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Leo Kozachkov Profile
Leo Kozachkov

@Leokoz8

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Doing cybernetics (without being allowed to call it that). Goldstein Fellow @IBMResearch. Incoming Asst Professor @BrownUniversity, 2025. Prev: @MIT, @RutgersU

Yorktown Heights, NY
Joined February 2009
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@Leokoz8
Leo Kozachkov
19 days
RT @QuantaMagazine: Martin Schrimpf (@martin_schrimpf) trained an AI model to generate sentences which can activate or suppress neural acti….
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@Leokoz8
Leo Kozachkov
1 month
RT @aran_nayebi: Our first NeuroAgent! 🐟🧠. Excited to share new work led by the talented @rdkeller, showing how autonomous behavior and who….
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@Leokoz8
Leo Kozachkov
1 month
Personal note: as @aran_nayebi pointed out, this project started back at MIT during our faculty job search. This was. not an easy time. There were months when, to quote another scientist, I used to come into the office just to have the privilege of walking home with Aran 😘.
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@Leokoz8
Leo Kozachkov
1 month
An awesome collaboration with @aran_nayebi, led by the amazing @rdkeller! The neural-glial circuit underlying futility integration in larval zebrafish naturally emerges in intrinsically motivated, embodied agents. See their excellent threads (and the preprint) for the details!.
@rdkeller
Reece Keller
1 month
1/ I'm excited to share recent results from my first collaboration with the amazing @aran_nayebi and @Leokoz8! . We show how autonomous behavior and whole-brain dynamics emerge in embodied agents with intrinsic motivation driven by world models.
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@Leokoz8
Leo Kozachkov
1 month
RT @DimaKrotov: I am very excited about our new paper just published in PNAS. Dense Associative Memory is a versatile family of models th….
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@Leokoz8
Leo Kozachkov
1 month
P.S., the first image in this thread shows a single astrocyte in the mouse visual cortex (accessed via MICrONS: , with an overlaid network of astrocyte processes and the governing energy equation for our network shown below.
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@Leokoz8
Leo Kozachkov
1 month
Paper: (6/6).
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@Leokoz8
Leo Kozachkov
1 month
Takeaway: Memory may not live solely in synaptic weights. Our work suggests it could also reside in the molecular machinery of astrocytes. This reframes our understanding of memory—and opens new directions in neuroscience, ML, and neuromorphic computing. (5/6).
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@Leokoz8
Leo Kozachkov
1 month
By tuning astrocyte connectivity, the model spans a spectrum: from Hopfield-like Dense Associative Memory to Transformer-like architectures. This flexibility gives rise to a continuum of highly performant systems. (4/6).
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@Leokoz8
Leo Kozachkov
1 month
Core idea: astrocytes store information in internal calcium dynamics and inter-process communication. This astrocytic “hardware” enables many-neuron interactions and supports a superior memory scaling law—outperforming all known biologically plausible models. (3/6).
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@Leokoz8
Leo Kozachkov
1 month
One astrocyte can interact with millions of synapses—detecting neurotransmitters, modulating synaptic strength, and signaling back to neurons. Our theory shows how these dynamics can support powerful associative memory functions. (2/6).
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@Leokoz8
Leo Kozachkov
1 month
Big week for astrocyte research: 3 new Science papers link astrocytes to behavior. We're excited to add to the momentum with our new PNAS paper: a theory, grounded in biology, proposing astrocytes as key players in memory storage and recall. w/ JJ Slotine and @DimaKrotov (1/6)
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@Leokoz8
Leo Kozachkov
4 months
RT @neuroprinciples: If you are around for the @CosyneMeeting conference and interested in how neural computations happen in the brain with….
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@Leokoz8
Leo Kozachkov
8 months
RT @wredman4: Our paper "Identifying Equivalent Training Dynamics" was accepted as a spotlight (top ~5%) 💡 to NeurIPS! A real dream team (b….
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@Leokoz8
Leo Kozachkov
9 months
RT @DimaKrotov: I have been thinking about boundaries between the disciplines in the last couple of days. What is Physics and what is not?….
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@Leokoz8
Leo Kozachkov
10 months
Did you know there is a video of Warren McCulloch (yes, that McCulloch) talking about neural networks while shirtless and smoking a bogie? I didn't.
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@Leokoz8
Leo Kozachkov
10 months
RT @tfburns: I'm on the job market! Looking for positions where I can leverage my background in AI/ML and computational neuroscience. Below….
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@Leokoz8
Leo Kozachkov
1 year
RT @adamjeisen: Our paper is out today in Neuron! Huge thanks to my co-first author @Leokoz8, co-advisors @MillerLabMIT and @FieteGroup, an….
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@Leokoz8
Leo Kozachkov
1 year
RT @MillerLabMIT: "The brain has to operate on a knife's edge between excitability and chaos". He's right, you know. .
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@Leokoz8
Leo Kozachkov
1 year
RT @MillerLabMIT: New paper! Propofol anesthesia causes unconsciousness by making your brain more chaotic. It does this *increasing* inhib….
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