Tim Lawn

@timlawn.bsky.social

Neuromodulatory systems | Networks | Multimodal neuroimaging Postdoctoral researcher at University of Oxford Previously @MGHMartinos @KCL timlawn.github.io/

If an action results in error, each neuron requires an individualized teaching signal that guides change in its output. This is the credit assignment problem of learning. Are there neurons in the brain that can compute such a sophisticated teaching signal? Yes. www.biorxiv.org/content/10.6...

Climbing fibers encode the gradient of a loss function for the cerebellum

Neurons in the brain are often many synapses away from motoneurons, yet if a movement results in error, each distant neuron needs a teacher that considers its specific contribution to production of th...

biorxiv.org

1/ What can resting-state neuroimaging offer cognitive and translational neuroscience🧠? Turns out: a lot! 🧵 Long in the making, short in the reading: “Unlocking spontaneous cognition in the age of data science" is out now in @natrevneuro.nature.com rdcu.be/ftWBh

Unlocking spontaneous cognition in the age of data science

Nature Reviews Neuroscience - Spontaneous brain activity is experimentally unconstrained. Embracing this freedom unlocks rich opportunities beyond task-based and naturalistic paradigms, the...

rdcu.be

If you are considering a Marie Curie for the September deadline that fits in the lab (depression, measurement, time-series, complex systems, history of psychiatry), please don't hesitate to send me an email if you'd like to work with me :).

Excited to be heading to #cpconf in New Haven and looking forward to what looks like a really brilliant programme! We have some exciting new work being presented by our brilliant students and postdocs 👇👇👇

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Good news everyone! 🎉 The new version 3.0 of graph-tool is just out with major improvements! See below. graph-tool.skewed.de graph-tool is a comprehensive and efficient Python library to work with networks, including structural, dynamical, and statistical algorithms, as well as visualization. 1/N

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Super excited to share a new preprint! We asked a simple-but-big question: What changes in the brain when someone becomes an expert? Using chess ♟️ + fMRI 🧠 + representational geometry & dimensionality 📈, we ask: 1️⃣ WHAT information is encoded? 2️⃣ HOW is it structured? 3️⃣ WHERE is it expressed? 1/n

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If you're interested in imaging the brainstem and haven't already joined this COST action working group you're missing out... 👀

Imaging Brainstem Health | COST Action 24118@ca24118.bsky.social · last mo.

Great to see our COST Action Imaging Brainstem Health members at @ohbmofficial.bsky.social in Bordeaux, with excellent posters and symposia on brainstem research. Want to join us? www.uibk.ac.at/en/projects/... #OHBM2026 #Brainstem #Neuroimaging #Neuroscience #COSTAction #ImagingBrainstemHealth

🧠 New work showing prominent and widespread 𝘪𝘯 𝘷𝘪𝘷𝘰 pre-synaptic terminal reductions in people with schizophrenia.🧠 nature.com/articles/s41... Strongest effects in left hemisphere, but synaptic loss didn't track with MRI grey matter alterations, but did align with..👇1/4

Widespread synaptic density loss in schizophrenia follows molecular and network architecture - Molecular Psychiatry

Molecular Psychiatry - Widespread synaptic density loss in schizophrenia follows molecular and network architecture

nature.com

New preprint! We show low arousal states promote hippocampal ripple genesis in sleep and wake. This bridges rodent work, where ripples predominate during sleep, with human studies reporting ripples during active behavior, identifying low arousal as a common mechanism www.biorxiv.org/content/10.6...

Arousal state modulates human hippocampal ripples

Hippocampal ripples are transient, high-frequency oscillations linked to memory replay and consolidation. Ripples are well-characterized in rodents to occur during periods of behavioral inactivity (i....

biorxiv.org

🚨 New paper 🚨 Did you ever wonder if the spatial similarity of receptor PET maps matters for their use in molecular-informed fMRI analyses? Here we systematically investigate this. 🧵

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I am recruiting a postdoctoral researcher and a PhD student, funded by a new ERC grant. The grant focuses on the role of the hippocampus in visual perception, using 7T fMRI (hippocampal subfields, cortical layers) and MEG+iEEG. The intended start dates for both positions are in early 2027. 🧠🟦 1/3

New preprint from the team - what's the role of frontal cortex - LPFC & MCC - in learning about progress towards goals? Data from the checking project collected by Fred Stoll. New analyses by Xiaoqi Xu. With Matteo di Volo, Manu Procyk, & skytorial from @nilskolling.bsky.social below

Nils Kolling@nilskolling.bsky.social · last mo.

New preprint alert! doi.org/10.64898/202... Throughout life, we are often told to persist in the pursuit of our long term goals. However, the most important factor to consider in the real world for whether to continue pursuit or abandon one's goal is knowing how much progress you are making.

Look how far we've come in just a few years! We're fast as well! It turns out, recruiting reviewers is much easier when they're not being used as free labor for massively profitable publishers Support free-to-publish and Open Access science by submitting to Open Mind today! direct.mit.edu/opmi

Open Mind | MIT Press

direct.mit.edu

Llanguagemit.bsky.social@languagemit.bsky.social · 2mo ago

—— Open Mind is MIT Press’s Diamond Open Access Cognitive Science journal. We now have our first Impact Factor: 2.9 as of June 2026 Submit your papers to Open Mind direct.mit.edu/opmi

Our first Impact Factor is 3.0 — an important milestone for a new journal. As with most new journals, the first IF is affected by the smaller publication volume in the launch year. Latest citation data are encouraging, and the journal’s IF is set to rise in 2027.

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We are delighted to announce that Shella Keilholz will shortly become the Editor-in-Chief of Imaging Neuroscience, following the selection process described in our Author Guide. Steve Smith is stepping down as EiC after serving for three years, following the transition from NeuroImage.