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Johannes Larsch

@jlarsch.bsky.social
466 followers 321 following 7 posts

Assistant Prof. at the University of Lausanne. Interested in how brains control social behavior. www.unil.ch/fbm/en/home/menuinst/re…

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Reposted by Johannes Larsch
Yinan Wan @yinanwan.bsky.social · 02/06/2026
Excited to share that I will start my lab at the Center for Integrative Genomics in Lausanne @unil.bsky.social in Jan 2027! I’m looking for PhD students fascinated by how cells build tissues and excited about developing new technologies to study development across scales. www.wanlab.bio/pages/9397
wanlab.bio
Yinan Wan Lab | UNIL CIG - Join us!
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Matt Lovett-Barron @mlovettbarron.bsky.social · 23/09/2026
Our lab's latest paper on the neurobiology of collective behavior is now published www.nature.com/articles/s41... This is the work of a great team in the lab - led by Jo-Hsien Yu, with Geoff Meyerhof, Jimjohn Milan, and Julia Napoli @nature.com @danionella.bsky.social
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Alex Schier @schierlab.bsky.social · 08/09/2026
The first Danionella paper from the lab. Danionella cerebrum is transparent, so you can see all of the internal organs. But what sensory information are the organs sending to the brain? In our new preprint, Emily Bayer wanted to find out. 1/4 www.biorxiv.org/content/10.6...
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Bahl Lab @bahllab.bsky.social · 12/08/2026
The animal is the same. The stimulus is identical. Yet the behaviour varies. Why? In our new study, @ashritocyte.bsky.social explores the sources of this behavioural variability under fully controlled conditions in larval zebrafish doing optomotor response. (1/7) www.biorxiv.org/content/10.6...
biorxiv.org
Opposing influences of sensory and response history in larval zebrafish
Variability is a prominent feature of animal behavior across species. Despite highly controlled experimental conditions, the same individual often responds differently to repeated identical stimulatio...
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fbm-unil.bsky.social @fbm-unil.bsky.social · 03/09/2026
🧬 Want to join one of the Faculty’s leading laboratories? Want to start a #PhD in #Life #Sciences? 𝗔𝗽𝗽𝗹𝘆 𝗻𝗼𝘄 𝗳𝗼𝗿 𝗙𝗕𝗠 𝗣𝗵𝗗 𝗙𝗲𝗹𝗹𝗼𝘄𝘀𝗵𝗶𝗽𝘀 𝗶𝗻 𝗟𝗶𝗳𝗲 𝗦𝗰𝗶𝗲𝗻𝗰𝗲𝘀! 🔔 Before October 5th, 2026 Learn more 👉 www.unil.ch/news/en/1786...
unil.ch
PhD Fellowships in Life Sciences: a competition open to future doctoral students.
Apply now for FBM PhD Fellowships in Life Sciences – join one of the Faculty’s leading laboratories.
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Emre Yaksi @emreyaksi.bsky.social · 02/07/2026
I am excited to announce the latest paper from our lab, published in Science ! In this study, we show that thalamocortical-like circuits in the zebrafish brain process sensory information hierarchically across topographically organized forebrain circuits.
science.org
Hierarchical sensory processing in zebrafish thalamocortical-like circuits
Thalamocortical projections shape the functional regionalization and parallel sensory computations across the mammalian cortex. However, the principles of thalamocortical computations in non-mammalian...
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Andres Bendesky @bendeskylab.com · 17/04/2026
Many wild populations are fragmenting and declining, leading to inbreeding. We are studying how animals avoid inbreeding and the consequences of inbreeding an in a >20 year study of >20,000 wild mice with whole genomes. We are recruiting a postdoc at Columbia and two PhD students in U Zurich.
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Richard Benton @bentonlab.bsky.social · 02/04/2026
@jlarsch.bsky.social and I are organising the 2026 CIG Symposium on June 11-12 in Lausanne on "Information transfer: from genes to behaviour", featuring an eclectic set of brilliant scientists. Details and registration here (abstracts by May 1, registration by June 1): www.unil.ch/fbm/en/home/...
unil.ch
CIG Symposium - FBM Unil
Page CIG Symposium of site Faculty of Biology and Medicine hosted by the University of Lausanne
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MwahahahahahadScientist @mads100tist.bsky.social · 16/03/2026
It's out! Happy to present ITEC, a semi supervised algorithm with an extremely low error rate that can track cells in files of any size (think Terabytes!). We used it in many organisms, including zebrafish, to study how organs form and linked it to gene expression www.biorxiv.org/content/10.6... +🧪
biorxiv.org
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Yinan Wan @yinanwan.bsky.social · 12/03/2026
Very grateful to everyone who made this work possible. I feel incredibly lucky to have worked with such an amazing team. Special thanks to: Jakob El Kholtei, KJ Jenie, @mcolomerr.bsky.social, and of course our wonderful collaborator Bogdan Bintu and my mentor @schierlab.bsky.social
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Annika Nichols @annika-nichols.bsky.social · 10/03/2026
I'm thrilled to announce that I'll be starting my lab as a SNSF starting grant professor at the Center for Integrative Genomics in Lausanne! I'm looking for PhD students who are fascinated about the neuronal basis of behaviour across species @fbm-unil.bsky.social
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Benjamin Judkewitz @benjulab.bsky.social · 05/03/2026
First whole-brain recording of social sound processing in a vertebrate. Surprises start in the hindbrain; thalamus gates conspecific calls; male and female brains diverge downstream. Work by @joerghenninger.bsky.social, @mh123.bsky.social sky.social and team. www.biorxiv.org/content/10.6...
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Portugues Lab @portugueslab.bsky.social · 07/01/2026
1/6: New publication from the lab: “Plastic landmark anchoring in zebrafish compass neurons” by Ryosuke Tanaka (@ryosuketanaka.bsky.social) and Ruben is available here: rdcu.be/eX1L4
rdcu.be
Plastic landmark anchoring in zebrafish compass neurons
Nature - Using two-photon microscopy with a panoramic virtual reality setup, how head direction cells in larval zebrafish integrate visual landmarks and optic flow to track orientation is revealed.
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Richard Benton @bentonlab.bsky.social · 12/12/2025
Deadline for this post-doc position in my lab extended to Jan 11th!
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Dan 🐟 C @zebrafish007.bsky.social · 02/12/2025
Exciting new #Zebrafish research from the #WeinsteinLab, led by Jong Park! “Specialized gas-exchange endothelium of the zebrafish gill” — www.biorxiv.org/content/10.6... Amazing to see red blood cells moving through the gills! Don’t forget to check out the supplemental movies ;-)
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Zebrafish Rock! @zebrafishrock.bsky.social · 02/11/2025
Slow-mo video of zebrafish mating. Credit to @zebrafish007.bsky.social. #ZebrafishZunday 🧪
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Richard Benton @bentonlab.bsky.social · 06/10/2025
Having personally sworn for years that insects don’t use GPCRs for odour detection, Suguru Takagi (@sugurutakagi.bsky.social) discovers that, in fact, they sometimes do … www.biorxiv.org/content/10.1...
biorxiv.org
A GPCR signaling pathway in insect odor detection
Odor detection differs fundamentally in vertebrates, which use G protein-coupled receptors (GPCRs), and insects, which employ ion channels. Here, we report the first evidence for a GPCR defining tunin...
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Hanna Zwaka @hannazwaka.bsky.social · 03/10/2025
“Blame your parents if you can’t pay enough attention." At least when you are a zebrafish! Our new study on attentional switching together with Kumaresh Krishnan, @paulapflitsch.bsky.social , @zwitscherarmin.bsky.social and Florian Engert is out in Science Advances: doi.org/10.1126/scia...
doi.org
Attentional switching in larval zebrafish
Attentional switching in larval zebrafish suggests a basis for focus and competence while performing a task.
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Daniel Kronauer @danielkronauer.bsky.social · 19/09/2025
The 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...
authors.elsevier.com
ScienceDirect.com | Science, health and medical journals, full text articles and books.
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fbm-unil.bsky.social @fbm-unil.bsky.social · 18/09/2025
Apply now for FBM #PhD #Fellowships in #Life #Sciences – join one of the Faculty’s leading laboratories. 🚨 Application deadline for fellowships: October 6, 2025. ➡️ www.unil.ch/news/en/1756... @unil.bsky.social @dmf-unil.bsky.social @dee-unil.bsky.social @dib-unil.bsky.social #fbm #unil
unil.ch
PhD Fellowships in Life Sciences: a competition open to future doctoral students.
Apply now for FBM PhD Fellowships in Life Sciences – join one of the Faculty’s leading laboratories.
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Reposted by Johannes Larsch
Emre Yaksi @emreyaksi.bsky.social · 16/09/2025
Check out this exciting study led by Anh-Tuan Trinh from our lab, where we investigated how thalamocortical-like circuits in the zebrafish pallium receive, represent, and integrate sensory information: 🔗 doi.org/10.1101/2025...
doi.org
Hierarchical processing of sensory information across topographically organized thalamocortical-like circuits in the zebrafish brain
Thalamocortical projections contribute to the spatial organization and functional hierarchies of the mammalian cortex. Primary sensory cortices receive topographically segregated information from firs...
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Tobias Rose @trose-neuro.bsky.social · 09/09/2025
BonnBrain 2026 is a go! March 23–25, Bonn (DZNE, Bonn, Germany). Apply now: www.bonnbrain.de Limited slots. Presentations (posters/talks) selected from submitted abstracts. Keynotes & invited speakers 👇
bonnbrain.de
Bonn Brain Conference
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Maxwell Shafer @maxshafer.bsky.social · 28/08/2025
Now published @natecoevo.nature.com with @annika-nichols.bsky.social, our latest on the evolution of 𝘴𝘭𝘦𝘦𝘱 across 𝟲𝟬 𝘀𝗽𝗲𝗰𝗶𝗲𝘀 of cichlid fishes! doi.org/10.1038/s415... with members of the @schierlab.bsky.social and Salzburger labs, as well as the burgeoning Shafer lab @uoftcellsysbiol.bsky.social
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Johannes Larsch @jlarsch.bsky.social · 23/08/2025
Jim was an incredibly gifted teacher. Still remember his fundamentals in Neuroscience. Also, great, dry sense of humor.
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Isaac Bianco @isaacbianco.bsky.social · 23/08/2025
Latest from the lab. Beautiful work from Joanna Lau and a fantastic collaboration with James Fitzgerald. www.cell.com/current-biol...
cell.com
Supraspinal commands have a modular organization that is behavioral context specific
Lau et al. use calcium imaging and statistical modeling to comprehensively survey reticulospinal activity during diverse locomotor behaviors. They find that a small set of functional modules act combi...
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Ann Kennedy @antihebbiann.bsky.social · 22/08/2025
Can't wait to read this preprint from Misha Ahrens and team. Calcium imaging in larval zebrafish, in every cell in the body! Amazing. www.biorxiv.org/content/10.1...
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Daniel Kronauer @danielkronauer.bsky.social · 21/08/2025
If you’re interested in ants, olfaction, gene regulation, or all of the above, here’s a new preprint from the lab for you. It describes an unorthodox mechanism of transcriptional interference by which ant olfactory sensory neurons produce a single functional receptor. www.biorxiv.org/content/10.1...
biorxiv.org
Transcriptional Interference Gates Monogenic Odorant Receptor Expression in Ants
Communication is crucial to social life, and in ants, it is mediated primarily through olfaction. Ants have more odorant receptor (OR) genes than any other group of insects, generated through tandem d...
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Greg Jefferis @jefferis.bsky.social · 21/08/2025
Neuronal diversity is written in transcriptional codes 🧬. But what is the logic of these codes that define cell types and wiring patterns? To find out we built a #scRNAseq developmental atlas of the Drosophila nerve cord and linked it to the #connectome 🪰🧠 #preprint thread ⬇️1/8
ALT text: A UMAP representation of a single cell RNAseq dataset from the Drosophila ventral nerve cord as well as images of the Drosophila nerve cord connectome and different stages of fly development.
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Carl T. Bergstrom @carlbergstrom.com · 12/08/2025
1. "'Trusting the experts is not a feature of either a science or democracy," Kennedy said." It's literally a vital feature of both science and of representative democracy. I've written a fair bit about trust in expertise as a vital mechanism in the collective epistemology of science.
scrippsnews.com
RFK Jr. in interview with Scripps News: ‘Trusting the experts is not science’
HHS Secretary RFK Jr. sat down with Scripps News for a wide-ranging interview, discussing mRNA vaccine funding policy changes and a recent shooting at the Centers for Disease Control and Prevention.
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eLife @elife.bsky.social · 08/08/2025
💡 Whether you’re a new student, a lab leader or a decision-maker at an institutional level, you can now find free tools and guidance all in one place on our new Learning Resources page. With everything in the thread below and more, get learning today! buff.ly/sIpX5gU
A stylised hand holds a smartphone from which colourful digital pages flow outward, surrounded by icons of books, screens, and learning materials on a dark blue and purple background.
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Julie Semmelhack @juliesemmelhack.bsky.social · 27/06/2025
Latest from my lab: we identify and characterize the function of binocular neurons zebrafish larvae use to hunt prey; sciencedirect.com/science/arti.... Congrats to Richard Tian, Gewei Yan and Tommy Lam @tkclam.bsky.social!
sciencedirect.com
Binocular integration of prey stimuli in the zebrafish visual system
Most animals with two eyes combine the inputs to achieve binocular vision, which can serve numerous functions and is particularly useful in hunting pr…
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Saikat Ray @ray-neuro.bsky.social · 30/01/2025
How does the brain work in natural scenarios, in multi-animal societies of wild animals? 🧠 🧪 🦇 doi.org/10.1126/scie... (1/n)
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Felix Baier @felixbaier.bsky.social · 23/07/2025
🚨Very happy that my PhD work is now out in @nature.com! We discovered that evolution, by acting in the midbrain, shifted the threshold to escape in Peromyscus mice, to fine-tune defensive strategies in different environments www.nature.com/articles/s41... This was a truly collaborative effort! 🧵⬇️
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Christian Fankhauser @chfankhauser.bsky.social · 16/06/2025
Great job opportunity at The Center for Integrative Genomics, Lausanne University, Switzerland unil.ch/cig/en/home.... For a tenure-track Assistant Professor position. More details for how to apply are here nature.com/naturecareer...
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Johannes Larsch @jlarsch.bsky.social · 21/07/2025
Become our colleague! Tenure-track Assistant Professor position at The Center for Integrative Genomics, University of Lausanne, Switzerland. unil.ch/cig/en/home.... More details for how to apply are here: www.nature.com/naturecareer...
CIG- UNIL
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Johannes Gräff @graeffjohannes.bsky.social · 21/07/2025
We are looking for a new neuroscience colleague at the tenure track assistant professor level! All details below! 🧠🔥 All details here: www.epfl.ch/about/workin...
epfl.ch
Faculty Position in Neuroscience
The School of Life Sciences at EPFL invites applications for a Tenure Track Assistant Professor position in Neuroscience. At EPFL researchers develop and apply innovative technologies to understand br...
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Ethan Scott's Lab @ethanscottlab.bsky.social · 04/06/2025
Congrats to @stednitz.bsky.social and Andrew Lesak on their @currentbiology.bsky.social paper! They use HMM to identify two interaction states in #zebrafish: one visual for long-range interactions and one lateral line for quick, close interactions. Free link: authors.elsevier.com/a/1lCYh3QW8S...
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EMBL-EBI @ebi.embl.org · 13/05/2025
Heart disease is the world’s leading killer, and tackling it demands decoding the multi-gene networks driving disease progression 🫀 Learn how researchers used Medaka fish plus high-throughput heartbeat imaging to build a biomarker toolkit for early screening. www.nature.com/articles/s41...
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Bahl Lab @bahllab.bsky.social · 17/03/2025
We are proud to present our new preprint “Correlative light and electron microscopy reveals the fine circuit structure underlying evidence accumulation in larval zebrafish”, just posted on bioRxiv (www.biorxiv.org/content/10.1...). (1/10)
biorxiv.org
Correlative light and electron microscopy reveals the fine circuit structure underlying evidence accumulation in larval zebrafish
Accumulating information is a critical component of most circuit computations in the brain across species, yet its precise implementation at the synaptic level remains poorly understood. Dissecting su...
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Portugues Lab @portugueslab.bsky.social · 02/04/2025
1/3 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.
nbb.cornell.edu
Department of Neurobiology and Behavior | Department of Neurobiology and Behavior
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German Neuroscience Society e.V. - NWG @neurowissg.bsky.social · 28/03/2025
Interested in understanding how brains control social behavior? Join S19 in Hall 101: ‘Visual processing in social behaviors’ to learn how animals&humans perceive and react to social motion, Speakers: Akhila Mudunuri, clara.howcroft.bsky.social, jlarsch.bsky.social, Winrich Freiwald, Marina Pavlova
clara.howcroft.bsky.social
Bluesky
This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
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Catherine Dulac @dulaclab.bsky.social · 05/03/2025
After last week publication from the lab on circuits of social isolation/satiety, today we publish a different line of research by @harriskaplan.bsky.social et al., on the development trajectories of hypothalamic POA cell types driving survival and social behavior. www.nature.com/articles/s41...
nature.com
Sensory input, sex and function shape hypothalamic cell type development - Nature
Paired transcriptomic and chromatin accessibility profiling are used to examine the developmental trajectories of neuronal populations in the hypothalamic preoptic region, including cell types with ke...
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Bence Ölveczky @olveczky.bsky.social · 04/03/2025
Excited to present the latest from the lab out today in Cell www.cell.com/cell/fulltex.... See Thread! 1/8
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Catherine Dulac @dulaclab.bsky.social · 27/02/2025
Please look at the 🧵 from @dingliu.bsky.social summarizing our discovery of brain-wide circuits controlling the emergence and satiation of social drive during social isolation vs grouping
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 02/03/2025
Rewiring an olfactory circuit by altering the combinatorial code of cell-surface proteins www.biorxiv.org/content/10.1101/202…
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David Schoppik @schoppik.com · 02/01/2025
Big paper from @paigel.bsky.social in our lab: Sensory feedback is always crucial for proper development, right? Wrong! Crazier still, the motor system is the slowest part of a developing reflex circuit! Surprises abound in this bluetorial c’mon along…. www.science.org/doi/10.1126/... 1/19
science.org
Sensation is dispensable for the maturation of the vestibulo-ocular reflex
Vertebrates stabilize gaze using a neural circuit that transforms sensed instability into compensatory counterrotation of the eyes. Sensory feedback tunes this vestibulo-ocular reflex throughout life....
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Inbal Shainer @ishainer.bsky.social · 13/02/2025
Excited to share our new paper in Nature! 'Transcriptomic neuron types vary topographically in function and morphology' explores how neurons in the zebrafish optic tectum exhibit diverse functions and shapes despite similar transcriptional profiles. 🔗 rdcu.be/d9GVM
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Inbal Shainer @ishainer.bsky.social · 12/12/2024
Come join us! Please repost 🙏🏼
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What’s up with Downes? @gbdownes.bsky.social · 28/01/2025
I'm thrilled to announce that our paper describing Marigold, a free machine learning-based webapp for zebrafish behavioral analysis, is officially published! Marigold features a user friendly graphical user interface to enable training of a neural network for analyzing behavioral recordings.
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