Probably not. To get input from the brain, you need to place a sensor near it. But this device doesn’t get inserted into the brain, it sits in the scalp.

There are plenty of non-invasive brain reading technologies though, like EEG and near-infrared spectroscopy. They’re just big and bulky with low resolution.

The motor cortex is located in about the same spot in everyone, to my knowledge - I don’t know of any reported exceptions. The pre-central gyrus. Within, motor neurons are organized in specific regions that control specific body parts. Again, I don’t know of any reported exceptions - my understanding is everyone’s motor cortex has the same organization. It’s known as the cortical homunculus. https://en.wikipedia.org/wiki/Cortical_homunculus#Motor_homunculus%3Fwprov=sfla1

So by reading output from a small group of neurons, yes, you could control a prosthetic limb. It’s been done a few times, actually! But, you typically need more precision than comes from an EEG electrode, so all the examples I can think of are using invasive electrodes.

In fact, the sensory system of the brain has a very similar organization - along the postcentral gyrus, and the same stereotyped organization within. If you could stimulate the correct region of the sensory cortex, you could create a prosthetic that allows you to feel.

There are some more technical limitations though - there’s different types of sensation (e.g., pain, temperature, proprioception (position in space), texture, etc.) that are controlled by different receptors in skin and have different wires connecting to the brain. You’d have to be very careful about what you stimulate. And, any implant that delivers electricity to the brain, with our current technology, has a limited lifespan due to the brain’s immune system rejecting the implant (this is the aspect I studied).

Oh, cool, more BCI. I published in this field.

My only concern is how tenable it would be to deploy a bunch of these sensors. EEGs get coverage of the entire brain (surface, not a lot of deep brain activity). Would anyone be willing to wear hundreds, if not thousands, of micro-needles in their scalp?

If it meant controlling a prosthetic, probably. But general commercial devices - probably not.

x 1000. Between the time I started and finished grad school, Chat GPT had just come out. The difference in students I TA’d at the beginning and end of my career is mind melting. Some of this has to do with COVID losses, though.

But we shouldn’t just call out the students. There are professors who are writing fucking grants and papers with it. Can it be done well? Yes. But the number of games talking about Vegetative Electron Microscopy, or introductions whose first sentence reads “As a language model, I do not have opinions about the history of particle models,” or completely non sensical graphics generated by spicy photoshop, is baffling.

Some days it held like LLMs are going to burn down the world. I have a hard time being optimistic about them, but even the ancient Greeks complained about writing. It just feels different this time, ya know?

ETA: Just as much of the onus is on grant reviewers and journal editors for uncritically accepting slop into their publications and awarding money to poorly written grants.

You’ll never believe how it effects sales tax (if you’re not buying from a second hand store).

https://en.wikipedia.org/wiki/Immunotherapy?wprov=sfla1

Immunotherapy is crazy.

Prion diseases would be harder because things circulating in your blood don’t always enter your brain (thanks to your astrocytes, which help protect your neurons). But if you can get the right cells to produce the right protein, you can do a lot of amazing things.

Well, we don’t yet have evidence that it’s bad for our bodies, per se. That’s step one to getting things to change, IMO. So far we just have theories. Personally, I subscribe to the theory that microplastics are linked to changes in immune cell function/inflammation, which in turn leads to changes in the brain amd leads to some types of neurodegeneratove disorders like Alzheimer’s. Again, a theory, not any conclusive proof. It could be the case that microplastics aren’t causing damage.

But, with the technology we have now, I can imagine some solutions. Most promising, in my opinion, would be something akin to an mRNA vaccine. Introduce the mRNA to your body to produce a protein that targets plastic and leads to its removal from the body, almost like an antibody.

But with the NIH in the United States now targeting mRNA vaccine research for “critical review” as part of Trump’s agenda, the technology may not be long for this part of the world… even though it has revolutionized our ability to quickly, safely, and inexpensively produce vaccines against disease.

Scientist here. Microplastics in the body are too ingrained in our bodies for bloodletting to do much of anything. They’re even found in fetuses.

The good news (?) is we don’t know enough about microplastics to conclusively say they’re horrible for our health. The bad news is, I’d bet a lot of money that they are.

Oh hey, another BCI startup. This one seems promising. I published in the field so I’m happy to answer questions.

I did some digging over my morning coffee and couldn’t find any more details about the AI features. If I had to guess they might have a machine learning algorithm which helps decode brain signals. The company website seemed more geared towards creating a platform for EEG research and didn’t mention the AI at all? I may have missed it in my quick review.

I’m less familiar with visual evoked potentials, but they should be a lot easier to read than other neural signals. This is a big plus because it means the device tolerates more noise. I’m curious if it’s reliable enough to function in the “real world” - some EEGs are so sensitive that they even pick up electrical noise from wires in the walls. You can post process some, but not all, of the noise from your environment.

I’ve felt the real BCI future is with functional near infrared devices but I’m yet to see a breakthrough into commercial devices.

Standard? Not really. But there’s a tutorial here: https://github.com/miykael/3dprintyourbrain

Happy to answer some questions if you have issues

Interesting question. It depends. I linked Ev Fedorenko’s Interesting Brain Project at MIT up above, they’re doing a deep dive into questions like those.

Broadly speaking, if you’re born with these anatomical anomalies, you’ll be more or less normal. The article mentions the person in question had an IQ of 70, so that’s lower than normal, but not intellectually impaired.

But acquired Brain damage almost always leads to impediments. Strokes and repeated concussions, physical injury, etc.

The brain is “plastic” when you’re young, we like to say. That is, it’s pliable and can mold into whatever shape it needs to in order to adapt to your environment. That plasticity disappears once you get older. It’s how kids can learn language effortlessly - when you’re born, you have the most neurons and synapses you’ll ever have in your life. You’ll keep the same neurons (unless you have a degenerative disorder or kill them with drugs), make new synapses as you learn, but broadly speaking as you grow up you prune synapses that aren’t helpful.

This is also why kids can undergo massive resection surgeries (or in the olden days, severing of the corpus callosum) and grow up more or less normal.

In the US getting an MRI for “no reason” can be very expensive. Probably wouldn’t have been covered by insurance.

Ev Fedorenko has done some of the best research in brain science, in my opinion. There’s no better rabbit hole than her research!

$$$

Eh, college is hard and so was his sport. Sure, it’s not an exhaustive battery of testing but I’m confident to say he’s a normal dude.

That’s the short of it - but we passed all brain data to a university affiliated neurologist for review. We also allowed participants to take a copy of their brain data if they wanted. I’ve got a CD of my own brain kicking around somewhere, and I even helped a few people 3D print their brains.

But, anything that I said about the participants brain opened me up to liability. What if I said their brain looked OK and there was a tumor? Or vice versa? The University felt I could be sued, so we were trained to not speak about their brain.

Well it’s not quite water, it’s cerebrospinal fluid and it plays a lot of important roles in waste clearance, immune protection, protection from concussion, and more.

Nope, not related to any disease I’ve ever seen. The best guess i have is fetal alcohol syndrome but it isn’t a perfect match. It’s just weird knowing he has a very odd shaped brain. And there’s a lot of unknowns surrounding it.

What if he sees another doctor and they mention it to him? Would he be upset I didn’t say anything? What if it is linked to some disease and I didn’t tell him, and he gets sick?

What if it’s hereditary and his kid has it, does it explain the motor delays? The premature birth? The problems they have with him sleeping?

Just a lot of unknowns.

We’ve actually seen a handful of them in the community. MIT has an “Interesting Brain Project” https://news.mit.edu/2023/studies-of-unusual-brains-reveal-insights-brain-organization-function-0221.

If you’re born that way, odds are you’ll be more or less normal. It’s amazing to see how resilient the human brain is.

In fact, one woman in China was born without a cerebellum. She wasn’t exactly normal per se, but she was alive and more or less healthy. Even though the cerebellum is smaller by volume it has about the same number of neurons as the cerebrum. So she just had half a brain. https://www.newscientist.com/article/mg22329861-900-woman-of-24-found-to-have-no-cerebellum-in-her-brain/

I ran a lot of MRIs for my PhD. I saw somewhere around 100-200 different brains. About 10% of them had abnormalities. Of all the technicians, scientists, and (non-clinical) doctors I spoke with, we all agreed this was a very high rate of discovery. All my friends graduated without seeing anything weird. My advisor liked to joke that I was cursed. Eventually I stopped inviting my friends to do my experiments because I didn’t want to deal with the risk of them having an abnormality - thanks to some combination of HIPAA and medical liability laws, I wasn’t allowed to say anything about it, even if asked point blank. I didn’t like that very much.

I made one exception, as a friend of mine came in for a study and I saw a golf ball sized cyst in his sinus. He had it surgically removed and he told me he stopped snoring the next day. It felt good to make a difference for him.

But, I saw one brain similar to the one documented here. It belongs to one of my close friends. It was harrowing. Entire left hemisphere was malformed, the ventricles were way too big and the cortex was way too thin. But the right side of his brain was underdeveloped, maybe the size of a tennis ball.

The weirdest part, he is 100% normal. In fact, he competed at a high level of college athletics. Normal Cognition, normal motor function, great sense of humor, and a very caring person. Now he has a great job, wife and kid, and we hang out often. But I can’t bring myself to say anything, and every time I see his son I wonder about his brain.