First Cosyne for the Mind Mechanisms lab! We’re broadly interested in world and goal models in the PFC and temporal lobe. Come chat to @AdamLoydHarris and Mingyu Zhu as they present some new findings tomorrow (Thursday) evening. #Cosyne2026…🧵1/6

Okay so, we just found that over 50 papers published at @Neurips 2025 have AI hallucinations I don't think people realize how bad the slop is right now It's not just that researchers from @GoogleDeepMind, @Meta, @MIT, @Cambridge_Uni are using AI - they allowed LLMs to generate hallucinations in their papers and didn't notice at all. It's insane that these made it through peer review👇

What is a 🧠 ripple? See our @NeuroCellPress perspective on ripple diversity and the grammar of memory replay: connecting key pieces from current work across the field. 👉🏼 sciencedirect.com:5037/scien…

If you’re at #SfN25 in San Diego, come check out my poster (Board KK3) today, 3–5 pm! It highlights findings from our recent Neuron paper on the diversity of hippocampal ripples: 🔗 cell.com/neuron/fulltext/S08… Come by to discuss ripples or just to say hi 😊

Look at the distribution of z-values from medical research!

This was the core of my PhD project and I feel very fortunate to have carried it out in such a great lab, learning immensely from @_vitorLdS and David. I also thank the reviewers, whose input greatly improved the paper. (11/11)

I’m pleased to share our new paper, “Hippocampal ripple diversity organizes neuronal reactivation dynamics in the offline brain”, out in @NeuroCellPress! With @_vitorLdS and David Dupret at @MRCBNDU, we show that diversity in ripple current profiles shapes reactivation dynamics

Excited to share we’ve been awarded the ERC StG 🎉 for our project ProSocial, on neural mechanisms of prosocial behavior in health & disease. Huge thanks to my group for their amazing work & to great colleagues for their support! Positions opening soon—reach out if interested!

🧵 1/8 The Illusion of Thinking: Are reasoning models like o1/o3, DeepSeek-R1, and Claude 3.7 Sonnet really "thinking"? 🤔 Or are they just throwing more compute towards pattern matching? The new Large Reasoning Models (LRMs) show promising gains on math and coding benchmarks, but we found their fundamental limitations are more severe than expected. In our latest work, we compared each “thinking” LRM with its “non-thinking” LLM twin. Unlike most prior works that only measure the final performance, we analyzed their actual reasoning traces—looking inside their long "thoughts". Our analysis reveals several interesting results ⬇️ 📄 machinelearning.apple.com/re… Work led by @ParshinShojaee and @i_mirzadeh, and with @KeivanAlizadeh2, @mchorton1991, Samy Bengio.

Sign up for this webinar with @olavoamaral about the Brazilian Reproducibility Initiative!

This marks my first-author contribution as part of the Maren Lab team! Our findings shed new light on the mechanisms underlying context-dependent extinction of learned fear. Huge thanks to @StephenMaren , @tugcettuna , and @MicTott for teamwork. biorxiv.org/content/10.1101/…

Huge reproducibility project fails to validate dozens of biomedical studies nature.com/articles/d41586-0…

Fantastic to be part of this unique conference in Pipa, Brazil. Great science, inspiring students and the weather wasn’t bad either. Massive thank you to @_vitorLdS Andressa Radiske, Caro Gonzalez and @RhythmicSpikes for organising. Onwards and upwards for the global south!

Thrilled to share our lab's first preprint on the neural mechanisms underlying helping behavior in mice! 🧠🐭 We show that dorsal hippocampal networks play a key role in rescuing a distressed peer: biorxiv.org/content/10.1101/…

RT @AndressaRadiske: Very grateful to have organized the Meeting on Neural Mechanisms of Cognitive Function in Northeast Brazil🇧🇷 with @M_C…

Check out my preprint on hippocampal ripple diversity, with @_vitorLdS and David Dupret at @MRCBNDU, where we reveal that distinct CA1 laminar profiles of ripples are associated with different reactivation dynamics: doi.org/10.1101/2025.03.11.6… #hippocampus

New preprint about SWRs, this time in HUMANS! 🤩 With @MaslarovaAnna & JiyunShin, we’ve (i) developed a pipeline to analyze SWRs in intracranial EEG, and (ii) created ripmap, an open-source toolbox that allows versatile inspection and curation of events 🧵 biorxiv.org/content/10.1101/…