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gershbrain's profile
Sam Gershman
Sam Gershman
Sam Gershman
@gershbrain

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Sam Gershman

@gershbrain

Associate Professor, Department of Psychology and Center for Brain Science, Harvard University

Cambridge, MA
gershmanlab.webfactional.com
Joined July 2016

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    Sam Gershman‏ @gershbrain Mar 4

    I'm looking for examples in the history of neuroscience where no one thought to measure something until a theory posited that it should exist (i.e., empirical phenomena that were effectively invisible in the absence of theory).

    8:28 AM - 4 Mar 2020
    • 117 Retweets
    • 474 Likes
    • Klara Andersson Jovany Agathe Tamir Eliav Cristiana Tisca Pelagia Hope zrkrlc Chris Pratt, PhD Jisu Lee
    77 replies 117 retweets 474 likes
      1. Sam Gershman‏ @gershbrain Mar 4

        Here is an example of what I'm talking about: https://www.sciencedirect.com/science/article/pii/S0896627312004266 … One can't discover medial axis coding neurons until one formulates the concept of a medial axis skeleton.

        2 replies 2 retweets 41 likes
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      2. Naoshige Uchida‏ @naoshigeuchida Mar 4
        Replying to @gershbrain

        Distributional reinforcement learning This is new and to be established but this could be a good example for that. I wished that we would have thought about it from the data but... https://www.nature.com/articles/s41586-019-1924-6.epdf?author_access_token=ASaTR4qMH190wSHiKLjQ7NRgN0jAjWel9jnR3ZoTv0OgnvLoVhK46-VND2gsGkjz36rZENj3hLKoFtZ6yylssm1cot8UrjoCWaDrIBKZs-uF0doLijXxV5GpU93RmqJeFMCQ_BzuM9Sr7acs_dVtKg%3D%3D …

        1 reply 1 retweet 69 likes
      3. Sam Gershman‏ @gershbrain Mar 4
        Replying to @naoshigeuchida

        Yes, terrific example!

        0 replies 0 retweets 2 likes
      4. End of conversation
      1. New conversation
      2. Nicole Rust‏ @VisualMemoryLab Mar 4
        Replying to @gershbrain

        I am fond of this recent one (2017), by @weixx2https://www.pnas.org/content/early/2017/09/01/1619153114 …

        1 reply 0 retweets 10 likes
      3. Sam Gershman‏ @gershbrain Mar 4
        Replying to @VisualMemoryLab @weixx2

        That is a great example for psychophysics. Did it make any brain phenomena visible that were previously invisible?

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. New conversation
      2. Daniel Roy‏ @roydanroy Mar 4
        Replying to @gershbrain

        Margin perhaps.

        1 reply 0 retweets 1 like
      3. Sam Gershman‏ @gershbrain Mar 4
        Replying to @roydanroy

        Someone measured a margin in the brain?

        1 reply 0 retweets 0 likes
      4. 1 more reply
      1. New conversation
      2. Sara A Solla‏ @SaraASolla Mar 4
        Replying to @gershbrain

        My first neuroscience paper: a model of striatum spiny neurons that could become bistable under dopamine. It was a theory paper. One referee objected: 'you cannot predict what has not been observed'. A classic! I told myself: Toto, I've a feeling we're not in physics any more.

        2 replies 6 retweets 71 likes
      3. Corgi on Cantaloupe‏ @Psycholosopher Mar 4
        Replying to @SaraASolla @gershbrain

        I hope you replied: ‘You can ONLY predict what has not be observed’.

        1 reply 0 retweets 23 likes
      4. 1 more reply
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      2. Romain Brette‏ @RomainBrette Mar 4
        Replying to @gershbrain

        Ionic theory of excitability. One I like is Hodgkin's experiment where he puts a squid axon in oil to show that it slows down conduction. More famous is single-channel recordings with patch-clamp, and before that, noise analysis to test ionic channel theory.

        1 reply 1 retweet 18 likes
      3. Tony Zador‏ @TonyZador Mar 4
        Replying to @RomainBrette @gershbrain

        yes! noise analysis. Until Anderson & Stevens (1973), people didnt realize that endplate noise could be used to infer the single channel conductance of an ACh receptor. https://www.ncbi.nlm.nih.gov/pubmed/4543940 

        1 reply 0 retweets 19 likes
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