Predictive abstract task representations support few-shot learning in the rat brain https://www.biorxiv.org/content/10.64898/2026.07.26.740301v1
Jes Pass
@jespass.bsky.social
Neuroscience postdoc | Combining reinforcement learning and circuit-based neuroscience to understand what learning is
1/5 Over a decade of comparing deep neural networks to the human brain—but what have we actually learned? Our new @cp-trendscognsci.bsky.social Feature Review synthesizes a decade of brain–DNN comparisons, asking what they reveal about brain function across vision and language.
"The propagation of AI slop [...] is making science less trustworthy. But in parallel, AI enthusiasts are telling the world that the remedies should all be easy to automate, creating the impression that journals can not only catch more errors but also do it more efficiently and cheaply."
AI in scientific publishing: Slower, worse, and more expensive
There’s a saying in the management world, popularized by NASA administrator Daniel Goldin in the 1990s, that the goal of technological improvements is to make products faster, better, and cheaper. Alt...
science.org
I was lucky enough to spend a few days at the Kavli Institute of Theoretical Physics recently, observing an interdisciplinary group of scientists as they grappled with the limits of language in the face of biological complexity. My scene report: clairelevans.substack.com/p/report-fro...
Report from Goleta
An account of three days haunting the halls of the Institute for Theoretical Physics.
clairelevans.substack.com
How do brains plan actions towards goals? To get at this question we studied mice navigating complex mazes as goals changed on every trial 🧵 Work with @thomasakam.bsky.social @behrenstimb.bsky.social @kristorpjensen.bsky.social now on BioRxiv: www.biorxiv.org/content/10.6...
Come hang out with us! :)
Wanted: Postdoctoral research fellow in systems neuroscience. Determine how descending information from supraspinal centres influences spinal cord computations to drive continuous and flexible action switching during naturalistic behaviours. Apply by 21 May 2026. edin.ac/4tGDIVM
Huge congrats to @snierwetberg.bsky.social , David (not on BSky), and @maxwellxchen.bsky.social for their paper! They developed a mouse task in which relational structure can be isolated from cue identity and reward statistics. www.biorxiv.org/content/10.6... 🧠📈🧪 #neuroskyence @uclnpp.bsky.social
biorxiv.org
Delighted to share our discoveries about one of the brain's neurotransmitter systems: www.biorxiv.org/content/10.6... Together with colleagues at the @alleninstitute.org, we have learned a lot about a tiny cluster of neurons in the brainstem locus coeruleus (LC) that releases norepinephrine (NE). 1
biorxiv.org
How do the basal ganglia turn what you see into what you do? New preprint w/ @kenneth-harris.bsky.social, @flickerfusion.bsky.social & @carandinilab.net: we recorded across striatum, GPe & SNr in a Go/NoGo task. Striatum encodes which stimulus, GPe & SNr encode action. 🧵 biorxiv.org/content/10.6...
I wrote up something that's been in my head for a while: psychometric methods alone can't tell us what cognitive tasks and their indicators measure. Correlating indicators across tasks is circular when constructs are defined by those same correlations. osf.io/preprints/ps... 🧵1/3
Super excited to see the first paper from my PhD out! 🐭 Very satisfying to get to build an interpretable model of how the brain does a thing. A nice palette cleanser in the current sea of LLMs and deep ML.
Huge congratulations to Jes (not on Bsky) for her paper in @plos.org Computational Biology! A really elegant modelling study on how the brain discovers hidden structure and uses it to guide behaviour. @uclnpp.bsky.social @ucllifesciences.bsky.social 🧪 📈 🧠 journals.plos.org/ploscompbiol...
Thrilled to share our new paper, which shows that the relative timing of cholinergic and dopamine release dynamically gates whether dopamine acts as an RPE for in vivo plasticity and reinforcement learning. www.nature.com/articles/s41...
Acetylcholine demixes heterogeneous dopamine signals for learning and moving
Nature Neuroscience - Jang et al. measured dopamine and acetylcholine release in the striatum of rats performing a decision-making task and found that the relative timing of cholinergic and...
nature.com
I tracked every keyword in 22 years of Cosyne abstracts to map how computational neuroscience evolved — from Bayesian brains to neural manifolds to LLMs — and where it's heading next.
22 years of Brain Science: what CoSyNe tells us about the evolution of Neuroscience
Tracking the intellectual DNA of Computational and Systems Neuroscience through its flagship meeting
open.substack.com
Adaptive integration of model-based and model-free strategies in human reinforcement learning of reachable space https://www.biorxiv.org/content/10.64898/2026.03.02.709046v1
How does the brain generalize past experiences without confusing memories? 🧠 Our lab's newest preprint reveals a fundamental division of labor between the cortex and cerebellum that solves this problem. (Check out the cortex-cerebellum video below! 👇) 🧵
🧠 New year, new preprint! Why does motor learning involve multiple brain regions? We propose that the cortico-cerebellar system learns a "map" of actions where similar movements are nearby, while basal ganglia do RL in this simplified space. www.biorxiv.org/content/10.6...
Excited to head to CCN @cogcompneuro.bsky.social next week! Come checkout a project I've been working on with @mariaeckstein.bsky.social using interpretable AI to understand flexible behavior in my talk on Thursday morning and poster on Friday evening: 2025.ccneuro.org/poster/?id=A...
Poster Presentation
2025.ccneuro.org
Pleased to share our ICML Spotlight with @eberleoliver.bsky.social, Thomas McGee, Hamza Giaffar, @taylorwwebb.bsky.social. Position: We Need An Algorithmic Understanding of Generative AI What algorithms do LLMs actually learn and use to solve problems?🧵1/n openreview.net/forum?id=eax...
Excited to share this project specifying a research direction I think will be particularly fruitful for theory-driven cognitive science that aims to explain natural behavior! We're calling this direction "Naturalistic Computational Cognitive Science"
Our preprint is finally out! How can we understand the role of Behavioral Timescale Synaptic Plasticity in credit assignment? Does it fit into existing supervised and unsupervised learning frameworks? What theoretical gaps are still left unexplained? www.biorxiv.org/content/10.1...
biorxiv.org
Our work, out at Cell, shows that the brain’s dopamine signals teach each individual a unique learning trajectory. Collaborative experiment-theory effort, led by Sam Liebana in the lab. The first experiment my lab started just shy of 6y ago & v excited to see it out: www.cell.com/cell/fulltex...
Congrats to the fantastic Jess P for her new paper! She compared how feature Vs outcome focussed agents learn to solve contextual inference problems. She found that you need a balance of both to learn these tasks - and that this mix recapitulates pfc and hippocampal activity in rodent tasks!
Contextual inference through flexible integration of environmental features and behavioural outcomes https://www.biorxiv.org/content/10.1101/2025.05.28.656607v1