Placeholder Image

字幕列表 影片播放

  • Hello. I am interested in the process by which I could download everything from a brain and

  • upload it into a brain inside the body of Ryan Reynolds so I could have lots of cool

  • fun. Is that possible? Asking for a friend.

  • Hey brainiacs, Trace here for DNews! Over the centuries, we've compared our brain to

  • clocks, telephone switchboards, and now (of course) computers; but really the brain is

  • none of these things. It's its own thing. In the upcoming movie Self/Less, a dying man

  • uses crazy cool technology to transfer his consciousness into a younger man's body. One

  • would assume each brain has similar programming for how to run a heart, manage an immune system

  • and so on -- so we just need the memory data from the person we're downloading, but if

  • I wanted to download all the data from one brain, and upload it into another brain

  • would that even be possible? Stephen Hawking thinks so, and futuruist Ray Kurzweil believes

  • we're only 40 years to awaySo, what's blocking us from starting our first brain

  • backups?

  • Firstly, we'd have to read from the source brain, scientists will have to learn how we

  • store those memories. Neurons don't simply store one bit of information like in a computer.

  • Each neuron can create 1,000 connections with those around them, and unlike machines aren't

  • only on or off -- they have other states too. Luckily, humans are pretty obsessed with mind-reading.

  • Researchers at the University of California Berkeley scanned the brains of people while

  • they watched videos -- and using only the brain scans, a computer was able to determine

  • what those brains were looking at. Using an fMRI scan to follow blood through the brain,

  • using three dimensional representations of the scanned areas called voxels, the researchers

  • trained the computer to piece together what the brain was looking at. Using tech like

  • this, scientists have scanned brains of players of Counterstrike, and see when they want to

  • turn left or right, but if their character is killed, emotional response overwhelms the

  • scan. Emotions are far too complex to readyet.

  • Next, we'll have to write to the new brain. When WE do that, we're biochemically modifying

  • neurons and their connections to other neurons. There are trillions of these synaptic connections

  • in each person's head. A study in Nature explored exactly how this process works using mice

  • with cells that had been genetically modified to activate when hit with laser light -- this

  • is called called optogenetics. With this method, researchers were able to demonstrate how memories

  • are written, erased and reactivated, and then able to "implant" a false memory into another

  • genetically modified mouse! It's REALLY incredible, but we can't yet do this with any mouse off

  • the streetyet.

  • So let's assume we get to a point where we can read and write to brains; we need to copy

  • that information. But, the human brain isn't a finite storage system like a hard drive;

  • there could be a lot of space in there. Estimates vary from 2.5 petabytes -- about a million

  • gigabytes -- down to a few measly gigabytes. If you wanted to copy 2.5 petabytes over say,

  • a USB 3.0 connection, it would have to run continuously for more than 80 DAYS; and even

  • over Thunderbolt 3 it would take almost a week!

  • The biggest issue in consciousness transfer, is going to be mapping the brain accurately.

  • Computer scientists from giant companies, major universities, and world governments

  • have been working on mapping and translating the brain network to a computer network for

  • decades. But, thoughts don't live on a single neuron, nor are they processed in a single

  • place, but rather as a patterned network of brain cells picking up the information and

  • processing it. We're at the fundamental level of brain mapping already, we've got a while

  • to go until we can map all the connections and states of all our individual neurons in

  • real time, but just imagine where we'll be with a few more decades behind us, considering

  • where we are already... Billions of dollars are being spent on this, and according to

  • top minds in the field, it's only a matter of time until we learn to emulate a brain

  • in a computer, and map a consciousness on top of it.

  • Based on what we know now, maybe we aren't too far from a brain copying future... Self/Less

  • hits theaters on July 10th, and will star Ben Kingsley and Ryan Reynolds. In this sci-fi

  • tale, an extremely wealthy man, dying from cancer, undergoes a radical medical procedure

  • that transfers his consciousness into the body of a healthy young man. But all is not

  • as it seems when he starts to uncover the mystery of the body's origin and the organization

  • that will kill to protect its cause.

  • If you could, would you extend your life with a consciousness transfer?

Hello. I am interested in the process by which I could download everything from a brain and

字幕與單字

單字即點即查 點擊單字可以查詢單字解釋

B1 中級

我們能不能把自己的意識上傳到電腦上? (Could We Upload Our Consciousness To A Computer?)

  • 463 23
    Jack 發佈於 2021 年 01 月 14 日
影片單字