Lukas Groschner
Brains, biophysics, behaviour
https://www.groschner-lab.org
- Reposted by Lukas Groschner[This post could not be retrieved]
- Reposted by Lukas GroschnerVery thankful for this thoughtful dispatch by @shaisrael.bsky.social sky.social and Moshe Parnas about our work. Learning and memory: Forgetting to remember: Current Biology www.cell.com/current-biol...
- Now out in @currentbiology.bsky.social: neuroscientists in the lab of @felsenberg.bsky.social found that in fruit flies, re-tasting a sugar reward can weaken past memories, pointing to new ways to safely update harmful ones. www.fmi.ch/news-events/...
- Reposted by Lukas GroschnerThe first paper from the lab is now out in Science Advances: Multimodal social context modulates larval behavior in Drosophila www.science.org/doi/10.1126/... We find that fly larvae keep their distance to conspecifics in the absence of food, enjoy reading! @cbehav.bsky.social @uni-konstanz.de
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- Reposted by Lukas GroschnerExcited for the publication of our recent work on how pyramidal cells shape the identity of interneurons in the Cortex! Big shout out to @artofbiology and Sherry Jingjing wu! www.nature.com/articles/s41...
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- Reposted by Lukas GroschnerThe second paper from the lab is now available on bioRxiv: www.biorxiv.org/content/10.6... We discovered that cannibalistic behavior in fly larvae is social-context dependent. Larval groups avoid dead conspecifics; individuals show high attraction. They only do it when no one is watching 😉
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- Reposted by Lukas Groschnerwww.cell.com/cell/fulltex... We had a lot of fun working on this project (led by Itzel Ishida, not on bluesky). Some interesting highlights from the paper -
- Reposted by Lukas Groschner0.00003 foot tall xmas tree from a Drosophila flight steering muscle 🎄 image by @anne-sustar.bsky.social
- Reposted by Lukas Groschner📢 Join us, the Haberkern lab, @uni-wuerzburg.de for a postdoc studying neural circuit mechanisms of navigation. You’ll spearheading neurophysiology experiments on our brand new 2P! ⏳ Apply by 28th February 2026 Details: www.haberkernlab.de/docs/ENPostd... #neuroscience #academicjobs #postdoc
- Reposted by Lukas GroschnerVery proud of this new paper from the lab! Work by the magnificent Andrea Adden and many brilliant collaborators illuminate how moth and butterfly brains have evolved in light of different ecologies. Freely available here: rdcu.be/eVR3B; @lundvision.bsky.social @biologylu.bsky.social
- Reposted by Lukas GroschnerCarolin Warnecke together with Hanna, Dennis, Bene & Kerstin from my lab show that re-exposure to reward diminishes multiple associated olfactory memories. We’re hiring 2 postdocs—DM/email me for details. #Postdoc #Hiring www.sciencedirect.com/science/arti...
- Reposted by Lukas GroschnerI am super happy to share that our project on training biophysical models with Jaxley is now published in Nature Methods: www.nature.com/articles/s41...
- Come join us in July 2026 for the 14th European Conference on Mathematical & Theoretical Biology in Graz, Austria! Registration opens now: ecmtb2026.org #ECMTB’26 @smbmathbiology.bsky.social
- Reposted by Lukas GroschnerWe’re hiring! 🚨 Assistant Professor (TT) in Theoretical or Computational Biological Physics @univmiami.bsky.social 😀 Come build the future of interdisciplinary biophysics with us! Apply by Dec 15 → tinyurl.com/5n9bk836 #Biophysics #PhysicsJobs #AcademicJobs #UMiami
- Reposted by Lukas GroschnerApply to become a CSHL-Simons Fellow in Neuroscience! Run your own lab, pursue bold ideas, join a highly collaborative community! All areas including experimental or computational neuro, including NeuroAI & systems PhD required; ≤~1 yr postdoc www.cshl.edu/about-us/car...
- Reposted by Lukas GroschnerExciting news for #drosophila #connectomics and #neuroscience enthusiasts: the Drosophila male central nervous system connectome is now live for exploration. Find out more at the landing page hosted by our Janelia FlyEM collaborators www.janelia.org/project-team....
- Reposted by Lukas Groschner📢 🚨 Technical Assistant Opportunity in Neuroscience 📢 🚨 Join us at @lmumuenchen.bsky.social and support research on how neural circuits 🧠 drive adaptive behavior! ⏳ Deadline: 15. November 2025 Learn more and apply: www.fens.org/careers/job-...
- Reposted by Lukas GroschnerWe are recruiting PhD students! Join us in exploring the multiple dimensions of biological intelligence at our international and fully funded graduate program IMPRS-BI in the Munich area, Germany! 🔔 Application period: 1 October to 10 November 🧪 Apply here: imprs-bi.mpg.de
- Reposted by Lukas Groschner🚨Preprint🚨 What started as an attempt to compare CT scans of diverse fly brains, ended up a new concept for analysis & segmentation of difficult tomographic data. No ground truths, no training, just maths. This is TopoTome, topological data analysis of 3D images www.biorxiv.org/content/10.1...
- Reposted by Lukas GroschnerHow is valence computed in the brain? Check out our new preprint about a single cell that integrates excitatory and inhibitory input across modalities according to valence and impacts behavioral decisions. An exciting collaboration across many labs. Enjoy reading! www.biorxiv.org/content/10.1...
- Reposted by Lukas GroschnerOpen Call for Expressions of Interest: become a Max Planck Director & redefine what’s possible in science! We offer scientific independence, long-term stable funding & exceptional infrastructure. Lead your own department & open new frontiers of research. Apply by 31 Oct 2025 → www.mpg.de/directors
- Reposted by Lukas GroschnerThe final version of our paper on how ants and possibly other insects use a crazy mechanism involving extensive transcriptional interference to regulate odorant receptor expression is now open access in my favorite journal, @currentbiology.bsky.social authors.elsevier.com/sd/article/S...
- Reposted by Lukas GroschnerHow does the brain decide? 🧠 Our new @nature.com paper shows that neural activity switches from an 'evidence gathering' to a 'commitment' state at a precise moment we call nTc. After nTc, new evidence is ignored, revealing a neural marker for the instant when the mind is made up. rdcu.be/eGUrv
- Reposted by Lukas GroschnerApply now to become a speaker at our Institute! We invite excellent postdocs in neuroscience, ecology and other fields related to our research to apply for our Emerging Scientist Talk Series. Apply by October 24: www.bi.mpg.de/ess @chr-mayer.bsky.social @fleyes.bsky.social @michaelahau.bsky.social
- Reposted by Lukas GroschnerExcited to share our latest work - expressing the bacterial sodium channel in fly Kenyon cells surprisingly *decreases* their excitability, thanks partly to decreased endogenous sodium channels. This prevents learning and decreases odor-evoked calcium influx doi.org/10.1113/JP28...
- Reposted by Lukas GroschnerFlyBase needs your help! We ask that European labs continue to contribute to Cambridge, UK FlyBase, whereas US and other non-European labs can contribute to US FlyBase. For more information and how to donate: wiki.flybase.org/wiki/FlyBase...
- Reposted by Lukas GroschnerHow do brain circuits evolve? We started looking for some answers by using synapse-resolution cross-species comparative connectomics on an entire olfactory circuit 👇 bit.ly/44aVm9E
- Reposted by Lukas GroschnerFlyBase, a Drosophila database, will lose a third of its team in early October because the Harvard grant that covered the employees’ salaries was canceled. Scientists warn that losing FlyBase could devastate fly research. By @claudia-lopez.bsky.social www.thetransmitter.org/community/ha...
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- Reposted by Lukas GroschnerWe need more papers that start with Steve Urkel quotes. Thank you @kylethieringer.com and @tuthill.bsky.social for this wonderful and fun review of our recent paper describing limb feedback in the visual system! doi.org/10.1016/j.cu...
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- Reposted by Lukas Groschner1/N What are the organizational principles underlying crossmodal cortical connections? We address this in this new preprint, led by @alexegeaweiss.bsky.social & @bturner-bridger.bsky.social in collab w/ @petrznam.bsky.social @crick.ac.uk www.biorxiv.org/content/10.1...
- Reposted by Lukas Groschner1/ Mapping synaptic connectivity between individual neurons is extremely laborious. We developed BRISC, a new method that makes it possible to map inputs onto 100s of neurons in the same animal in a matter of weeks! Led by Alex Becalick and @antblot.bsky.social. 🧵 www.biorxiv.org/content/10.1...
- Reposted by Lukas GroschnerNew paper from our lab! This was such a fun project to be a part of - proof that sometimes following a spurious observations down the rabbit hole leads to awesome findings. www.cell.com/current-biol...
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- Reposted by Lukas GroschnerNow out in @natneuro.nature.com: Temporal control of progenitor competence shapes maturation in GABAergic neuron development in mice. Congrats to first authors @annrosebright.bsky.social, Yana Kotlyarenko, @flo-neuhaus.bsky.social, and thanks to all collaborators! www.nature.com/articles/s41... 1/n
- Reposted by Lukas GroschnerWe have an open position for a Scientist I at the Allen Institute for Neural Dynamics. Come join our exciting research environment @alleninstitute.org. Please share! alleninstitute.org/careers/jobs...
- Reposted by Lukas GroschnerPleased to say that our story of how a theory of self-supervised learning in cortical layers accounts for several experimental observations is now out 🎉 www.nature.com/articles/s41...
- Reposted by Lukas GroschnerYour brain doesn’t just passively track time ⏳ - it structures it. In @Science.org we show that activity in 🧠 memory circuits (LEC) drifts constantly, but makes sharp jumps at key moments, segmenting life into meaningful events. (1/2) 👉 www.science.org/doi/10.1126/...
- Reposted by Lukas Groschner'(...) there is no established resource for group leaders to improve their lab culture with concrete action points for implementation. Here, we introduce the SAFE Labs Handbook: a collection of thirty “commitments” which can be verifiably actioned without requiring institutional support.' #Preprint
- Reposted by Lukas GroschnerWe are proud to have @maxcapelle.bsky.social's paper out on bioRxiv! He found that phototactic behavior in #zebrafish switches during #ontogeny🐟🔆 Through elegant behavioral dissections, he identifies the navigational strategies related to this transition. www.biorxiv.org/content/10.1... Thread 👇
- Reposted by Lukas GroschnerDoes the brain learn by gradient descent? It's a pleasure to share our paper at @cp-cell.bsky.social, showing how mice learning over long timescales display key hallmarks of gradient descent (GD). The culmination of my PhD supervised by @laklab.bsky.social, @saxelab.bsky.social and Rafal Bogacz!
- Reposted by Lukas GroschnerThe Neural Systems & Behavior Course at the Marine Biological Laboratory is going to be looking for a co-director. If you're a faculty member who is interested in helping to organize and run this incredible course, submit a brief statement and your CV at this website. www.mbl.edu/education/ad...
- Reposted by Lukas GroschnerJoin the #VosshallLab as a postdoctoral scientist. Fully funded, right here in New York City @rockefelleruniv.bsky.social hhmi.wd1.myworkdayjobs.com/en-US/Extern...
- Reposted by Lukas GroschnerWe just pushed “Memory by a 1000 rules” onto bioRxiv, where we use clever #ML to find #plasticity quadruplets (EE, EI, IE, II) that learn basic stability in spiking nets. Why is it cool? We find 1000s!! of solutions, and they don’t just stabilise. They #memorise! www.biorxiv.org/content/10.1...
- Reposted by Lukas Groschner1/3 Starting this summer, and after 11 wonderful years in Munich, the Portugues Lab will be starting a new adventure at the Department of Neurobiology and Behavior (NBB) (nbb.cornell.edu) at Cornell University in Ithaca, NY.
- Reposted by Lukas GroschnerIf you're planning a course with mathematical methods content, or use such methods in your own work, please take a look at "Mathematics in Biology", by Meister, Lee, and Portugues, published at MIT Press. 1/2 @portugueslab.bsky.social mitpress.mit.edu/978026204940...
- Reposted by Lukas GroschnerAre you interested in visual systems? How are they similar or different across species? Read the review by Ryosuke @ryosuketanaka.bsky.social and Ruben published today in @natrevneuro.nature.com. It is available here: rdcu.be/enlpC
