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evantthompson's profile
Evan Thompson
Evan Thompson
Evan Thompson
@evantthompson

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Evan Thompson

@evantthompson

Writer, UBC Philosophy, Assoc Member Asian Studies & Psych Depts. Married to @beckettodd

Vancouver
evanthompson.me
Joined January 2015

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    1. 𖤐 🔥Bryce 🔥𖤐‏ @NeuroYogacara 1 May 2019
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      Replying to @NeuroYogacara @evantthompson and

      And the more I talk to you, and think through your work, the more i find myself pulled toward a story that's far more complicated than most sketches of computational explanations!

      1 reply 0 retweets 4 likes
    2. Esther Mondragón‏ @twitemp1 1 May 2019
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      Replying to @NeuroYogacara @evantthompson and

      Hmm... Playing devil’s advocate: I doubt that we can ever achieve a complete and accurate mapping as @evantthompson suggest, and, if we do, I am not so sure that it would constitute a “true” explanation, perhaps because I ignore what the latter means. >

      2 replies 0 retweets 3 likes
    3. Evan Thompson‏ @evantthompson 1 May 2019
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      Replying to @twitemp1 @PsychScientists and

      Fair points. But I didn't mean "true explanation;" I meant something that's truly an explanation. I don't think the mapping needs to be complete, but it does need to specify what the neural code actually is; otherwise it's "as-if" talk that hasn't been sufficiently grounded

      1 reply 0 retweets 4 likes
    4. Esther Mondragón‏ @twitemp1 1 May 2019
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      Replying to @evantthompson @PsychScientists and

      Well, I disagree. I'm happy assuming different explanatory levels. To use a silly simile, we do not need to appeal to subatomic particles to account for the dynamics of a pendulum.

      1 reply 0 retweets 3 likes
    5. Evan Thompson‏ @evantthompson 1 May 2019
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      Replying to @twitemp1 @PsychScientists and

      I'm not arguing against distinct explanatory levels. I'm saying computation is a heuristic without a specification of how its implemented.

      1 reply 0 retweets 4 likes
    6. Esther Mondragón‏ @twitemp1 1 May 2019
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      Replying to @evantthompson @PsychScientists and

      Would you consider that a model such as Rescorla-Wagner requires specifying neural implementation?

      1 reply 0 retweets 3 likes
    7. Evan Thompson‏ @evantthompson 1 May 2019
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      Replying to @twitemp1 @PsychScientists and

      That depends on what question we're asking, but my understanding is that there are data relating neural firing patterns to the R-W model, in which case the model has an explanatory grip.

      1 reply 0 retweets 4 likes
    8. Esther Mondragón‏ @twitemp1 1 May 2019
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      Replying to @evantthompson @PsychScientists and

      There is neural data relating to TD (a real-time instantiation of RW), but the explanatory scope of the model is, IMO, independent of it. It rests in its predictive power. >

      1 reply 0 retweets 2 likes
    9. Esther Mondragón‏ @twitemp1 1 May 2019
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      Replying to @twitemp1 @evantthompson and

      Finding a correlation between a model and brain activity further strengthens it but it does not alter its value as a behavioural model.

      2 replies 0 retweets 2 likes
    10. Jelle  ⬅️1.5m ➡️ 🤳‏ @theblub 1 May 2019
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      Replying to @twitemp1 @evantthompson and

      But then the question becomes what sort of thing do you want to predict? I could make a experiment proving that mice embody a rule that says “if hungry cat, then run”. Model makes accurate predictions. But would be silly. So what is the grainsize / how deep to go?

      1 reply 0 retweets 0 likes
      Evan Thompson‏ @evantthompson 1 May 2019
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      Replying to @theblub @twitemp1 and

      Here's an example to voice my concern: "Bayesian brain" suggests the brain is really a Bayseian machine. That's a stronger claim from saying it can be usefully modeled using Bayesian tools. I've no issue with the latter; the former needs a lot more support.

      11:02 AM - 1 May 2019
      • 6 Likes
      • Esther Mondragón Stephen 'antivirus' Hill 𖤐🔥Bryce🔥𖤐 Jasper van den Herik Jelle ⬅️1.5m➡️🤳
      1 reply 0 retweets 6 likes
        1. New conversation
        2. Esther Mondragón‏ @twitemp1 1 May 2019
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          Replying to @evantthompson @theblub and

          I do agree! I am not saying that a cognitive/behavioural model equals to any of their possible physical instantiations. Not in the least! In fact I am claiming that its value is independent of it.

          1 reply 0 retweets 5 likes
        3. 𖤐 🔥Bryce 🔥𖤐‏ @NeuroYogacara 1 May 2019
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          Replying to @twitemp1 @evantthompson and

          Yes. This. And what’s super interesting is that the difficulties faced by linking dopamine transients to TD don’t undercut the value of the updating model. Perhaps *both* because R-W is insufficient, and it’s not implemented by tonic+physic spiking in the basal ganglia!

          1 reply 0 retweets 1 like
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