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Armin Lak

@laklab.bsky.social
1.6K followers 890 following 84 posts

Neuroscientist investigating neuronal bases of learning. Prof at Oxford University. www.laklab.org

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Reposted by Armin Lak
Naoshige Uchida @naoshigeuchida.bsky.social · 25/09/2026
Our new work on how belief states could be implemented by attractor-like dynamics in the brain -- an effort started in Starkweather et al. (2017) in collaboration with Sam Gershman, and Jay Hennig, now joined by Scott Linderman! Thank you to all collaborators!
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Armin Lak @laklab.bsky.social · 21/09/2026
One of my science dreams came true today in the lab 🤩
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Reposted by Armin Lak
Steve Fleming @smfleming.bsky.social · 16/09/2026
📖 New review out today in @natrevneuro.nature.com: Towards an integrative neuroscience of metacognition 🧠🧪 Full-text link to the paper is here: rdcu.be/9YK3mF7dYhFa
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Armin Lak @laklab.bsky.social · 16/09/2026
What a beautiful set of discoveries here
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Reposted by Armin Lak
Naoshige Uchida @naoshigeuchida.bsky.social · 15/09/2026
This is a joint junior faculty search across several life sciences Departments at Harvard, including my Department of Molecular and Cellular Biology. Please apply!
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Reposted by Armin Lak
Dave Root @neuronroot.bsky.social · 18/08/2026
On the cover of Science Signaling today, the final version of our initial investigation of functional differences between VTA glutamate-dopamine, nonglutamate-dopamine, and glutamate-only neurons www.science.org/doi/10.1126/...
science.org
Distinct properties of glutamate-dopamine, nonglutamate-dopamine, and glutamate-only ventral tegmental area neurons
Glutamate cotransmission predicts the behavioral functions and characteristics of dopaminergic neurons in the VTA.
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Reposted by Armin Lak
Neuron @cp-neuron.bsky.social · 31/07/2026
dlvr.it
Single-neuron resolution mapping of dopaminergic connectivity across development, adulthood, and degeneration
Using a novel intersectional genetic strategy for sparse neuronal labeling, Grossouw, Heijmink, et al. reconstruct individual midbrain dopamine neurons throughout development, adulthood, and degeneration. They reveal previously unrecognized morphological diversity, developmental wiring principles, and subtype-specific connectivity, providing a comprehensive framework for understanding how dopaminergic circuits are assembled, maintained, and disrupted.
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Reposted by Armin Lak
Reza Shadmehr @rezashadmehr.bsky.social · 28/07/2026
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...
biorxiv.org
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...
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Reposted by Armin Lak
Sainsbury Wellcome Centre @sainsburywellcome.bsky.social · 24/07/2026
How does sleep consolidate muscle memories? New research from @mstephensonjones.bsky.social lab & @gatsbyucl.bsky.social in @natneuro.nature.com reveals that motor-skill memories are replayed in the striatum during sleep, independently of the hippocampus. www.sainsburywellcome.org/blog/muscle-...
sainsburywellcome.org
Muscle memories: how does sleep produce consolidation? | Sainsbury Wellcome Centre
Sleep not only makes us feel better, but it’s vital for helping us form memories and learn new skills. For many years, neuroscientists have studied how the brain consolidates episodic memories during ...
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Reposted by Armin Lak
Bilal Haider @haiderlab.bsky.social · 08/07/2026
Our new paper on how mice become experts in a visual spatial attention task - after just 18 days of training! 🐭👁️🧠🔦 Lots of new findings made possible by standardized behavioral procedures and a fantastic team of 👩‍🔬👨‍🔬. Open access, all data + code posted. Check it out 👇
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Armin Lak @laklab.bsky.social · 01/07/2026
on the 2nd day pm time at #fens2026 you think of skipping the posters & enjoying Barcelona. BUT the temptation of seeing our posters will keep you in the poster hall 😆 All new & all on frontal cortex in learning by Sandra Tan, Marko Tvrdic, Yuliia Shevchuk & @huriyeatg.bsky.social et al, No94,95,96
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Armin Lak @laklab.bsky.social · 22/05/2026
Awesome results from @fluketc.bsky.social @dudman.bsky.social and team, both for dopamine field and for all that train animals in tasks www.science.org/doi/10.1126/...
science.org
Reward magnitude determines reinforcement learning efficiency
Standard animal learning studies minimize individual reward magnitudes to maximize the repetitions of reinforced behaviors. We investigated how reward magnitude influences initial learning across five...
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Armin Lak @laklab.bsky.social · 13/05/2026
big fomo for @dopaminesociety.bsky.social next week but excited that @jessicamoretti.bsky.social and @matthiasfritsche.bsky.social from the lab attending to present what we have been up to
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Reposted by Armin Lak
YanFeng Zhang @yanfengzhang.bsky.social · 11/05/2026
Excited to share our new paper published in Nature Communications! rdcu.be/fh6ty We show that deep layers of the superior colliculus identify the salience of conditioned visual stimuli and drive dopamine responses during classical conditioning.
rdcu.be
The superior colliculus gates dopamine responses to conditioned stimuli in visual classical conditioning
Nature Communications - Neural mechanisms underlying the ability to identify salient events are not fully understood. This study identifies the superior colliculus as a key brain region that...
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Armin Lak @laklab.bsky.social · 08/05/2026
Very interesting stuff here
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Armin Lak @laklab.bsky.social · 24/04/2026
We have new a new doctor in the lab 🍾🍾🎉Congratulations @neurorussell.bsky.social for successful viva today at Oxford @oxforddpag.bsky.social
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Armin Lak @laklab.bsky.social · 13/04/2026
Amazing study and the coolest results (from my point of view!) is that LC norepinephrine neurons projecting to the frontal cortex encode reward prediction error
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Carlos Brody @carlosbrody.bsky.social · 12/04/2026
I am livid that after less than a day, Vance et al are back empty-handed. "Marathon" talks?? They didn't even sleep on it and try again! Many thousands of lives, the world economy and world hunger, and more, hang in the balance, and they stopped trying after less than a day?? What a rotten failure.
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Carolina Rezaval @crezaval.bsky.social · 09/04/2026
We’re recruiting! Exciting opportunities in our lab supported by a @wellcometrust.bsky.social Discovery Award. • Postdoctoral researchers • Research assistant/PhD students Join us to study how neural circuits drive decision-making. Deadline 26/04 Learn more and Apply here: rezavallab.org
rezavallab.org
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Bita Moghaddam @bita137.bsky.social · 02/04/2026
100+ year old Pasteur Institute in Tehran was a premier infectious disease research institute and vaccine manufacturer It is a reason Iranian kids like me born in 60s had access to measles vaccines soon after they were developed in the west
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Armin Lak @laklab.bsky.social · 15/03/2026
bombs falling to plant democracy! , but instead fertilising despair and taking lives… writing right after hearing that a few days ago bombs landed some 50 m from my father’s office ….
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Matteo Carandini @carandinilab.net · 11/02/2026
Actually the view from my office just got more interesting, as the official celebrations of the 200th anniversary now include a pirate projection saying "Free Palestine". Regardless of opinions, may UCL enjoy 200 more years of freedom of speech.
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Armin Lak @laklab.bsky.social · 30/01/2026
RA job alert. We are looking for a fearless experimentalist to join our experiments on cortical neuromodulators during visually guided learning, lead by @michael-lynn.bsky.social . Opportunity to learn 2p imaging, design and conduct experiments. RT plz. Apply here: my.corehr.com/pls/uoxrecru...
my.corehr.com
Job Details
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Reposted by Armin Lak
Simon Schultz @simonschultz.bsky.social · 27/01/2026
There is a new Postdoctoral Research Associate position available in my group, to work on computational analysis of human neuroimaging workflows to develop robust, interpretable and scalable biomarkers of cognitive brain health. Closing date 10th Feb 2026. www.imperial.ac.uk/jobs/search-...
imperial.ac.uk
Description
Please note that job descriptions are not exhaustive, and you may be asked to take on additional duties that align with the key responsibilities ment...
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Reposted by Armin Lak
Blake Russell @neurorussell.bsky.social · 26/01/2026
Out today in Neurophotonics, we show that cross-talk between the imaging laser and opsin in all-optical experiments can affect response dynamics beyond what has been accounted for. Imaging conditions subthreshold for evoking spikes can accelerate opsin desensitization: doi.org/10.1117/1.NP...
doi.org
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Steve Fleming @smfleming.bsky.social · 20/01/2026
We're running a 5th edition of the always-exciting UCL Summer School on Consciousness and Metacognition this year, 8th-10th July 2026 in London. Accommodation and travel expenses are covered. For more information and how to apply, check out metacoglab.org/summer-schoo...
metacoglab.org
Summer School - About — the MetaLab
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Armin Lak @laklab.bsky.social · 14/01/2026
This one from @kepecslab.bsky.social and Song Hu lab is awesome: www.nature.com/articles/s41...
nature.com
Client Challenge
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Armin Lak @laklab.bsky.social · 05/01/2026
New preprint. We show that in addition to reward prediction errors (RPEs), dorsal striatal dopamine signals encode sensory prediction errors (SPEs), the difference between sensory prior & observed stimulus. www.biorxiv.org/content/10.6...
biorxiv.org
Dorsal striatal dopamine integrates sensory and reward prediction errors to guide perceptual decisions
Perceptual decisions are shaped by expectations about sensory stimuli and rewards, learned through sensory and reward prediction errors. Dopamine is known to convey reward prediction errors that shape...
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Reposted by Armin Lak
Reza Shadmehr @rezashadmehr.bsky.social · 08/12/2025
We tend to think of neurons as either excitatory or inhibitory, but some neurons chemically inhibit their downstream targets while electrically exciting their neighbors. What is gained by having an inhibitory neuron excite its neighbor? www.biorxiv.org/content/10.6...
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Reposted by Armin Lak
Vincent Bonin @boninlab.bsky.social · 25/11/2025
Please repost widely. @vanderhaeghenp2.bsky.social and I are hiring a postdoc with expertise in sensory physiology and in vivo circuit imaging/manipulation. The project centers on human-specific brain development and SYNGAP1-related disorders. Call closing soon—apply ASAP jobs.vib.be/j/119852/pos...
jobs.vib.be
Postdoctoral Fellow / PhD Student in Systems Neuroscience - VIB
The Laboratory of Cortical Information Processing | Vision to Action at NERF (www.nerf.be) invites applications for a Postdoctoral Fellow or PhD Student to work on a new research project funded by the...
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Armin Lak @laklab.bsky.social · 24/11/2025
concise and informative review article on corticostriatal pathways in sensory process by @giladsilberberg.bsky.social et al . I find myself looking into it frequently and learn/cross check a new thing every time : www.sciencedirect.com/science/arti...
sciencedirect.com
Corticostriatal pathways for bilateral sensorimotor functions
Corticostriatal pathways are essential for a multitude of motor, sensory, cognitive, and affective functions. They are mediated by cortical pyramidal …
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Armin Lak @laklab.bsky.social · 13/11/2025
We look forward to discussing these with you all #SfN25, #SfN2025
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Reposted by Armin Lak
Matteo Carandini @carandinilab.net · 12/11/2025
Our lab is looking for a postdoc! We have interesting projects and cutting-edge techniques such as Neuropixels Opto, Light Beads Microscopy and more. We would be delighted to receive your application. Deadline is 25 November 2025. More info here: www.ucl.ac.uk/cortexlab/po...
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Armin Lak @laklab.bsky.social · 16/10/2025
Out today at Neuron, our experiments show that frontal cortical representation of economic variables is jointly determined by spatial organization and downstream connectivity of neurons, revealing a structured, multi-scale code for economic variables. www.cell.com/neuron/fullt...
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Armin Lak @laklab.bsky.social · 12/10/2025
All-optical experiments are great but @neurorussell.bsky.social found that opsin desensitization due to cross-talk between the imaging laser and the opsin causes major issues. These can be ameleorated with long inter-stimulus intervals & short imaging doses. All here: www.biorxiv.org/content/10.1...
biorxiv.org
Desensitization of opsin responses during all-optical interrogation depends on imaging parameters
Significance The combination of two-photon calcium imaging and two-photon optogenetic stimulation, termed all-optical interrogation, provides spatial and temporal precision when recording and manipula...
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Reposted by Armin Lak
Laurence Hunt @lhuntneuro.bsky.social · 26/09/2025
Looking for a PhD next year? Want to come and work on the next generation of OPM-MEG/EEG biomarkers in computational psychiatry? Apply for our MRC iCase studentship with @mkflugge.bsky.social, collabs with @lilweb.bsky.social + industrial placement at P1Vital: www.medsci.ox.ac.uk/study/gradua...
medsci.ox.ac.uk
Development of robust, single-subject markers of predictive inference for computational psychiatry
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Armin Lak @laklab.bsky.social · 20/09/2025
Beautiful and clear results showing that temporal difference error calculation is hardwired in the dopamine/striatum mircocircuits: www.biorxiv.org/content/10.1... from @malcolmgcampbell.bsky.social and @naoshigeuchida.bsky.social
biorxiv.org
A hardwired neural circuit for temporal difference learning
The neurotransmitter dopamine plays a major role in learning by acting as a teaching signal to update the brain's predictions about rewards. A leading theory proposes that this process is analogous to...
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Reposted by Armin Lak
CMC Unit @cmc-unit.bsky.social · 18/09/2025
In our Learning Club @cmc-lab.bsky.social today (Aug 18, Thu, 2pm CET), Samuel Liebana will tell us about his paper (www.cell.com/cell/fulltex... [joint work w/ @saxelab.bsky.social & @laklab.bsky.social]. Want to attend, send an empty email to virtual-talk-link-request@cmclab.org to get the link!
cell.com
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Armin Lak @laklab.bsky.social · 09/09/2025
Concise and informative highlight on our recent paper, thanks to Seung Chan Kim, Sehwan Kim & Sang Ryong Kim. www.nature.com/articles/s41...
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Andrew Tan @andrewtanyongyi.bsky.social · 17/08/2025
Hagai Bergman - whose celebrated work was a critical step in identifying the subthalamic nucleus as a target for deep brain stimulation in Parkinson's disease - & Josh Goldberg, both of the Hebrew University of Jerusalem, helping to stop traffic (posted by Josh on X): Stop the war! Bring them home!
From https://x.com/GoldbergLab/status/1956980620124475611
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Peter Kok @peterkok.bsky.social · 08/08/2025
We are recruiting a new PI at the FIL @imagingneuroucl.bsky.social, Associate or Full Professor. This is an amazing place to do cognitive neuroscience, in the heart of London. If you or someone you know might be interested, please pass it on. #neuroskyence www.ucl.ac.uk/work-at-ucl/...
ucl.ac.uk
UCL – University College London
UCL is consistently ranked as one of the top ten universities in the world (QS World University Rankings 2010-2022) and is No.2 in the UK for research power (Research Excellence Framework 2021).
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Alex Kwan @alexkwan.bsky.social · 07/08/2025
New preprint + thread 🧵 #Psychedelics induce the formation of new synapses, but where do they connect? Our rabies tracing study reveals that #psilocybin shifts connectivity across specific cortical networks. www.biorxiv.org/content/10.1... 1/12
Summary figure for study of psilocybin's effect on cortical network connectivity.
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Mohamady El-Gaby @melgaby.bsky.social · 07/08/2025
Can we use what we’ve learned about cognitive maps to understand social cognition, including theory of mind? If you’re interested in answering this question then this is a fantastic postdoc opportunity with @mkwittmann.bsky.social in collaboration with @summerfieldlab.bsky.social and my lab.
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Malcolm Campbell @malcolmgcampbell.bsky.social · 07/08/2025
Our paper on foraging is now published in Neuron! Read it here: www.cell.com/neuron/fullt... This project was co-led by Michael Bukwich (not on Bluesky) and me, with major contributions from all co-authors. Huge thanks to the whole team!
cell.com
Competitive integration of time and reward explains value-sensitive foraging decisions and frontal cortex ramping dynamics
Bukwich and Campbell et al. show that mice integrate elapsed time and reward intake, scaled by a latent patience variable, to decide when to leave virtual “patches.” Frontal cortex ramping activity ma...
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Guido Meijer @guidomeijer.com · 05/08/2025
🚨Pre-print alert🚨 We stimulated serotonin with optogenetics while doing large-scale Neuropixel recordings across the mouse brain. We found strong widespread modulation of neural activity, but no effect on the choices of the mouse 🐭 How is this possible? Strap in! (1/9) 👇🧵 doi.org/10.1101/2025...
doi.org
Serotonin drives choice-independent reconfiguration of distributed neural activity
Serotonin (5-HT) is a central neuromodulator which is implicated in, amongst other functions, cognitive flexibility. 5-HT is released from the dorsal raphe nucleus (DRN) throughout nearly the entire f...
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Ilana Witten @ilanawitten.bsky.social · 05/08/2025
We're looking for a research assistant to work in our neuroscience lab at @princetonneuro.bsky.social @hhmi.org where we study learning and decision-making circuitry. Apply here: research-princeton.icims.com/jobs/21001/r... Pls share w/ anyone who might be interested!
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Aidan Horner @aidanhorner.bsky.social · 21/07/2025
2 Lecturer (Assistant Prof) positions available @yorkpsychology.bsky.social! Come join our department! #neuroskyence #cognition #psychscisky #neurojobs jobs.york.ac.uk/vacancy/lect...
jobs.york.ac.uk
Jobs - The University of York
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Matteo Carandini @carandinilab.net · 18/07/2025
A new study led by @timothysit.bsky.social reveals that different layers of mouse V1 integrate visual and non-visual signals differently. Activity is dominated by vision (or spontaneous fluctuations) in L2/3 and by movement in L5. This leads to different geometries. www.biorxiv.org/content/10.1...
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Rebecca Berrens @rberrens.bsky.social · 16/07/2025
Very happy to share our protocols paper for CELLO-seq. This will make single cell long read RNA-seq more accessible and provides analysis guidelines. We hope this helps the #transposon #TEsky community and folks working on #singleCell isoform and allelic #gene expression. doi.org/10.1038/s415...
doi.org
Long-read RNA sequencing of transposable elements from single cells using CELLO-seq - Nature Protocols
Single-cell long-read RNA sequencing enables the high-fidelity mapping of single-cell expression data from highly sequence-similar transposable elements to unique genomic loci by correcting errors fro...
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Vikaas Sohal @vikaassohal.bsky.social · 30/06/2025
New work! Learning is assumed to involve synaptic plasticity, but which specific synapses change to enable higher order cognitive functions? We actually find that cognitive flexibility involves potentiation of long-range GABAergic synapses from prefrontal PV neurons: www.biorxiv.org/content/10.1...
biorxiv.org
Synaptic plasticity of prefrontal long-range inhibition regulates cognitive flexibility
While glutamatergic synaptic plasticity is believed to be a fundamental mechanism mediating learning, the behavioral significance of plasticity at cortical GABAergic synapses remains less well underst...
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