T. Anderson Keller
Postdoctoral Fellow at Harvard Kempner Institute. Trying to bring natural structure to artificial neural representations. Prev: PhD at UvA. Intern @ Apple MLR, Work @ Intel Nervana
- Reposted by T. Anderson KellerThe hippocampal map has its own attentional control signal! Our new study reveals that theta #sweeps can be instantly biased towards behaviourally relevant locations. See 📹 in post 4/6 and preprint here 👉 www.biorxiv.org/content/10.6... 🧵(1/6)
- Reposted by T. Anderson KellerHow do brain areas control each other? 🧠🎛️ ✨In our NeurIPS 2025 Spotlight paper, we introduce a data-driven framework to answer this question using deep learning, nonlinear control, and differential geometry.🧵⬇️
- Reposted by T. Anderson Keller@andykeller.bsky.social @kempnerinstitute.bsky.social presented “Flow Equivariant Cybernetics”, a blueprint for agents that learn through continuous feedback with their environment.
- Reposted by T. Anderson KellerNew in the #DeeperLearningBlog: #KempnerInstitute research fellow @andykeller.bsky.social introduces the first flow equivariant neural networks, which reflect motion symmetries, greatly enhancing generalization and sequence modeling. bit.ly/451fQ48 #AI #NeuroAI
- Reposted by T. Anderson Keller(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
- Reposted by T. Anderson KellerWhat shapes the topography of high-level visual cortex? Excited to share a new pre-print addressing this question with connectivity-constrained interactive topographic networks, titled "Retinotopic scaffolding of high-level vision", w/ Marlene Behrmann & David Plaut. 🧵 ↓ 1/n
- Reposted by T. Anderson KellerAre you an RL PhD at Harvard who has had your funding wrecked by the government and working on topics related to multi-agent? Reach out, I am happy to try to find a way to support you.
- Reposted by T. Anderson KellerLooking forward to presenting our work on cortico-hippocampal coupling and wave-wave interactions as a basis for some core human cognitions 5pm May 6th EST (US) 8am May 7th AEST (Sydney) Zoom link: columbiacuimc.zoom.us/j/92736430185 Thanks to WaveClub conveners Erfan Zabeh & Uma Mohan
- Reposted by T. Anderson KellerIt’s another big day for the #KempnerInstitute at @CosyneMeeting! Check out our work highlighted in poster session 3 today! #COSYNE2025
- Reposted by T. Anderson KellerSuper interesting thread!
- In the physical world, almost all information is transmitted through traveling waves -- why should it be any different in your neural network? Super excited to share recent work with the brilliant @mozesjacobs.bsky.social: "Traveling Waves Integrate Spatial Information Through Time" 1/14
- In the physical world, almost all information is transmitted through traveling waves -- why should it be any different in your neural network? Super excited to share recent work with the brilliant @mozesjacobs.bsky.social: "Traveling Waves Integrate Spatial Information Through Time" 1/14
- Just as ripples in water carry information across a pond, traveling waves of activity in the brain have long been hypothesized to carry information from one region of cortex to another (Sato 2012)*; but how can a neural network actually leverage this information? * www.cell.com/neuron/fullt... 2/14
- Inspired by Mark Kac’s famous question, "Can one hear the shape of a drum?" we thought: Maybe a neural network can use wave dynamics to integrate spatial information and effectively "hear" visual shapes... To test this, we tried feeding images of squares to a wave-based RNN: 3/14
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View full threadAnd not to forget, a huge thanks to all those involved in the work: Lyle Muller, Roberto Budzinski & Demba Ba!! And further thanks to those who advised me and shaped my thoughts on these ideas @wellingmax.bsky.social & Terry Sejnowski. This work would not have been possible without their guidance.
- Reposted by T. Anderson KellerTraveling waves of neural activity are observed all over the brain. Can they be used to augment neural networks? I am thrilled to share our new work, "Traveling Waves Integrate Spatial Information Through Time" with @andykeller.bsky.social! 1/13
- Reposted by T. Anderson KellerReally interesting RNN work. And based on some spiking simulations I've tinkered with, it seems plausible that PV, CB & CR interneurons can contribute to changing the boundary conditions and the 'elasticity' of the oscillating 'rubber sheet' of cortex (and probably hippocampus and amygdala too). 🤓
- In the physical world, almost all information is transmitted through traveling waves -- why should it be any different in your neural network? Super excited to share recent work with the brilliant @mozesjacobs.bsky.social: "Traveling Waves Integrate Spatial Information Through Time" 1/14
