Posted on 03/18/2019 1:26:25 PM PDT by DUMBGRUNT
During the experiment, 26 participants each sat with their eyes closed in a dark, quiet chamber lined with electrical coils. These coils manipulated the magnetic field inside the chamber such that it remained the same strength as Earths natural field but could be pointed in any direction. Participants wore an EEG cap that recorded the electrical activity of their brains while the surrounding magnetic field rotated in various directions.
...Joseph Kirschvink, a neurobiologist and geophysicist at Caltech, and colleagues studied alpha waves to determine whether the brain reacts to changes in magnetic field direction. Alpha waves generally dominate EEG readings while a person is sitting idle but fade when someone receives sensory input, like a sound or touch.
(Excerpt) Read more at sciencenews.org ...
I can only detect Higgs bosons and tau neutrinos.
There is water beneath the surface darn near everywhere. Only question is how far.
Do the Higgs things hurt?
Do you glow in the dark?
Tiny magnetic particles I’m the brain may line up with the earth’s magnetic field. It even happens with molten rock. It’s how we know the earth’s magnetic field has flipped many times in its history. Also that continents have drifted around the surface.
as long as you remember that the sun rises in the East and sets in the West..
That can be difficult in triple canopy during the monsoon season.
I’m = IN
I can feel north some places but not others. I live in the mountains now and can’t feel direction an all here.
Im always drawing a compass in the air with my finger to remember the cardinal directions. N, S, E, W. People probably think I am making the sign of the cross all the time.
Presumably, they would have the proper controls in place to differentiate between the brain wave changes and the changes in the sensors that result from the redirected magnetic field.
In any case, the fact that there are some measurable changes in the brain electrical activity does not mean the person senses direction through interaction of brain electrical activity and the earths magnetic field. As someone pointed out in another post, MRIs produce strong magnetic fields; the patient does not feel them.
You been there too...
That's terrible. Maybe you should post a bunch of arrows throughout the yard pointing the way to the house.
Ain't no monsoon here,
Ain't no monsoon here,
There might be monsoon in your left ear but there ain't no monsoon here............
LOL
My dogs did no such thing.
“So folks in an MRI, with a field 15,000 times stronger than Earths field (65000 nanoTesla) should definitely sense that”
You would think so. I had one yesterday, and all I felt was claustrophobia.
I first visited Dallas at night, making an assumption on directional orientation. When I moved to the city, it was daylight and my intuited directionality was incorrect. It took me years to get straight on directions, if I ever did.
Parts of Kentucky and West Virginia and many others, you may not see much or the sky.
Up in the U P, the monsoon is white and comes in small chunks!
https://www.neatorama.com/pet/2014/01/01/Dogs-Tend-to-Pee-and-Poop-along-a-North-South-Axis/
Our Australian Shepherds make it about 75% of the time.
But they are way smarter than I am, so I never know with them.
It’s not just the brain that can ‘sense’ the Earth’s magnetic field. It’s the whole body. The answer to why is the same answer as to why Blood Cells are RED.
DG! I’ll see your Science news, and raise you one Physics Today! (for the record I sleep better West-East!)
https://physicstoday.scitation.org/do/10.1063/PT.6.1.20180830a/full/
Mapping magnetite in the human brain
The magnetic nanoparticles are concentrated primarily in the cerebellum and brain stem, among the oldest parts of the organ.
In 1992 researchers identified the presence of magnetitea permanently magnetic form of iron oxidein human brain tissue. Iron in the body was no surprise. It is commonly found in ferritin, an intracellular protein common to several organisms, and the magnetite was thought to have formed biogenically, with some possibly originating in ferritin. But the presence of magnetite in the brain could be more than incidental. Various studies have shown that brain cells respond to external magnetic fields. Theres also a disturbing link to neurodegenerative disease: Evidence exists of elevated levels of magnetite in brain tissue from Alzheimers disease patients. (More at link)
I had an MRI in in November its messed everything up.
Haven’t been able to find my way back to the Liquor store since! (Which may be just as well since they told me not to drink!)
“You would think so. I had one yesterday, and all I felt was claustrophobia.”
The MRI should have been part of the experiment protocol. If changes in field direction from Earth-strength Helmholtz coils causes a measurable change in alpha brain activity, then repeat the experiment with the subject outside the MRI then inside. The stronger the field the better, there are MRIs out there with 3T magnets.
In my humble opinion the whole experiment should be scrapped for poor design.
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