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Bliss Chapman

👤 Person
888 total appearances

Appearances Over Time

Podcast Appearances

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

that discovered that there's this thing called motor tuning curve. So what are motor tuning curves? It's the fact that there are neurons in the motor cortex of mammals, including humans, that have a preferential direction that causes them to fire.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

So what that means is there are set of neurons that would increase their spiking activities when you're thinking about moving to the left, right, up, down. and any of those vectors. And based on that, you could start to think, well, if you can identify those essential eigenvectors, you can do a lot.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

So what that means is there are set of neurons that would increase their spiking activities when you're thinking about moving to the left, right, up, down. and any of those vectors. And based on that, you could start to think, well, if you can identify those essential eigenvectors, you can do a lot.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

So what that means is there are set of neurons that would increase their spiking activities when you're thinking about moving to the left, right, up, down. and any of those vectors. And based on that, you could start to think, well, if you can identify those essential eigenvectors, you can do a lot.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

And you can actually use that information for actually decoding someone's intended movement from the cortex. So that was a very, very seminal kind of paper that showed that there is some sort of code that you can extract, especially in the motor cortex.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

And you can actually use that information for actually decoding someone's intended movement from the cortex. So that was a very, very seminal kind of paper that showed that there is some sort of code that you can extract, especially in the motor cortex.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

And you can actually use that information for actually decoding someone's intended movement from the cortex. So that was a very, very seminal kind of paper that showed that there is some sort of code that you can extract, especially in the motor cortex.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

And if you measure the electrical signal from the brain that you could actually figure out what the intention was. Correct. Yeah, not only electrical signals, but electrical signals from the right set of neurons that give you these preferential direction.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

And if you measure the electrical signal from the brain that you could actually figure out what the intention was. Correct. Yeah, not only electrical signals, but electrical signals from the right set of neurons that give you these preferential direction.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

And if you measure the electrical signal from the brain that you could actually figure out what the intention was. Correct. Yeah, not only electrical signals, but electrical signals from the right set of neurons that give you these preferential direction.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

That answer fundamentally depends on what you want to do with it, right? There's actually an incredible amount of stuff that you can do with EEG and electrocorticograph, ECOG, which actually doesn't penetrate the cortical layer or parenchyma, but you place a set of electrodes on the surface of the brain. So the thing that I'm personally very interested in is just actually understanding

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

That answer fundamentally depends on what you want to do with it, right? There's actually an incredible amount of stuff that you can do with EEG and electrocorticograph, ECOG, which actually doesn't penetrate the cortical layer or parenchyma, but you place a set of electrodes on the surface of the brain. So the thing that I'm personally very interested in is just actually understanding

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

That answer fundamentally depends on what you want to do with it, right? There's actually an incredible amount of stuff that you can do with EEG and electrocorticograph, ECOG, which actually doesn't penetrate the cortical layer or parenchyma, but you place a set of electrodes on the surface of the brain. So the thing that I'm personally very interested in is just actually understanding

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

and being able to just really tap into the high resolution, high fidelity, understanding of the activities that are happening at the local level. And, you know, we can get into biophysics, but just to kind of step back to kind of, use analogy because analogy here can be useful. Sometimes it's a little bit difficult to think about electricity.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

and being able to just really tap into the high resolution, high fidelity, understanding of the activities that are happening at the local level. And, you know, we can get into biophysics, but just to kind of step back to kind of, use analogy because analogy here can be useful. Sometimes it's a little bit difficult to think about electricity.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

and being able to just really tap into the high resolution, high fidelity, understanding of the activities that are happening at the local level. And, you know, we can get into biophysics, but just to kind of step back to kind of, use analogy because analogy here can be useful. Sometimes it's a little bit difficult to think about electricity.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

At the end of the day, we're doing electrical recording that's mediated by ionic currents, movements of these charged particles, which is really, really hard for most people to think about. But turns out a lot of the activities that are happening in the brain and the frequency band with which that's happening is actually very, very similar to sound waves and our normal conversation audible range.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

At the end of the day, we're doing electrical recording that's mediated by ionic currents, movements of these charged particles, which is really, really hard for most people to think about. But turns out a lot of the activities that are happening in the brain and the frequency band with which that's happening is actually very, very similar to sound waves and our normal conversation audible range.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

At the end of the day, we're doing electrical recording that's mediated by ionic currents, movements of these charged particles, which is really, really hard for most people to think about. But turns out a lot of the activities that are happening in the brain and the frequency band with which that's happening is actually very, very similar to sound waves and our normal conversation audible range.

Lex Fridman Podcast
#438 – Elon Musk: Neuralink and the Future of Humanity

So the analogy that typically is used in the field is, if you have a football stadium, There's a game going on. If you stand outside the stadium, you maybe get a sense of how the game is going based on the cheers and the boos of the home crowd, whether the team is winning or not. But you have absolutely no idea what the score is.