I am amazed at how many ppl resist this basic fact! Folks: you may believe ANNs miss critical biological details, cool, that's a legit position to take. But why pretend that ANNs are not an abstraction of neural processing? That is simply not a tenable position, frankly.
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Replying to @tyrell_turing @neuro_data and
started a new thread because my jaw dropped at the hubris of this remark.
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Replying to @GaryMarcus @neuro_data and
It's not hubris, man. You may not think ANNs are a *good* model. But, neurons are well approximated in their firing rate by a linear-non-linear model. See here: https://www.sciencedirect.com/science/article/pii/S0896627318307372 … Given this, it is ridiculous to claim that ANNs are not an abstraction of neural processing.
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Replying to @tyrell_turing @neuro_data and
mere approximation doesn’t mean you have really captured what that component is, let alone how system as a whole works. NOBODY really understands how you get from neural nonlinearities to cognition without clear account of that, rest is straw-grasping
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Replying to @GaryMarcus @neuro_data and
You're trying to have a debate with me that I'm not interested in, bc I am not taking the position you think I am. I am not claiming that I can say with certainty that ANNs are a *good* model of the brain. I am claiming that they capture *some* aspects of neural processing.
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Replying to @tyrell_turing @neuro_data and
it may turn out that we are fundamentally wrong in our early 21st century thinking about the brain, and eg that most of the action is at the dendrites and that we have misunderstood what neurons (and other constituents of the brain) do. see comment re in vitro vs in vivo
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Replying to @GaryMarcus @tyrell_turing and
But I agree that we may massively underestimate the computational power of dendrites.
@IlennaJ and@aha_momentum in my lab are going crazy about that idea ;)2 replies 0 retweets 8 likes -
Replying to @KordingLab @GaryMarcus and
@GaryMarcus I think you're not understanding@tyrell_turing . I saw another post today that said "all neurology is inferior to ANN models," and THAT point of view is genuinely worth ridiculing.1 reply 0 retweets 2 likes -
Replying to @atbolsh @KordingLab and
only thing i was ridiculing (via parallel structure) was his certainty in the face of the unknown.
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Replying to @GaryMarcus @atbolsh and
But my certainty is not the one which you were ridiculing. You kept trying to explain to me that ANNs might not capture the reality of the brain, and are not adequate models. But all I said was that they were an abstraction that captures some aspects of neural processing.
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My point, again, is that we know so little about the overall nature of neural processing that is premature to say much more than X looks a little like Y that might do Z.
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Replying to @tyrell_turing @atbolsh and
as long you stress the *might* we may not disagree...
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