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o_guest's profile
Olivia Guest | Ολίβια Γκεστ
Olivia Guest | Ολίβια Γκεστ
Olivia Guest | Ολίβια Γκεστ
@o_guest

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Olivia Guest | Ολίβια Γκεστ

@o_guest

• goth gremlin • computational cognitive/neuroscience modeling • geek & techish Cypriot • plant aficionada • came up with #bropenscience • http://neuroplausible.com  •

Τότεναμ, Λονδίνο & Cyprus
olivia.science
Joined October 2015

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    1. Carsen Stringer‏ @computingnature Jun 22
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      Can we find these “magical” combinations by looking at the brain while it’s looking at our images? We used a microscope to record the activity of ~20,000 neurons simultaneously. Here is all of them from one session in random colors.pic.twitter.com/iaNkGRUZCD

      1 reply 7 retweets 35 likes
      Show this thread
    2. Carsen Stringer‏ @computingnature Jun 22
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      We used linear regression to find weights for each neuron that combine their activities into “super-neurons”.pic.twitter.com/Rxepy0oB69

      3 replies 7 retweets 43 likes
      Show this thread
    3. Carsen Stringer‏ @computingnature Jun 22
      • Report Tweet

      These super-neurons were much less noisy than single neurons. In fact, the super-neurons could tell the difference between 45 and 46 degrees on 95% of the test trials. Can you?pic.twitter.com/wuueSaanHH

      4 replies 6 retweets 55 likes
      Show this thread
    4. Carsen Stringer‏ @computingnature Jun 22
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      Imagine asking a mouse to distinguish such small differences... Our colleagues in @BenucciLab actually tried! The mouse could only tell apart angle differences of 29 degrees, which was about 100 times worse than the neurons.pic.twitter.com/MeXXVeiWma

      1 reply 4 retweets 35 likes
      Show this thread
    5. Carsen Stringer‏ @computingnature Jun 22
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      Even for humans it’s difficult, but I bet you can see the difference if I make the pictures into a movie.pic.twitter.com/S7nfZEpGbP

      3 replies 2 retweets 35 likes
      Show this thread
    6. Carsen Stringer‏ @computingnature Jun 22
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      We conclude that mice have a lot of information in their brains, which are 1000x smaller than ours.pic.twitter.com/xVxz0TW5cB

      2 replies 2 retweets 31 likes
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    7. Carsen Stringer‏ @computingnature Jun 22
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      They can’t communicate this information to us, but that does not mean they don’t use it, for example as a first step to another computation.pic.twitter.com/9xxfVQ7nPW

      1 reply 3 retweets 37 likes
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    8. Carsen Stringer‏ @computingnature Jun 22
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      We hope to find out in the future what these other computations might be.

      2 replies 3 retweets 24 likes
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    9. Carsen Stringer‏ @computingnature Jun 22
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      We publicly shared the data and code from this paper if anyone wants to dig further. data:https://figshare.com/articles/Recordings_of_20_000_neurons_from_V1_in_response_to_oriented_stimuli/8279387 … code:https://github.com/MouseLand/stringer-et-al-2019 …

      3 replies 16 retweets 133 likes
      Show this thread
    10. Carsen Stringer‏ @computingnature Jun 22
      • Report Tweet

      The End.

      9 replies 1 retweet 71 likes
      Show this thread
      Olivia Guest | Ολίβια Γκεστ‏ @o_guest Jun 23
      • Report Tweet
      Replying to @computingnature

      Wow. Cool! This really relates to my preprint in terms a theoretical take on what might be happening — the idea of levels of representation. At different levels/layers we see different statistics of the input being encoded, see more:https://dx.doi.org/10.1101/626374 

      10:23 AM - 23 Jun 2019
      • 7 Retweets
      • 9 Likes
      • Rosaura  Brisuela Brian Gordon KordingLab Carsen Stringer Lynn Chiu Kai Ueltzhöffer Jonathan Reardon Iris van Rooij Your Personal Neurocrackpot
      2 replies 7 retweets 9 likes
        1. Carsen Stringer‏ @computingnature Jun 23
          • Report Tweet
          Replying to @o_guest

          Thanks for this it looks really interesting, going to read it in more detail soon!

          0 replies 0 retweets 1 like
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        1. New conversation
        2. Your Personal Neurocrackpot‏ @neuropoetic Jun 23
          • Report Tweet
          Replying to @o_guest @computingnature

          All roads lead to the multilevel multiscale architectures and ecosystems

          1 reply 0 retweets 1 like
        3. Olivia Guest | Ολίβια Γκεστ‏ @o_guest Jun 23
          • Report Tweet
          Replying to @neuropoetic @computingnature

          Yeah, haha. Also... It's such a cool finding @computingnature!

          1 reply 0 retweets 2 likes
        4. Olivia Guest | Ολίβια Γκεστ‏ @o_guest Jun 23
          • Report Tweet
          Replying to @o_guest @neuropoetic @computingnature

          I need to think/read about this more, but I really would love to see how the kinds of models we present in my preprint would relate/cope with the kinds of data you talk about in your preprint, Carsen! 🐭

          1 reply 0 retweets 2 likes
        5. Your Personal Neurocrackpot‏ @neuropoetic Jun 23
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          Replying to @o_guest @computingnature

          Your Personal Neurocrackpot Retweeted Your Personal Neurocrackpot

          Can I have your thoughts on this please? Low level repertoires that allow for fluidity or continuity in potential (a subset that can approximately constitute a smooth-ish topology or manifold) and higher level incorporation or instrumentalizing ?https://twitter.com/neuropoetic/status/1142591102865805312?s=19 …

          Your Personal Neurocrackpot added,

          Your Personal Neurocrackpot @neuropoetic
          Replying to @_rdgao @BenediktEhinger @AnneEUrai
          Maybe that's the sensitivity necessary to approximate linear trajectories in iterated updating and tracking of the sensorium?
          2 replies 0 retweets 3 likes
        6. Carsen Stringer‏ @computingnature Jun 23
          • Report Tweet
          Replying to @neuropoetic @o_guest

          Carsen Stringer Retweeted Andrew Pruszynski

          Check out this paper from @andpruhttps://twitter.com/andpru/status/1142418830217666560?s=20 …

          Carsen Stringer added,

          Andrew Pruszynski @andpru
          Replying to @shadlen @computingnature @marius10p
          Perceptual report is not the only thing these visual inputs are used for. In touch, for example, there is nearly an order of magnitude increase in orientation acuity when people are engaged in hand control. https://elifesciences.org/articles/31200 
          2 replies 0 retweets 2 likes
        7. Your Personal Neurocrackpot‏ @neuropoetic Jun 23
          • Report Tweet
          Replying to @computingnature @o_guest @andpru

          Woah, that's amazingly interesting and super relevant! @o_guest @ProfData do you also have anything to add here - relevant theories/works/observations? - it seems particularly interesting in terms of resolution/acuity idiosyncratic to specific implementation-alg couplings?

          1 reply 0 retweets 2 likes
        8. Olivia Guest | Ολίβια Γκεστ‏ @o_guest Jun 23
          • Report Tweet
          Replying to @neuropoetic @computingnature and

          Oh, I'll have to have a serious think and I'm really crashing from both an exhausting day and a week of conference! 😅

          1 reply 0 retweets 1 like
        9. Your Personal Neurocrackpot‏ @neuropoetic Jun 23
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          Replying to @o_guest @computingnature and

          Rest well and thanks for investing some brain energy for my crackpottery 😅

          0 replies 0 retweets 0 likes
        10. End of conversation

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