Wednesday, November 3, 2010

찾아야 하는 페이퍼는 관심 밖이고 난 지금 뭐하니

In l'Ultime Secret (a novel by Bernard Werber; 베르나르 베르베르의 <뇌>) a physically paralyzed man has the dream of controlling the world with the his one intact body part--the brain. Back in the days, I thought it was creative of Werber to dare think that the human brain can act upon the physical world with no help from external limbs. And I was somehow persuaded that we are pretty close to that day...even without much knowledge in neuroscience.



A paper published in Nature says that patients with severe epilepsy "have used mind control to change images on a video screen. In other words, we can purposefully strengthen or suppress an idea/image to deliver what's in our mind to the external environment.
"생각만으로 세상을 바꾼다"는건 비유적인 표현만이 아닌 세상이 벌써 온걸까?

First of all, the field of brain-machine interface is still overwhelming.
But we've already made a man move a computer cursor to remote-control the robotic arm with his neural activation (a chip was transplanted in his motor cortex).

And today's biomed seminar was on designing a genome sequence the way clients want. Designing a DNA set. Tailoring certain characteristics into a Life.
What's next? Where are we walking into?

Here is the link to the Nature News article: http://www.nature.com/news/2010/101027/full/news.2010.568.html

(I have the paper, pdf.)

and below is the video that explains the procedure. Warning: content contains images of the real brain (juicy!)




my question,though: but if you attempt to suppress ideas, you'll notice that it's harder to do so; conversely, you will end up thinking more about it. Wouldn't this interfere with your purposeful "move"?

4 comments:

  1. We will have "Gattaca."

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  2. 언니~ can u email me the pdf please?
    It sounds cool but I'm not totally sure how this was made possible. My understanding of memory was that it was not stored in a particular place, but spread throughout the cortex and a particular memory is only activated by the integration of various 'bits of info' with hippocampal activation. So I'm not sure how 'Marilyn Munro' memory could have been projected on to the screen using a single neuron (i.e. how they selectively identified & activated that one neuron?)
    Would be keen to read more about it :)

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  3. Flora,
    participants are not retrieving any memory here, but rather, this study is interested in measuring how attentive we are to that picture. The more we focus on activating one image/idea, the stronger the neurons will fire, and as a consequence, computer will be able to detect what image we prefer another by measuring the brain activity (i.e., EEG). What this paper ultimately says is that we can deliver our messages by consciously controlling how much "brain energy" we allocate to one stimuli.

    And of course, you are more than welcome to read the paper itself:) Check your email!

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  4. and yes, we will soon see Gattaca.

    ...and Josh Hartnett.

    ReplyDelete