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Kanaka Rajan

@kanakarajanphd.bsky.social
3.8K followers 248 following 60 posts

Associate Professor at Harvard & Kempner Institute. Applying computational frameworks & machine learning to decode multi-scale neural processes. Marathoner. Rescue dog mom. www.rajanlab.com

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Kanaka Rajan @kanakarajanphd.bsky.social · 07/08/2026
(1/8) Our approach for untangling brain-wide interactions is out today in @cp-neuron.bsky.social! Current-Based Decomposition (CURBD) uses RNNs constrained by real neural data to reveal the input driving neurons, uncovering how brain regions talk to each other. doi.org/10.1016/j.ne... 🧵👇
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Kanaka Rajan @kanakarajanphd.bsky.social · 04/08/2026
Heading to #CCN26? Stop by and see what the Rajan Lab has been working on! Don't miss presentations from John Vastola, Satpreet Singh, and Nathan Wu. Drop by their sessions to chat about our ongoing projects and say hello to the team! @purpleantelope.bsky.social @satpreetsingh.bsky.social
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Kanaka Rajan @kanakarajanphd.bsky.social · 30/07/2026
Congratulations to @jenbussell.bsky.social and the whole team on this work! I'm so happy to see it out in the world 🎉 @ryanpaulbadman1.bsky.social
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The Transmitter @thetransmitter.bsky.social · 15/07/2026
In the latest entry of Frameshift, our series about alternative careers in neuroscience, Soha Ashrafi, executive director of research at Harvard Medical School, shares how supporting a department full of neuroscientists brings her “scientific joy.” www.thetransmitter.org/frameshift/m...
thetransmitter.org
Making an impact through academic administration
As executive director of research at Harvard Medical School, Soha Ashrafi supports more than 300 scientists, students and staff members.
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 02/07/2026
📢 Just announced! Join us for the #KempnerInstitute workshop “Learning Dynamics in Natural and Artificial Intelligence: Evolution, Adaptation, and the Foundations of Efficient Learning.” Learn more, register, or submit an abstract 👉 bit.ly/3QwJlHR
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Learning Dynamics in Natural and Artificial Intelligence - Kempner Institute
This workshop will convene researchers from artificial intelligence, neuroscience, cognitive science, and related disciplines to examine the principles governing learning and training dynamics across ...
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Kanaka Rajan @kanakarajanphd.bsky.social · 10/06/2026
This beautifully written piece by Guillame Dumas for @psychologytoday.com makes a compelling case for social neuroAI: the idea that minds don't just interact, they co-create intelligence *between* them.
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Biswas Family Foundation @biswasfamilyfdn.bsky.social · 20/05/2026
NEW: $3M in Fast Grants for AI-driven life sciences research. We’re funding pilot projects in AI diagnostics, prediction, and personalized therapeutics — with a two-week review turnaround. 35 grants · $25K–$100K · Deadline: June 15 Please share! www.biswasfamilyfoundation.org/science/fast...
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 27/04/2026
NEW from the #KempnerInstitute: researchers introduce ForageWorld, a foraging task made to evaluate analysis techniques for learning, planning, and more. Read the #DeeperLearning blog post: bit.ly/4vPrewB #AI Authors: @kanakarajanphd.bsky.social, @ryanpaulbadman1.bsky.social, Riley Simmons-Edler.
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Deep RL Needs Deep Behavior Analysis: Exploring Implicit Planning by Model-Free Agents in Open-Ended Environments - Kempner Institute
Model-free RL agents trained on simple tasks can be evaluated by whether or not they achieve their simple rewards, but complex open-ended environments demand richer analysis. ForageWorld introduces a ...
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 23/04/2026
🚀 Starting Day 1 of #ICLR2026 with an exciting lineup of presentations from researchers at the #KempnerInstitute! Take a look at the full list of today’s Kempner talks 👇 @iclr-conf.bsky.social #AI #NeuroAI @satpreetsingh.bsky.social @kanakarajanphd.bsky.social @annhuang42.bsky.social
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Kanaka Rajan @kanakarajanphd.bsky.social · 22/04/2026
✍️ In the @kempnerinstitute.bsky.social blog: our new tool built to compare the dynamics of complex systems when both internal circuitry and external inputs shape their behavior. Catch @annhuang42.bsky.social presenting this work at #ICLR! kempnerinstitute.harvard.edu/research/dee...
kempnerinstitute.harvard.edu
InputDSA: Demixing then comparing recurrent and externally driven dynamics in complex systems - Kempner Institute
We explored how to measure the similarity between two complex systems when they are driven by external inputs, like biological neural circuits or reinforcement learning agents. Our novel method, calle...
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Jason Shepherd @jasonsynaptic.bsky.social · 10/04/2026
It’s brutal in academia right now. A lot is out of our control, but it doesn’t cost anything to remember that there are humans behind papers and grants…reviewers, program officials and funders can be more empathetic in the face of unprecedented chaos in the US scientific enterprise.
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Kanaka Rajan @kanakarajanphd.bsky.social · 11/03/2026
📍 #Cosyne26 bound? Thrilled to have PhD students @annhuang42.bsky.social and Sonja Johnson-Yu representing the Rajan Lab this year. Shout out to co-first authors @satpreetsingh.bsky.social and @neurostrow.bsky.social. Catch their sessions to learn about our newest work 🧠🤖 #NeuroAI #CompSci
Rajan Lab at Cosyne
Thurs., March 12 20:30-23:30 Pavilion 1 Poster Session 1
#1-059: Active electrosensing and communication in MARL-trained weakly electric fish foraging agents
Sonja Johnson-Yu*, Satpreet Singh*, Zhouyang Lu, Aaron Walsman, Federico Pedraja, Denis Turcu, Pratyusha Sharma, Naomi Saphra, Nathaniel Sawtell, Kanaka Rajan
*co-first authors
Sat., March 14 11:45-12:00 Auditorium I Session 7: Dynamical Inference
InputDSA: Demixing then comparing recurrent and externally driven dynamics
Ann Huang*, Mitchell Ostrow*, Satpreet Singh, Leo Kozachkov, Ila Fiete, Kanaka Rajan
*co-first authors
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Kanaka Rajan @kanakarajanphd.bsky.social · 03/03/2026
Interesting physics punctuated by incredible videos!
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The Transmitter @thetransmitter.bsky.social · 19/02/2026
Differences between species should be treated as informative constraints that refine theory, not as inconsistencies to be explained away, writes @suthanalab.bsky.social. #neuroskyence www.thetransmitter.org/animal-model...
thetransmitter.org
Neuroscience has a species problem
If neuroscience is serious about building general principles of brain function, cross-species dialogue must become a core organizing principle.
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Kanaka Rajan @kanakarajanphd.bsky.social · 26/02/2026
Can we predict a thought before it happens? To know what one neuron will do next, you have to know what the entire brain is doing right now. In our latest @kempnerinstitute.bsky.social Deeper Learning blog, @duranrin.bsky.social introduces POCO, a tool paving the way for adaptive neurotechnology.
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Kanaka Rajan @kanakarajanphd.bsky.social · 09/02/2026
Same task, different strategy ↔️ Why do identical neural network models develop separate internal approaches to solve the same problem? @annhuang42.bsky.social explores the factors driving variability in task-trained networks in our latest @kempnerinstitute.bsky.social Deeper Learning blog.
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Kanaka Rajan @kanakarajanphd.bsky.social · 16/12/2025
New paper for #neurips2025! AI models adjust millions of internal settings to get better at a task. But how are these adjustments determined? For decades, we've mostly figured this out through trial & error. We took a different approach...🧵 (1/6) 🔗 openreview.net/forum?id=oMi...
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Kanaka Rajan @kanakarajanphd.bsky.social · 04/12/2025
Celebrating the Rajan Lab’s papers at #NeurIPS2025! Stop by to chat with these talented students and postdocs 🎉
Conference poster scheduleWorkshop poster schedule
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The Transmitter @thetransmitter.bsky.social · 21/11/2025
To identify the most transformative tools and technologies in the past five years, @thetransmitter.bsky.social surveyed readers and contributors and worked with a market-research firm to interview neuroscientists around the world. See what they had to say: bit.ly/3LYTNoB #StateOfNeuroscience
thetransmitter.org
Survey: What are neuroscience’s most transformative new tools?
Which new tools—including artificial intelligence, deep-learning methods, genetic tools and advanced neuroimaging—are making the largest impact?
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Ann Huang @annhuang42.bsky.social · 24/11/2025
📍Excited to share that our paper was selected as a Spotlight at #NeurIPS2025! arxiv.org/pdf/2410.03972 It started from a question I kept running into: When do RNNs trained on the same task converge/diverge in their solutions? 🧵⬇️
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Kanaka Rajan @kanakarajanphd.bsky.social · 13/11/2025
Awesome work co-led by my student @annhuang42.bsky.social and @neurostrow.bsky.social on disentangling, then comparing recurrent and externally driven dynamics! Look out for more incredible work from @annhuang42.bsky.social coming up at NeurIPS 👀
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Kanaka Rajan @kanakarajanphd.bsky.social · 16/10/2025
Congrats to Ann Huang for an excellent presentation at last week's @kempnerinstitute.bsky.social all-hands! 👏 Ann shared exciting updates about our InputDSA tool - more to come soon. Thrilled she had the chance to present to our engaged and supportive community.
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Kanaka Rajan @kanakarajanphd.bsky.social · 12/09/2025
(1/8) New paper from our team! Yu Duan & Hamza Chaudhry introduce POCO, a tool for predicting brain activity at the cellular & network level during spontaneous behavior. Find out how we built POCO & how it changes neurobehavioral research 👇 arxiv.org/abs/2506.14957
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Kanaka Rajan @kanakarajanphd.bsky.social · 09/09/2025
Thanks for having me at @camp_course and the @iitmadras Brain Center during my visit to India this summer!🥭 It was lovely to be back home, and a pleasure to work with the young scientists there who are finding their path in computational neuroscience 🧠
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Kanaka Rajan @kanakarajanphd.bsky.social · 14/08/2025
Brilliant piece by @mattperich.bsky.social on neural manifolds 🌟 His ‪essay in @thetransmitter.bsky.social shows how this view changes the game in computational neuroscience, reproducing behavioral flexibility within finite neural constraints 🧠 www.thetransmitter.org/neural-dynam...
thetransmitter.org
Neural population-based approaches have opened new windows into neural computations and behavior
Neural manifold properties can help us understand how animal brains deal with complex information, execute flexible behaviors and reuse common computations.
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Kanaka Rajan @kanakarajanphd.bsky.social · 06/08/2025
Check out @jordancollver.bsky.social’s‬ great illustration of modular RNNs training to work like a bio-brain🦾🧠 Thanks to Crearte for featuring our collaboration! www.instagram.com/crearte.ca/p...
instagram.com
The Crearte Foundation | #ArtScience on Instagram: "When a neurobiologist is also a comic artist, science can have a whole new storyline. In a 2022 collaboration between the Rajan Lab at Harvard Med...
6 likes, 0 comments - crearte.ca on July 28, 2025: "When a neurobiologist is also a comic artist, science can have a whole new storyline. In a 2022 collaboration between the Rajan Lab at Harvard Med...
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Kanaka Rajan @kanakarajanphd.bsky.social · 02/07/2025
(1/7) New preprint from Rajan lab! 🧠🤖 @ryanpaulbadman1.bsky.social & Riley Simmons-Edler show–through cog sci, neuro & ethology–how an AI agent with fewer ‘neurons’ than an insect can forage, find safety & dodge predators in a virtual world. Here's what we built Preprint: arxiv.org/pdf/2506.06981
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Kanaka Rajan @kanakarajanphd.bsky.social · 12/06/2025
New work incoming at #RLDM2025 🤖 🐟 While we look forward to sharing our research, I'm mindful that many colleagues, including the authors of our second abstract, can't attend due to funding & travel issues. Read the extended abstracts: rldm.org/program-2025/ #neuroskyence
Rajan Lab presentation at RLDM 2025, Investigating active electrosensing and communication in deep-reinforcement learning trained artificial fish collectives
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Kanaka Rajan @kanakarajanphd.bsky.social · 05/05/2025
It was such a pleasure to host @kordinglab.bsky.social at @kempnerinstitute.bsky.social last week - thank you for joining us!
Kanaka and Konrad smiling together in front of a blackboard
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Kanaka Rajan @kanakarajanphd.bsky.social · 02/05/2025
Big day for the Rajan lab at @harvardmed.bsky.social Friday Seminar Series 🌟 @satpreetsingh.bsky.social & Siyan Zhou gave outstanding talks on collective behaviors in artificial fish schools & disordered attractors in mice. I’m so proud of their work! 🤖🧠
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The Transmitter @thetransmitter.bsky.social · 15/04/2025
In his new book, published today, Nachum Ulanovsky calls on the field to embrace naturalistic conditions and move away from overcontrolled experiments. #neuroskyence www.thetransmitter.org/systems-neur...
thetransmitter.org
‘Natural Neuroscience,’ an excerpt
In his new book, Nachum Ulanovsky calls on the field to embrace naturalistic conditions and move away from overcontrolled experiments.
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Kanaka Rajan @kanakarajanphd.bsky.social · 28/03/2025
Headed to #Cosyne2025? Don't miss this workshop led by Rajan lab postdocs @satpreetsingh.bsky.social, @chingfang.bsky.social & @gzmozd.bsky.social on how complex tasks, agent-based models & theory-experiment cross-talk help us study how the brain works 🧠🤖 #neuroskyence @cosynemeeting.bsky.social
COSYNE 2025 workshop information for the Rajan Lab.
Monday, March 31, 9:00am-6:30pm features a Workshop titled 'Agent-based models in Neuroscience: Complex Planning, Embodiment, and Beyond'. The workshop explores digital agents and neural computations behind naturalistic behavior, bringing together experimentalists and theorists at the intersection of neuroscience, AI, and biomechanics.
Names and headshots for the organizers (Ching Fang, PhD; Satpreet Singh, PhD; and Gizem Ozdil, PhD) are included
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Kempner Institute at Harvard University @kempnerinstitute.bsky.social · 28/03/2025
Are you at @CosyneMeeting? Stop by the poster session today to see work from the #KempnerInstitute! #COSYNE2025 @cpehlevan.bsky.social @naoshigeuchida.bsky.social @blsabatini.bsky.social @kanakarajanphd.bsky.social @gershbrain.bsky.social
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Kanaka Rajan @kanakarajanphd.bsky.social · 28/03/2025
Big showing from the Rajan Lab at @cosynemeeting.bsky.social! We have posters on everything from multi-agent social foraging to neuromodulated neural networks. Catch us in Poster Sessions 2 & 3 🧠🤖 #Cosyne2025 #NeuroAI #CompSci #neuroskyence
COSYNE 2025 Rajan lab posters. 
Friday, March 28 - Poster Session 2:
2-043: Emergent small-group foraging under variable group size, food scarcity, and sensory capabilities by Zhouyang (Hanson) Lu, Satpreet H Singh, Sonja Johnson-Yu, Aaron Walsman, Kanaka Rajan
2-058: 'Modeling rapid neuromodulation in the cortex-basal ganglia-thalamus loop' by Julia Costacurta and Yu Duan (co-first), John Assad, Kanaka Rajan and Scott Linderman (co-senior)
2-060: 'Measuring and Controlling Solution Degeneracy across Task-Trained RNNs' by Ann Huang, Satpreet Singh, Kanaka Rajan

Saturday, March 29 - Poster Session 3:

3-020: 'ForageWorld: RL agents in complex foraging arenas develop internal maps for navigation and planning' by Ryan Badman, Riley Simmons-Edler, Joshua Lunger, John Vastola, William Qian, Kanaka Rajan
3-109: 'Inhibition-stabilized disordered dynamics in mouse cortex during navigational decision-making' by Siyan Zhou, Ryan Badman, Charlotte Arlt, Kanaka Rajan, Christopher Harvey
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Kanaka Rajan @kanakarajanphd.bsky.social · 19/03/2025
Attended my first @cziscience.bsky.social #Neuroscience 2025 Meeting 🧠 Grateful to speak alongside such amazing theorists, see old & new friends & connect across academia & industry Shoutout to @bjmarlin.bsky.social, @muraronara.bsky.social , @erinmgibson.bsky.social & all these wonderful folks🌟
Six women stand close together, smiling at the camera in a well-lit indoor space with arched windows at a professional conference. The background features black-framed doors and a glimpse of palm trees outside.
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Sainsbury Wellcome Centre @sainsburywellcome.bsky.social · 14/03/2025
With insights from SWC Seminar speakers Andrew Alexander (UCSB), @kanakarajanphd.bsky.social ( @harvard.edu ), Teresa Guillamón Vivancos (Instituto de Neurociencias de Alicante), @hannahpayne.bsky.social ( @columbiauniversity.bsky.social ) André Fenton (New York University)
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Sainsbury Wellcome Centre @sainsburywellcome.bsky.social · 14/03/2025
What do neural oscillations like theta and gamma do? 14 leading experts explain the role of rhythms in the brain from coordinating neural processes to encoding memories and more. Read more: www.sainsburywellcome.org/web/blog/mak... #BrainAwarenessWeek
Wave shape on an orange background
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Kathryn Hulick @kathrynhulick.substack.com · 06/03/2025
Could worm brains and ideas from neuroscience lead to better #AI? I just got my copy of a story I wrote about #neuromorphic computing for @sciencenews.bsky.social sciencenews.org/article/brai... 🧪 Thanks @subutaiahmad.bsky.social @kanakarajanphd.bsky.social & many others who shared their expertise
sciencenews.org
More brainlike computers could change AI for the better
New brain-inspired hardware, architectures and algorithms could lead to more efficient, more capable forms of AI.
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Kanaka Rajan @kanakarajanphd.bsky.social · 14/02/2025
Enjoyed sharing our work on electric fish with @dryohanjohn.bsky.social⚡🐟 Their electric "conversations" help us build models to discover neural mechanisms of social cognition. Work led by Sonja Johnson-Yu & @satpreetsingh.bsky.social with Nate Sawtell kempnerinstitute.harvard.edu/news/what-el...
Digital illustration of a school of red fish with simple geometric features on a purple background. Some fish are connected by curved dashed and solid lines, suggesting interactions or relationships between them.
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Kanaka Rajan @kanakarajanphd.bsky.social · 17/01/2025
Deeply honored to receive the Presidential Early Career Award for Scientists and Engineers #PECASE. Thanks to the NIH funding and my incredible team who make our work pushing the boundaries of NeuroAI possible 🧠🤖 www.whitehouse.gov/ostp/news-up...
whitehouse.gov
President Biden Honors Nearly 400 Federally Funded Early-Career Scientists | OSTP | The White House
Today, President Biden awarded nearly 400 scientists and engineers the Presidential Early Career Award for Scientists and Engineers (PECASE), the highest honor bestowed by the U.S. government on outst...
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Kanaka Rajan @kanakarajanphd.bsky.social · 20/12/2024
Delighted to have a chance to contribute my thoughts to @thetransmitter.bsky.social’s debut book! I highlight how noise in the brain could actively shape cognition & serve as a model for adaptive AI. Thank you @nicolecrust.bsky.social for including me in your piece! #neuroscience 🧠🤖
thetransmitter.org
The Transmitter books
The Transmitter’s first book, “Thinking about neuroscience: Essays from the field,” features a rich collection of writing from researchers Nicole Rust, Anthony Zador and many more.
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Nicole Rust @nicolecrust.bsky.social · 19/12/2024
My essay features @manlius.bsky.social, @antihebbiann.bsky.social, @marinopagan.bsky.social, @pessoabrain.bsky.social, @kanakarajanphd.bsky.social, @crozell.bsky.social and many more - all looking fabulous. @rebeccasky.bsky.social and @thetransmitter.bsky.social team do such a terrific job!
screenshot of me from the pdf
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Kanaka Rajan @kanakarajanphd.bsky.social · 04/12/2024
If you're interested in the future of #AI, the AE Global Summit on Open Problems for AI is tomorrow! 🤖 Join us to learn more about the biggest challenges in modern AI. I'm looking forward to discussing our work in #NeuroAI Register below 👇🏽Hope to see you there! www.algopreneurship.ai/register
algopreneurship.ai
Register — AE Global Summit on Open Problems for AI
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Rubén Moreno-Bote @morenobote.bsky.social · 03/12/2024
Joint the Comp Neuro conversation go.bsky.app/K8hiHqe
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Kanaka Rajan @kanakarajanphd.bsky.social · 15/11/2024
Can't recommend this starter pack enough!
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Kanaka Rajan @kanakarajanphd.bsky.social · 15/11/2024
👋🏽 Hi Bluesky! Happy to see so many more faces here. I’m an Associate Professor at Harvard and the Kempner Institute using AI and computational models to unlock the secrets of how our brains learn and make decisions across different scales 👩🏽‍🔬🧠🤖 #neuroskyence #academicsky www.rajanlab.com
rajanlab.com
Rajan Lab
The Rajan Lab integrates brain research with AI, by using real neuroscience data to build flexible, complex computational models of the brain.
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Nicole Rust @nicolecrust.bsky.social · 18/12/2023
My new piece for @thetransmitter.bsky.social. Why is treating brain dysfunction so ENORMOUSLY challenging? Because it amounts to controlling a complex system. Drawing from the history of weather research, I pose the question: Can it even be done? www.thetransmitter.org/systems-neur...
thetransmitter.org
Is the brain uncontrollable, like the weather?
The brain may be chaotic. Does that mean our efforts to control it are doomed?
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Nicole Rust @nicolecrust.bsky.social · 18/12/2023
With thoughts from 14 experts, including: @manlius.bsky.social, @antihebbiann.bsky.social, @pessoabrain.bsky.social, @kanakarajanphd.bsky.social, @crozell.bsky.social. Would love to hear your thoughts as well! #neuroskyence, #complexity, 🧪​
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Nicole Rust @nicolecrust.bsky.social · 18/12/2023
Comments appreciated! But they are comparable insofar as some of our favorite models of the brain (like RNNs) are in fact chaotic, @kanakarajanphd.bsky.social journals.aps.org/pre/abstract... That's not to say that we shouldn't be optimistic about control (Kanaka is). But it will be hard.
journals.aps.org
Stimulus-dependent suppression of chaos in recurrent neural networks
Neuronal activity arises from an interaction between ongoing firing generated spontaneously by neural circuits and responses driven by external stimuli. Using mean-field analysis, we ask how a neural ...
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Kanaka Rajan @kanakarajanphd.bsky.social · 11/11/2023
Tomorrow at 1pm in WCC 103 at SfN 2023 🧠🦑 I’ll share my story from engineering & physics to neuroscience, how computational models reveal novel mechanisms & make experimental predictions, and how neurocomics could help make my field more inclusive.
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