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Clumps of human brain cells in a dish can learn to play Pong faster than an AI

newscientist.com

31–40 of 109 posts

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#31
post #5

Paywalled. From an earlier article in Forbes: > Using real neurons avoids several other difficulties that software-based neural networks have. For instance, to get artificial neural networks to start learning well, their programmers usually have to engage in a laborious process of manually adjusting the initial coefficients, or weights, that will be applied to each type of data point the network processes. Another ch…

> The other main advantage is low power consumption.

As someone worried about our climate, I'm very curious about that actually. Is it more efficient to feed neurons biological food (from an energy perspective, since that food needs to be grown on land somewhere and takes up solar energy, it needs water that comes from clouds which were created by evaporation, etc.) than it is to use low-CO2 energy sources (solar, wind, nuclear, hydro, wave, whatever) and power a computer with that?

E.g. electric motors are very efficient compared to combustion, but it's only effective if you get electricity from a non-combustion source or else you might as well use a combustion engine in the vehicle itself. I kind of assumed it's the same for computers, that they efficiently calculate things compared to biology, but I never really thought about it. I'm curious how energy-intensive biological computers are (discounting any R&D that I assume is currently still a big part of the equation).

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#32
post #14

huh now it's playing badly... wait, it's morse code! _._ .. ._.. ._.. __ .

Ah, the sentient something communicating a "kill me" message. That reminds me of a scene from a movie, but I can't remember which one it was.

https://youtu.be/WM8bTdBs-cw?t=306

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#33
I cant find the part about "faster than AI" in the research paper. It's very difficult to compare. Do you use a single computer or a cluster? Do you compare wall clock time, or energy consumption, or weigh of the processor, or ...?

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#34
post #8

How do they do it in practice? How do the neurons know when they succeed / fail?

From my very limited understanding, feedback is done by releasing chemicals. Not sure if hormone is the proper word but that's what comes to mind. Perhaps someone else here knows more about it.

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#37
post #19
post #14

Earlier quoted context omitted.

Ah, the sentient something communicating a "kill me" message. That reminds me of a scene from a movie, but I can't remember which one it was.

More than likely Johnny Got His Gun, although The Fly or Predator could apply.

I thought of "Johnny Got His Gun" too. That's the film they use the footage from in the video of Metallica's song "One".

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#39
post #5

Paywalled. From an earlier article in Forbes: > Using real neurons avoids several other difficulties that software-based neural networks have. For instance, to get artificial neural networks to start learning well, their programmers usually have to engage in a laborious process of manually adjusting the initial coefficients, or weights, that will be applied to each type of data point the network processes. Another ch…

There is a company working on biologically inspired neural chips called Rain Neuromorphics. https://rain.ai

Re: Clumps of human brain cells in a dish can learn to play Pong faster than an AI

#40

Everyone seems to be joking about this, but doesn’t this result indicate that human neurones have a better learning algorithm than the ones we are using to train AI? It’s interesting that this is evident in even small clumps of human brain tissue. Really interested to know how this might work.

I'd be very surprised if biological brains couldn't do better than fancy gradient descent, which is what the current standard seems to be for artificial neuronal networks.
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