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Pierre Le Merre

@pierrelemerre.bsky.social
642 followers 762 following 97 posts

CNRS Researcher at CRNL. Research Specialist at Karolinska Institutet, Stockholm. Studying the prefrontal cortex and cognition in rodents. Electronic musician. lab : www.lab.pierrelemerre.com personal webpage: www.pierrelemerre.com

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Pierre Le Merre @pierrelemerre.bsky.social · 8h
Having spent half of my summer to now mostly writing grants, I would definitely give a chance (pun intended) to this proposal! @apeyrache.bsky.social @thetransmitter.bsky.social www.thetransmitter.org/funding/gran...
thetransmitter.org
How about adding an element of chance to grant review?
A process that uses a lottery system saves time and accepts that, above a quality threshold, luck has always played a part in science funding.
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Pierre Le Merre @pierrelemerre.bsky.social · 13/08/2026
"If an animal can do something (regardless as to the behavioral rarity or particular species), there are neural circuits for these actions which can be examined [...]" Great piece and reflexion on "naturalistic" behavior by @froemkelab.bsky.social. doi.org/10.48550/arX...
doi.org
But What Behavior?
What is a natural behavior? I argue that the study of natural behaviors is often the study of the spontaneous behaviors of animals placed in quantifiably different environments. For behavioral general...
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Pierre Le Merre @pierrelemerre.bsky.social · 01/08/2026
Here we go again! Grant writing during the summer break….feels like a yearly routine by now…
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Pierre Le Merre @pierrelemerre.bsky.social · 20/07/2026
We wrote a French digest for médecine/sciences about our recent work in Nat. Neuro with @nicolasguyon.bsky.social Original work: www.nature.com/articles/s41... French piece: www.medecinesciences.org/fr/articles/...
medecinesciences.org
Comment redessiner la carte du cerveau en écoutant les neurones un par un ? | médecine/sciences
médecine/sciences (M/S), revue internationale dans le domaine de la recherche biologique, médicale et en santé
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Nicolas Guyon @nicolasguyon.bsky.social · 20/07/2026
Haven’t written science in French in years, but just published a short open-access commentary on my Nat Neuro work with @pierrelemerre.bsky.social. Hopefully useful for teaching in French-speaking contexts! You can find it here: doi.org/10.1051/meds... Original work: www.nature.com/articles/s41...
3 representations of the human brain illustrating the evolution of hypotheses and methods of brain mapping: from phrenology (drawing by Nirupa Rao) to modern atlases.
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Pierre Le Merre @pierrelemerre.bsky.social · 29/05/2026
Looking for a postdoc (fast)!! 😅 2-years funded on the ATIP-Avenir Program. I'll be at #FENS2026 in Barcelona if you want to meet in person. www.fens.org/careers/job-...
fens.org
Postdoctoral Research Position - Federation of European Neuroscience Societies
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Pierre Le Merre @pierrelemerre.bsky.social · 01/05/2026
So I (well Claude mostly) made a @julialang.org port of the ZETA test originally developped by Jorrit Montijn (published here: elifesciences.org/articles/71969). The port is faithful to zetapy (Python version by @guidomeijer.com and @alexanderheimel.bsky.social). Enjoy github.com/PierreLeMerr...
github.com
GitHub - PierreLeMerre/ZetaJu
Contribute to PierreLeMerre/ZetaJu development by creating an account on GitHub.
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Pierre Le Merre @pierrelemerre.bsky.social · 02/04/2026
Dear colleagues, We are looking for a PhD candidate! Project co-directed by Centre de Recherche en Neurosciences de Lyon and by the Laboratoire de Mécanique et d'Acoustique (Marseille). Fully funded by Fondation Pour l'Audition (see link). Deadline April 30, 2026 www.abg.asso.fr/fr/candidatO...
abg.asso.fr
Développement de l'Audiosphère : une plateforme audio spatiale pour tester la catégorisation auditive naturaliste chez les animaux non-humains // Developing the Audiosphere: a spatial audio platform f...
Ce projet de thèse s'inscrit dans le cadre du projet Audiosphère, qui vise à établir un nouveau cadre expérimental et théorique pour comprendre comment les animaux forment et utilisent des catégories ...
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Pierre Le Merre @pierrelemerre.bsky.social · 02/02/2026
Using Kandel et al., Principles of Neural Science as a stand for monitors is clearly a thing in the field right?
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PessoaBrain @pessoabrain.bsky.social · 22/01/2026
𝗛𝗼𝘄 𝗱𝗼 𝗯𝗿𝗮𝗶𝗻 𝗮𝗿𝗲𝗮𝘀 𝗿𝗲𝗹𝗮𝘁𝗲𝗱 𝘁𝗼 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻? "High-resolution activity maps of PFC did NOT align with cytoarchitecturally defined subregions." Key tenet in neuroscience is that cytoarchitectonic boundaries correspond to functional ones. NB: study in the mouse #neuroskyence doi.org/10.1038/s415...
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Karolinska Institutet @ki.se · 20/01/2026
Activity-based maps of the prefrontal cortex in mice, presented in @natneuro.nature.com today, challenge classical descriptions of the brain. The new maps reveal functional territories that differ from traditional, tissue-based maps. #Neuroscience #Brain 🧪 news.ki.se/new-brain-ma...
news.ki.se
New brain maps challenge traditional descriptions of the brain
For more than a century, maps of the brain have been based on how brain tissue looks under the microscope. These anatomical maps divide the brain into regions according to structural variations in the...
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Nicolas Guyon @nicolasguyon.bsky.social · 20/01/2026
It's out! Our new study (led by @pierrelemerre.bsky.social & @weltgeischt.bsky.social @carlenlab.bsky.social) challenges classical cytoarchitectonic borders in the prefrontal cortex, showing that connectivity better explains its functional organization. Read the open-access paper here: rdcu.be/eZUkh
rdcu.be
A prefrontal cortex map based on single-neuron activity
Nature Neuroscience - The authors mapped spontaneous and choice activity across mouse prefrontal cortex. The activity maps aligned with intrinsic connectivity rather than anatomical subregions,...
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Eleni Moysiadou @elenimoys.bsky.social · 20/01/2026
Delighted to have been part of this amazing team! ✨
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Pierre Le Merre @pierrelemerre.bsky.social · 20/01/2026
Main postdoc study out! We can redefine prefrontal cortex regions with single-unit activity! Grateful to @carlenlab.bsky.social and @weltgeischt.bsky.social who made this crazy project real. Thanks to all co-authors, collaborators, and reviewers. www.nature.com/articles/s41...
nature.com
A prefrontal cortex map based on single-neuron activity - Nature Neuroscience
The authors mapped spontaneous and choice activity across mouse prefrontal cortex. The activity maps aligned with intrinsic connectivity rather than anatomical subregions, suggesting that connectivity...
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Pierre Le Merre @pierrelemerre.bsky.social · 23/12/2025
Christmas is early this year! A must read for your break.
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Pierre Le Merre @pierrelemerre.bsky.social · 05/12/2025
Pretty interesting use of rabies tracing!
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Pierre Le Merre @pierrelemerre.bsky.social · 09/10/2025
Now that I’m am a PI I can post pictures of the new office space.
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International Brain Laboratory @intlbrainlab.bsky.social · 03/09/2025
If you have a project idea (experiment or theory!) please apply to become an IBL partner: internationalbrainlab.com/ibl-core-apply +
internationalbrainlab.com
Apply to work with the IBL Core — International Brain Laboratory
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Pierre Le Merre @pierrelemerre.bsky.social · 22/08/2025
Open Neuroscience need our support!! NWB ecosystem hold promise for future discoveries in Neuroscience and has been pivotal for the community. @openscience
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Neurodata Without Borders @nwb.org · 18/07/2025
NeuroDataReHack participants from all over the world are finishing up 10 exciting projects analyzing open neurophys data on @dandiarchive.org. Thank you @hhmijanelia.bsky.social for being amazing hosts as always! Stay tuned for the workshop report. @chrishalcrow.bsky.social @mcelotto95.bsky.social
Chris Halcrow presents on SpikeInterface at NeuroDataReHackMarco Celotto works with a team on the whiteboard at NeuroDataReHack
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Paris-Saclay Institute of Neuroscience @neuropsi.bsky.social · 28/06/2025
🔬🐁 We have a new position open! ➡️ Our "Chaire Professeur Junior" position focuses on multi-omics during brain development. This research-heavy position follows a tenure-track scheme, leading to a full professor position. 🗓️ Application deadline: 22/08/2025
universite-paris-saclay.fr
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Pierre Le Merre @pierrelemerre.bsky.social · 07/07/2025
Release, reuse, reduce!! A piece on open data by @bendichter.com
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Cantin Ortiz @cantinortiz.bsky.social · 01/07/2025
The main project from my PhD, in collaboration with Manuela Allegra and @schlab.bsky.social is now available as a preprint! We wondered how the hippocampus and the visual cortex may differ in the way they refine sensory inputs into internal representations
biorxiv.org
Task engagement differentially drives hippocampal and neocortical neural codes
Sensory inputs are progressively transformed into internal representations of the environment along the cortical hierarchy. How does the behavioral relevance of these inputs affect this encoding? Usin...
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Pierre Le Merre @pierrelemerre.bsky.social · 26/06/2025
I am extremely grateful and beyond happy to share that I have been awarded an @inserm.fr #ATIP-Avenir fellowship to start my own lab to study neuronal circuits for auditory categorization! Thanks to everyone who made this possible.
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Olivier Marre @oliviermarre.bsky.social · 03/06/2025
In case this is helpful for anyone, here is a post on how to get a job in french academia : trialsanderrors.substack.com/p/getting-a-... Aimed at non-french scientists who are curious, but french ones may find it useful too.
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Pierre Le Merre @pierrelemerre.bsky.social · 31/03/2025
Feeling pretty good today! I got accepted at CNRS (section 25)!! Congrats to the other candidates too!
media.tenor.com
a man pointing to a sign that says believe
ALT: a man pointing to a sign that says believe
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Kevin Mitchell @wiringthebrain.bsky.social · 14/03/2025
Beyond Mechanism—Extending Our Concepts of Causation in Neuroscience onlinelibrary.wiley.com/doi/10.1111/... - really pleased that this paper with Henry Potter is now published in the European Journal of Neuroscience 😊
onlinelibrary.wiley.com
Beyond Mechanism—Extending Our Concepts of Causation in Neuroscience
The search for neural mechanisms of behaviour often relies on a synchronic, driving view of causation, where neural activity drives more neural activity, which eventually drives behaviour. The real c...
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Jonathan A. Michaels @jonathanamichaels.bsky.social · 13/03/2025
I'll never stop being in awe of the brain. Raster of a single neuron in medial geniculate body responding to auditory tones.
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David Poeppel @davidpoeppel.bsky.social · 13/03/2025
www.youtube.com/watch?v=n5nE... Important and painful
youtube.com
How Germany's elite research institution fails young scientists | DW Documentary
YouTube video by DW Documentary
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Randall Munroe @xkcd.com · 26/02/2025
RNA xkcd.com/3056
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Marie Carlén @carlenlab.bsky.social · 24/02/2025
We are hiring a research assistant! Come join our ongoing project investigating the PFC-striatum pathway in cognitive flexibility. Head-fixed behavior, Neuropixels, optogenetics, and viral circuit tracing etc ki.varbi.com/en/what:job/.... Please spread.
ki.varbi.com
Research Assistant in Neuroscience
Do you want to contribute to top quality medical research? The position regards experimental research in the laboratory of Professor Marie Carlén in the Department of Neuroscience. Utilizing a sy
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The Transmitter @thetransmitter.bsky.social · 20/02/2025
Scientific data and independence are at risk: We need to work with community-driven services and university libraries to create new multi-country organizations that are resilient to political interference. By @neuralreckoning.bsky.social #neuroskyence www.thetransmitter.org/policy/scien...
thetransmitter.org
Science must step away from nationally managed infrastructure
Scientific data and independence are at risk. We need to work with community-driven services and university libraries to create new multi-country organizations that are resilient to political…
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minimaliste13 @minimaliste13.cpesr.fr · 20/02/2025
Je recommande très vivement de lire cette pétition contre *check notes* une encyclopédie libre et gratuite au fonctionnent démocratique : la liste des premiers signataires est une compilation superbe des menteurs compulsifs et des impostures intellectuelles de notre temps. C'est fantastique.
lepoint.fr
Halte aux campagnes de désinformation et de dénigrement menées sur Wikipédia
APPEL. Éric Dupond-Moretti, Sophie de Closets, Sophia Aram, Joann Sfar, Denis Olivennes, Marc-Olivier Fogiel, Élisabeth Badinter, Caroline Fourest, François Gemenne, Muriel Beyer font partie des premi...
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Matteo Carandini @carandinilab.net · 07/02/2025
Neuropixels and Optogenetics are delighted to announce the birth of Neuropixels Opto Combining high-resolution electrophysiology and optogenetics Today in bioRxiv 960 sites, 28 emitters, 2 colors By Lakunina, @karolinazsocha.bsky.social, Ladd, et al www.biorxiv.org/content/10.1... (1/2)
A Neuropixels Opto probe with 3 blue emitters and 3 red emitters lighting up in succession, with corresponding neural activity in different layers of the cortex.
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Pierre Le Merre @pierrelemerre.bsky.social · 02/02/2025
Thanks to the support of Fondation pour l’audition, I am really happy to finally be able to write this words: I’ll be starting my team in Lyon to study neuronal circuits for auditory categorization! www.fondationpourlaudition.org/le-merre-pie...
media.tenor.com
a man pointing to a sign that says believe
ALT: a man pointing to a sign that says believe
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Gabrielle Girardeau @ggirardeau.bsky.social · 22/01/2025
⚠️ Un poste de MCU en Maths-Info-Stats s'ouvre bientôt à Sorbonne Université pour rejoindre mon équipe (background computationnel et experience en analyse de données de neurosciences experimentales souhaités + qualification requise). Contactez-moi pour plus d'infos! Please RP!
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Pierre Le Merre @pierrelemerre.bsky.social · 14/01/2025
Just saw this: www.lieffcabraser.com/antitrust/ac... Go @lucinauddin.bsky.social !!
lieffcabraser.com
Academic Journal Publishers Antitrust Litigation
Academic Journal Publishers Antitrust Litigation On September 12, 2024, Lieff Cabraser and co-counsel at Justice Catalyst Law filed a federal antitrust lawsuit on behalf of plaintiff Lucina Uddin in...
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Mathieu Wolff @mathieuwolff.bsky.social · 09/01/2025
🎓✨ It’s that time of the year! PhD applications are open at Bordeaux Neurocampus. Ready to dive into an international, dynamic, and exciting research environment? 🌍🧠 Apply now!
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Pierre Le Merre @pierrelemerre.bsky.social · 13/12/2024
Really cool ressource here!
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Gabrielle Girardeau @ggirardeau.bsky.social · 10/12/2024
We have with Bryan Souza a PhD project proposal under shared supervision at the DIM C-BRAINS (listed under NeuREMotion). International undergraduate students, check the program and apply!! (to our or other projects) dim-cbrains.fr/fr/phd-progr... #neuroskyence
dim-cbrains.fr
DIM C-BRAINS
Cognition and Brain Revolutions: Artificial Intelligence, Neurogenomics, Society
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Mark D Humphries @markdhumphries.bsky.social · 04/12/2024
So I had a thought: what would the final systems neuroscience paper look like? My latest column for @thetransmitter.bsky.social gives my answer- what’s yours?
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Pierre Le Merre @pierrelemerre.bsky.social · 03/12/2024
Some empirical approach on a recurrent question: Does the brain care about averages? Cool study from @zeronoiselab.bsky.social
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Marie Carlén @carlenlab.bsky.social · 25/11/2024
My first on BlueSky! 5 yrs in the making, a new view on the mouse PFC, based on activity
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Pierre Le Merre @pierrelemerre.bsky.social · 25/11/2024
Our new study is out on BioRXiv! tinyurl.com/pfcmap We (@carlenlab.bsky.social lab) mapped the mouse PFC using single-unit activity! We recorded ~23,000 neurons across cortical/subcortical regions and profiled spont. firing patterns to reveal what separates the PFC from other brain regions. 1/n
biorxiv.org
A Prefrontal Cortex Map based on Single Neuron Activity
The intrinsic organization underlying the central cognitive role of the prefrontal cortex (PFC) is poorly understood. The work to date has been dominated by cytoarchitecture as a canvas for studies on...
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Ben Hayden @benhayden.bsky.social · 22/11/2024
Important paper! www.biorxiv.org/content/bior... Im not sure the Discussion fully delineates its radical implications. No more... * Place cells * Grid cells, splitter cells, border cells * Mirror neurons * Reward neurons * Conflict cells (continued)
biorxiv.org
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Guido Meijer @guidomeijer.com · 11/11/2024
I made a systems neuroscience starter pack, focused on experimentalists who study the brain at the level of populations of neurons! Also want to be on the list? Reply or DM me a picture of your ephys rig or 2p setup and I'll add you 🤭 go.bsky.app/UiqX7ry
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Pierre Le Merre @pierrelemerre.bsky.social · 11/11/2024
Oh wow the adds, the stupid content, the cat videos (tough I might miss them…) are gone! Back to scientific social network! Very Good starting feeling!
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