there, very fast and reliable. Why should it try to decode its much less detailed and very weak magnetic field then? Where are the sensors? MEG needs super-conduction to work, and doesn't work when there's any disturbance. In the institute where I worked, it was forbidden to use carts (for moving equipment or coffee or whatever) on all floors in the corner where the MEG was located when there was an experiment going on, because it would disturb measurements. A few crystals aren't going to overcome those problems.

> The easier-than-expected problem of consciousness

OMFG. There's really no point in reading this.

FWIW that’s debunked

Maybe there is a correlation between religion and the proximity to power lines.

+1. The article itself hides it well, but the draft paper linked at the end is clearly 100% AIGC.

And the paper is clearly the ancestor to the article itself, based on the date (5dec -> 11dec)

I agree. It’s an inversion of the usual pattern: AI-generated “thoughts”, written up by a human.

I’m surprised this made it to the front page of HN. I think AI tools are making it easier to create increasingly plausible-sounding bullshit, and gradually overwhelming the defenses of this community.

That's exactly what I read out of it. I should yave stopped midway.

If you don’t want the EEG to capture your brainwaves you can wear a tin foil hat to lead the magnetic field astray.

> * 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"

If any of it was possible, it would be easily scientifically provable by very simple experiments. The fact that it hasn't been proven while people would have very high motivations to prove it, suggests it's very probably not happening.

> If it is possible, maybe it is what some people supposedly feel as "auras"

For what it's worth, I have a disorder that causes me to see "auras" around people quite often. The nature of the disorder is that my brain can't filter out its own sensory noise properly, giving rise to a lot of visual artefacts that non-disordered brains filter out. These range from 'TV static' to stuff that's not a million miles away from diffusion model artefacts, but the auras around people I see pretty much all the time especially against plain backgrounds. It's not very well-known or studied but fMRI studies have recently implicated the same serotonin receptor psychedelics target, and it's also linked to migraine.

I think this disorder being more prevalent than expected would be a good explanation for auras. It was once thought to be very rare, but many people who have it aren't actually affected enough to seek out a diagnosis. It wouldn't be an unreasonable source for images like auras, saints' haloes, and other things like that since they're just an ordinary part of vision for me. I also think it somewhat vindicates Aldous Huxley's thoughts on the subject.

I really like the idea of electrical fields being somehow important for consciousness, and it's not something I'd rule out off the bat. I just think that disorders of perception are a better explanation for auras and similar phenomena.

> If it is possible, maybe it is what some people supposedly feel as "auras"

I've always held two complementary beliefs regarding auras and similar senses:

1. It's plausible that some humans can sense subtle information about things like emotional states or reactions in other humans using non standard sensing mechanisms (so maybe electric fields rather than sight, for example).

2. I'm very certain that for overwhelmingly most humans who claim they can see auras, it's one of: bullshit, fakery, self delusion, wishful thinking, charlatanism, a scam.

“Wouldn't” is being used in the logical-conditional sense, not in the sense of willingness, requesting, nor opinion.

It's literally “What's the reason that the machinery of the brain doesn't use this mechanism, given this proof that the effect could in principle be used?”. A similar question can be made for quantum mechanical interference in the brain (which to be clear I feel is adequately answered by “the brain is a wildly inappropriate vehicle for harnessing interference effects).

That’s because that’s obviously mind writing not mind reading.

See this pubpeer discussion about critiques of plausibility of the papers conclusions: https://pubpeer.com/publications/155C1B85C0680A558D4431D059A...

>may be effected by biomagnetism

Bioelectricity too, which is just now starting to get properly researched (see Michael Levin's stuff).

This is cited