@willdecothi

Neuroscience postdoc @ucl. Using machine learning and computational modelling to help understand memory and navigation. Very amateur footballer for @Monstars_UK

 United Kingdom
ucl.ac.uk/~ucbpwjw/
Joined September 2015
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  • Following359
  • Followers546
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Just published in @eLife! This work was done with the amazing @neuro_kim @caswellcaswell & supremely talented co-first author @TomNotGeorge! TLDR? There's evidence hippocampus functions like a 'predictive map' - so how might this be achieved in the brain? elifesciences.org/articles/8…

Rapid learning of predictive maps with STDP and theta phase precession

A close approximation to the successor representation is learnt by a simple spike-time-dependent learning rule between cells undergoing theta phase precession.

elifesciences.org
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Excited to share our updated preprint on the neural basis of foraging decisions! This work was co-led by Michael Bukwich (twitterless, now at UCL) and me, with major contributions from co-authors, and the incredible animation is by @KJHerr23. (1/12) biorxiv.org/content/10.1101/…
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Animals can learn to use all kinds of brain-computer interfaces, from controlling single neurons to large populations of neurons in motor ctx. How do they do this? Thrilled to be finally sharing our research on this question, now up on biorxiv! 🧵
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Tom George@TomNotGeorge9 Feb 2024
RatInABox🐀📦- which began accidentally from some old code I had lying around - grew to become a massive toolkit for navigational research. It's immensely gratifying to see it finally published and being used in such a variety of ways across the field. elifesciences.org/articles/8…

RatInABox, a toolkit for modelling locomotion and neuronal activity in continuous environments

A new python package standardises and simplifies how spatial behaviour and neural representations are modelled in continuous environments.

elifesciences.org
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Sam Gershman@gershbrain12 Feb 2024
New survey on predictive representations in reinforcement learning, covering AI, cognitive, and neuroscience perspectives: arxiv.org/abs/2402.06590 Joint work with @cogscikid, @momchiltomov, @willdecothi, @caswellcaswell

Predictive representations: building blocks of intelligence

Adaptive behavior often requires predicting future events. The theory of reinforcement learning prescribes what kinds of predictive representations are useful and how to compute them. This paper...

arxiv.org
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There are still places left for virtual (online) attendance! Find the full programme and register here: eventbrite.com/e/ucl-neuroai…

UCL NeuroAI Annual Conference 2023

Join us on Tuesday 28 November 2023 for the 4th UCL Annual NeuroAI Conference

eventbrite.com
UCL_NeuroAI (inactive)@UCL_Neuro_AI3 Oct 2023
📢 We are very happy to announce the 4th @ucl Annual #NeuroAI Conference, featuring leading speakers at the cutting edge of ML and neuroscience from around the world! Join us on Tue 28 Nov 2023 at @SWC_Neuro Details, registration and abstract submission: eventbrite.com/e/ucl-neuroai…

UCL NeuroAI Annual Conference 2023

Join us on Tuesday 28 November 2023 for the 4th UCL Annual NeuroAI Conference

eventbrite.com
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This paper is now out at @NatureComms! nature.com/articles/s41467-0… Thanks to helpful reviewer comments, we've added more analyses about the effects of ketamine on MEC since the preprint (1/2)
Lisa Giocomo
@lisa_giocomo6 Feb 2023
New paper on how ketamine impacts the neural circuits that support navigation! Congratulations to Kei Masuda and team (Yanjun Sun and @EmilyAeryJones) for a fantastic study on a very novel topic for the lab! 🧵below! biorxiv.org/content/10.1101/…

Ketamine evoked disruption of entorhinal and hippocampal spatial maps

Ketamine, a rapid-acting anesthetic and acute antidepressant, carries undesirable spatial cognition side effects including out-of-body experiences and spatial memory impairments. The neural substra...

biorxiv.org
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Save the date for our next UCL #NeuroAI online seminar, where we are excited to be hosting Prof. Thomas Nowotny @DrTNowotny (@SussexUni). Talk title: "Loss shaping enhances exact gradient learning with EventProp in Spiking Neural Networks" 🗓️ Wednesday 18 Oct 2023 ⏰2-3pm BST
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Cognitive models of behavior are a key part of neuroscience. But discovering them is hard! Neural networks are powerful models. But interpreting them cognitively is hard! We explore automatically learning interpretable models using "Disentangled RNNs" biorxiv.org/content/10.1101/…

Cognitive Model Discovery via Disentangled RNNs

Computational cognitive models are a fundamental tool in behavioral neuroscience. They instantiate in software precise hypotheses about the cognitive mechanisms underlying a particular behavior....

biorxiv.org
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This is in two days (Wednesday 2pm BST). Register and don't miss out! ⬇️
UCL_NeuroAI (inactive)@UCL_Neuro_AI4 Jul 2023
For the next UCL #NeuroAI online seminar, we are excited to be hosting Prof Anna Schapiro @AnnaSchapiro (@Penn) Talk title: "Learning representations of specifics and generalities over time" 🗓️ Wednesday 12 July 2023 ⏰2-3pm BST ℹ️ Register here: ucl.ac.uk/research/domains/e…
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Will de Cothi retweeted
Tom George@TomNotGeorge6 Jul 2023
RatInABox just passed 100 stars⭐️on Github which is a perfectly arbitrary milestone at which to announce a new feature, thanks to a contribution by community member @SynapticSage: RiaB is now compatible with the OpenAIs “gym” API. This is big for RL users. Let me explain...🧵
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For the next UCL #NeuroAI online seminar, we are excited to be hosting Prof Anna Schapiro @AnnaSchapiro (@Penn) Talk title: "Learning representations of specifics and generalities over time" 🗓️ Wednesday 12 July 2023 ⏰2-3pm BST ℹ️ Register here: ucl.ac.uk/research/domains/e…
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Markus Frey@CYHSM21 Jun 2023
Replying to @NauMatt
@NauMatt and I are excited to introduce DeepMReye v0.2 🥳Now featuring a local Streamlit app for efficient extraction of gaze coordinates using pre-trained model weights: github.com/DeepMReye/DeepMRe… Please let us know if you run into any problems with this!
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Cris Niell@cris_niell20 Jun 2023
Now out @CurrentBiology. Our work using calcium imaging to study visual processing in the octopus brain! cell.com/current-biology/ful…

Functional organization of visual responses in the octopus optic lobe

Pungor et al. use calcium imaging to measure visually evoked response properties in the cephalopod central nervous system. They demonstrate shared and novel aspects of visual function in the octopus,...

cell.com
Cris Niell@cris_niell21 Feb 2023
Very excited to share our new preprint on visual processing in the octopus! Led by Judit Pungor @traceofpink, together with @jsongco_ and @climbing_octo, we measured the functional organization of visual responses in the octopus brain. 🐙👁️ biorxiv.org/content/10.1101/… 1/n
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Will de Cothi retweeted
Markus Frey@CYHSM19 Jun 2023
Excited to share our work on scene perception in artificial neural networks #CVPR2023. Will talk about egocentric to allocentric reference frame transformations & unsupervised scene segmentation (10.30am - TUE-AM, 202) Can't make it? See Video below👇 youtu.be/anPiPsqjJz8

[CVPR 2023] Probing neural representations of scene perception

Paper: https://arxiv.org/abs/2303.06367Code: https://github.com/CY...

youtube.com
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Will de Cothi retweeted
OpenBehavior@OpenBehavior15 Jun 2023
RatInABox is an #opensource Python toolkit developed by @TomNotGeorge in @caswellcaswell's lab. It models rodent locomotion and generates electrophysiological data for place cells, grid cells, and more. Check it out on OpenBehavior! #neuroscience edspace.american.edu/openbeh…
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Our lab at UCL (ucl.ac.uk/cortexlab) is looking for a Research Technician in computational and experimental #neuroscience. Ideal for those who wish to gain research experience before considering PhD studies. More info: ucl.ac.uk/cortexlab/position…. Deadline: 20 June.

Cortexlab | UCL Faculty of Brain Sciences

We aim to understand how populations of neurons combine sensory and internal signals to guide action.

ucl.ac.uk
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Tom George@TomNotGeorge13 Jun 2023
Thanks! I really enjoyed giving this talk. For anybody interested to learn more, find our paper, as well as those from @chingfang17 and @ClopathLab, here: • elifesciences.org/articles/8… • elifesciences.org/articles/8… • elifesciences.org/articles/8…

Rapid learning of predictive maps with STDP and theta phase precession

A close approximation to the successor representation is learnt by a simple spike-time-dependent learning rule between cells undergoing theta phase precession.

elifesciences.org
SWC@SWC_Neuro13 Jun 2023
Congratulations to PhD student @TomNotGeorge on his Early Career Neuroscience prize! 🎉 Tom gave a talk this afternoon at the #UCLNeuroDomain symposium on how the hippocampus learns predictive maps. Learn more about the collaboration: sainsburywellcome.org/web/bl…
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Join us tomorrow, 2pm!
UCL_NeuroAI (inactive)@UCL_Neuro_AI7 Jun 2023
For the next UCL #NeuroAI online seminar, we are happy to be hosting Prof Neil Burgess @NeilBurgess10 (@UCL_ICN) Talk title: "Understanding our memory system as a generative model" 🗓️ Wednesday 14 June 2023 ⏰2-3pm BST ℹ️Find out more and register: ucl.ac.uk/research/domains/e…
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Come see our poster (#12) at this year's UCL Neuroscience Symposium in poster session 2 (1.10-2.30 pm)! I will present our work on how humans reuse factorized and abstracted prior knowledge to compositionally generalize in novel situations.
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