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Posts by Marcelo Mattar

Hm, not sure why. Maybe email at marcelo.mattar@nyu.edu?

3 hours ago 0 0 0 0

Write me a DM if you'd like a pdf of the article.

4 hours ago 0 0 1 0
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Planning in the Brain: It's Not What You Think It Is The neuroscience of planning has long been analogized to search algorithms in artificial intelligence (AI), which simulate future actions to guide immediate choices. We argue that advances in both neu...

New Annual Review with @nathanieldaw.bsky.social: “Planning in the Brain: It's Not What You Think It Is.” We argue that the brain's 'planning' machinery is mostly used for learning from simulated experience, and that thinking prospectively at decision time is just one special case of this process.

10 hours ago 84 32 3 2

Nice, congrats!

1 month ago 0 0 0 0
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BAMB! 2026 | Barcelona Summer School for Advanced Modeling of Behavior Intensive training for experienced researchers in cognitive science, computational neuroscience and neuro-AI. Five interconnected modules, expert faculty, hands-on projects. July 12-23, 2026.

24-Hour Final Call for BAMB! 2026 ⏳

Join us in Barcelona (July 12–23) and learn from our expert faculty:

@meganakpeters.bsky.social
@marcelomattar.bsky.social
@khamascience.bsky.social
@thecharleywu.bsky.social

Apply now:
www.bambschool.org

1 month ago 10 9 1 0

1/ New preprint out! “Control of cortical population activity with patterned microstimulation.” We show that brief training with multi-electrode stimulation pulses is enough to steer prefrontal population activity along desired trajectories in awake macaques. tinyurl.com/3d6kv26w

1 month ago 20 9 1 2
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio

Come be our colleague! The Center for Neural Science at NYU is accepting applications at the Assistant Professor level in computational neuroscience and/or neural engineering apply.interfolio.com/182074

1 month ago 18 13 0 0
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Dileep George joins Astera to lead its neuro-inspired AGI effort Dileep George is joining Astera as Head of AI, leading our AGI research division. Working alongside our Chief Scientist Doris Tsao, he and the team will explore novel, brain-inspired computational arc...

News! I've joined the Astera Institute to lead its neuroscience based AGI research. Backed by $1B+ commitment over the coming decade, my team will explore novel, brain-inspired architectures and algos toward safe, efficient human-like AGI, working alongside Doris Tsao. 1/

astera.org/dileep-georg...

1 month ago 84 6 13 2
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Very cool! Congratulations!

1 month ago 1 0 1 0
Book cover. A silhouette of a person's head filled with colorful geometric shapes—perhaps symbolizing cognitive resources or deployment thereof. The style is attractive and modern, if generic.

text: 
The Rational Use of Cognitive Resources
Falk Lieder, Frederick Callaway, Thomas L. Griffithts

Book cover. A silhouette of a person's head filled with colorful geometric shapes—perhaps symbolizing cognitive resources or deployment thereof. The style is attractive and modern, if generic. text: The Rational Use of Cognitive Resources Falk Lieder, Frederick Callaway, Thomas L. Griffithts

I'm excited to announce that I had my first (co-authored) book published today! "The Rational Use of Cognitive Resources" with Falk Lieder and Tom Griffiths (@cocoscilab.bsky.social ). You can read it for free! (see thread)

2 months ago 147 45 2 0

Excited to launch Principia, a nonprofit research organisation at the intersection of deep learning theory and AI safety.

Our goal is to develop theory for modern machine learning systems that can help us understand complex network behaviors, including those critical for AI safety and alignment.

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2 months ago 93 28 1 1
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BAMB! 2026 | Barcelona Summer School for Advanced Modeling of Behavior Intensive training for experienced researchers in cognitive science, computational neuroscience and neuro-AI. Five interconnected modules, expert faculty, hands-on projects. July 12-23, 2026.

Applications for BAMB! 2026 are officially open!

Join us in Barcelona (July 12–23) to master the art of behavioral modeling with our incredible faculty:

@meganakpeters.bsky.social
@marcelomattar.bsky.social
@khamascience.bsky.social
@thecharleywu.bsky.social

Apply now here: www.bambschool.org

2 months ago 27 27 1 3
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Building compositional tasks with shared neural subspaces Nature - The brain can flexibly perform multiple tasks by compositionally combining task-relevant neural representations.

Thrilled that my paper is out in the @nature.com. We explored how the brain builds complex tasks by compositionally combining simpler sub-task representations. The brain flexibly performs multiple tasks by dynamically reusing neural subspaces for sensory inputs and motor actions

rdcu.be/eRVUk

2 months ago 131 47 4 1

Amazing opportunity!

2 months ago 3 0 0 0

Amazing postdoc opportunity!

2 months ago 6 1 1 0
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Episodic memory facilitates flexible decision-making via access to detailed events - Nature Human Behaviour Nicholas and Mattar found that people use episodic memory to make decisions when it is unclear what will be needed in the future. These findings reveal how the rich representational capacity of episod...

Our experiences have countless details, and it can be hard to know which matter.

How can we behave effectively in the future when, right now, we don't know what we'll need?

Out today in @nathumbehav.nature.com , @marcelomattar.bsky.social and I find that people solve this by using episodic memory.

2 months ago 131 49 7 2

How terrific! Free in person summer school for future PhDs who want more quantitative training before grad school; happening at one of the best places in the world to pursue it (the Gatsby at UCL).

3 months ago 17 7 0 0
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A frontal motor circuit for economic decisions and actions Flexible behaviour requires transforming abstract cognitive representations, such as value preferences, into concrete motor actions. During economic decision-making, individuals evaluate options to gu...

New preprint from the lab!
A frontal motor circuit for economic decisions and actions:
www.biorxiv.org/content/10.6...

We use a novel task in mice, cortex-wide imaging and optogenetics, NPX recording and modelling to reveal a circuit mechanism that transforms abstract decisions to spatial actions.

4 months ago 77 24 5 2

Thrilled to start 2026 as faculty in Psych & CS
@ualberta.bsky.social + Amii.ca Fellow! 🥳 Recruiting students to develop theories of cognition in natural & artificial systems 🤖💭🧠. Find me at #NeurIPS2025 workshops (speaking coginterp.github.io/neurips2025 & organising @dataonbrainmind.bsky.social)

4 months ago 105 27 4 1
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Tiny recurrent neural networks for discovering cognitive strategies — a Tools of the Trade article by Li Ji-An

#neuroscience #neuroskyence

www.nature.com/articles/s41...

4 months ago 20 4 0 0

Great opportunity for PhD applicants this year!

4 months ago 4 3 0 0

Do you want to fund AI alignment research?

The AISI Alignment Team and I have reviewed >800 Alignment Project Applications from 42 countries, and we have ~100 that are very promising. Unfortunately, this means we have a £13-17M funding gap! Thread with details! 🧵

4 months ago 6 2 1 0
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Building compositional tasks with shared neural subspaces - Nature The brain can flexibly perform multiple tasks by compositionally combining task-relevant neural representations.

Task learning is compositional, so would behavior be!
www.nature.com/articles/s41...

4 months ago 41 9 0 0
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a red building on UPENN's campus photographed during the fall

a red building on UPENN's campus photographed during the fall

the Philadelphia skyline, with clear skies and autumn trees

the Philadelphia skyline, with clear skies and autumn trees

starting fall 2026 i'll be an assistant professor at @upenn.edu 🥳

my lab will develop scalable models/theories of human behavior, focused on memory and perception

currently recruiting PhD students in psychology, neuroscience, & computer science!

reach out if you're interested 😊

4 months ago 227 45 25 3

Yay, congrats Tyler!

4 months ago 1 0 1 0
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A habit and working memory model as an alternative account of human reward-based learning Nature Human Behaviour - In this study, Collins proposes an alternative dual-process (working memory and habit) model of reinforcement learning in humans.

My paper is out!
Computational modeling of error patterns during reward-based learning show evidence that habit learning (value free!) supplements working memory in 7 human data sets.
rdcu.be/eQjLN

5 months ago 133 49 2 3
Sydney Levine - Open Positions Graduate Students (PhD program) I will be accepting PhD students through the NYU psychology department for the current application cycle (for admission in Fall 2026). My lab is joint between the Co...

I'm recruiting a grad student! My lab at NYU (psych dept) studies the computational basis of moral cognition and aims to build AI systems that are aligned with human values. Now admitting a PhD student for Fall 2026. Apps due 12/1. sites.google.com/corp/site/sy...

5 months ago 38 21 1 1
Interactive Cognition Lab | USC Interactive Cognition Lab at USC, led by principal investigator, Dr. Nina Rouhani.

I will be recruiting 🌟PhD students🌟 for my newish lab! If you're interested in learning & memory mechanisms applied to individual, interactive & collective behavior using computational modeling, real-world experiments and fMRI, email me! RTs much appreciated 🙏 rouhanilab.com

5 months ago 92 79 1 2

Very cool! Looking forward to seeing what work will come out of this great team!

6 months ago 1 0 0 0