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Posts by David Behery

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Endogenous precision of the number sense A theory of efficient coding wherein the precision of representations is endogenous, task-dependent, and prior-dependent predicts scaling laws for imprecision and is supported by numerosity perception...

The "Version of Record" of my paper with Mike Woodford is finally there. I am very glad with this paper that points to new laws of psychophysics, which we derived from a carefully considered principle of endogenous efficient coding.

15 hours ago 12 5 1 0

New work w/ Zach Kelso and @madeleinecsnyder.bsky.social
www.biorxiv.org/content/10.6...
Our negative results on classical conditioning in planarian flatworms. This was surprising, given the long history of work (including sensational findings of memory transfer and retention through decapitation).

1 day ago 79 29 5 4
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How about the cat licking itself lol?

2 days ago 2 0 1 0
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New paper in PBR: "Working memory’s pointer system is governed by physical objecthood, not spatiotemporal information"
rdcu.be/fd2tY

Without valid WM pointers, we miss OBVIOUS changes in visible items; the study shows that this "resetting" process is all about objects and not spatiotemporal change!

2 days ago 34 8 1 0

you shouldn’t learn about bands from shady TikTok manipulation, you should learn about bands by hanging out with a girl you like but are also extremely afraid of

1 week ago 7963 1620 89 209
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"And again I say unto you, It is easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of God"

2 weeks ago 7 1 0 0
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‘Backrooms’ and the Rise of the Institutional Gothic A new spin on an old genre replaces flesh-and-blood monsters with the mundanity of modern bureaucracy.

How did “The Backrooms” go from an obscure creepypasta to an A24 film? For @shirachess.bsky.social, its rise reflects the “liminal aesthetic” and a new Institutional Gothic of corporate dread.

2 weeks ago 46 13 0 2
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Just posted an update of this study, where we show how the receptive fields of number-encoding neural populations shift and rescale with the prior — "distributed range adaptation" — in line with (dynamic) efficient coding, and predictive of behavior. Check it out!
www.biorxiv.org/content/10.1...

3 weeks ago 26 6 0 0
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Check out a new paper in Nature Communications Biology with @dianadima.com and Yalda Mohzenzadeh using fMRI-EEG fusion to reveal how brain responses to action videos and sentences unfold across the visual system over time www.nature.com/articles/s42...

1 month ago 19 5 0 1
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What does it mean for culture to 'shape' cognition? pubmed.ncbi.nlm.nih.gov/41807136/ "Culture can (i) privilege some cognitive processes, while leaving alternative processes intact; (ii) prune unused alternative processes (iii) produce new cognitive processes; or (iv) have no effect"

1 month ago 20 6 1 1

After several years of work, my lab is starting to put out our first papers on learning in a unicellular organism (Stentor coeruleus).

Here we show evidence for a form of associative learning in Stentor:
www.biorxiv.org/content/10.6...

1 month ago 178 58 5 7
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Infant brain categorizes common objects by two months of age Brain activity patterns in the ventral visual cortex appear to distinguish images across 12 categories, including birds and trees, fMRI scans suggest.

Functional MRI scans of more than 100 2-month-old infants suggest that they are capable of distinguishing among a variety of different objects. The findings challenge perceptions of cognitive development as a gradual process.

By @helenak.bsky.social

www.thetransmitter.org/cognitive-ne...

1 month ago 23 12 1 0
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New preprint

"Human-Like Coarse Object Representations in Vision Models"

arxiv.org/pdf/2602.12486

2 months ago 38 9 1 0
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Very happy to see "Pretending not to know reveals a capacity for model-based self-simulation", a collaboration with @chazfirestone.bsky.social and @ianbphillips.bsky.social, out in Psych. Science!

journals.sagepub.com/doi/10.1177...

🧵

2 months ago 67 30 1 3

My lab is looking to recruit 1-2 paid summer interns to do wet lab work on learning in a unicellular organism (Stentor coeruleus). You can apply here:
forms.gle/b47WpSobjFjo...

2 months ago 30 27 1 1
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Learning Abstractions for Hierarchical Planning in Program-Synthesis Agents Humans learn abstractions and use them to plan efficiently to quickly generalize across tasks -- an ability that remains challenging for state-of-the-art large language model (LLM) agents and deep rei...

A new and improved version of TheoryCoder, which learns to play video games in a human-like way by synthesizing both high-level abstractions and a low-level model of game mechanics:
arxiv.org/abs/2602.00929

2 months ago 40 11 2 1
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Trump Drops Demand for Cash From Harvard After Stiff Resistance

Fighting wins!
www.nytimes.com/2026/02/02/u...

2 months ago 43 12 0 2

What's going on in aphantasia? Balaban and I recently argued it might be 'broken rendering'; but then why do normies bother rendering anything?

Monzel, Zeman & co wrote an interesting response:

www.cell.com/trends/cogni...

...and this is our response response:

www.cell.com/trends/cogni...

2 months ago 14 2 1 0
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now accepted at ICLR! 🐺🥳🐺

arxiv.org/abs/2506.20666

2 months ago 40 9 0 0
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Not playing around: Why neuroscience needs toy models Amid the rise of billion-parameter models, I argue that toy models, with just a few neurons, remain essential—and may be all neuroscience needs.

Amid the rise of billion-parameter models, I argue that toy models, with just a few neurons, remain essential—and may be all neuroscience needs, writes @marcusghosh.bsky.social.

#neuroskyence

www.thetransmitter.org/theoretical-...

3 months ago 61 26 4 3
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Building Community, Spreading Joy Even as Atte Kadoma and Isaias Ghezae are immersed in demanding PhD programs at Harvard, being  resident advisor brings balance to their lives and enriches both their student experience and their…

Even as Atte Kadoma and Isaias Ghezae are immersed in demanding PhD programs at Harvard, being resident advisor brings balance to their lives and enriches both their student experience and their scholarly pursuits.

4 months ago 2 1 0 0

Super great opportunity!

4 months ago 1 0 0 0
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new: Eric Bigelow @ericbigelow.bsky.social suggests the 2 main ways of controlling LLMs (prompting & steering) can be understood as changing model beliefs (as in Bayesian belief updating)

"Belief Dynamics Reveal the Dual Nature of In-Context Learning & Activation Steering"

arxiv.org/pdf/2511.00617

4 months ago 27 10 1 0

Thanks Alex for the opportunity to work on this project!

4 months ago 3 0 1 0
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Environmental representations in mouse hippocampal CA1 reflect the predictive structure of navigation Predictive theories of cognitive mapping propose that these representations encode the predictive relationships among contents as experienced by the n…

Another new paper from the lab: Predictive theories like the SR imply that navigators who navigate differently should have cognitive maps which differ in predictable ways. Here we show that this holds in mouse hippocampal CA1.

www.sciencedirect.com/science/arti...

4 months ago 60 22 3 0
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"abandoned teddy bears" category on wikimedia commons

4 months ago 604 115 15 31
OSF

Another fun project from @yangxiang.bsky.social. She asks the question: do people assign responsibility to personality traits in the same way that they assign reponsibility to people? The answer: sort of!

osf.io/preprints/ps...

4 months ago 22 7 0 0
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Dr. Roosevelt is the overarching antagonist of Naoki Urasawa's 2003 manga thriller series Pluto and its 2023 anime adaptation, both of which are a reimagining adaptation of The Greatest Robot in the World arc of Astro Boy.

He is an advanced supercomputer that takes the form of an immovable brown teddy bear that speaks with a child-like voice.

Dr. Roosevelt is the overarching antagonist of Naoki Urasawa's 2003 manga thriller series Pluto and its 2023 anime adaptation, both of which are a reimagining adaptation of The Greatest Robot in the World arc of Astro Boy. He is an advanced supercomputer that takes the form of an immovable brown teddy bear that speaks with a child-like voice.

5 months ago 3 0 0 0
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Officially out in the current issue of Trends in Cognitive Sciences:

"Physics versus graphics as an organizing dichotomy in cognition"

www.cell.com/trends/cogni...

5 months ago 60 15 2 2