Johannes Felsenberg
@felsenberg.bsky.social
Neuroscientist at the FMI Basel, investigating memories and how to change them
Pinned
At the FMI Basel, we study how experiences that contradict learned expectations modify memory. Our work combines behavioral assays, genetic tools, and in vivo imaging in Drosophila to uncover how new information reshapes memory representations in the brain. Contact us to learn more.
Reposted by Johannes Felsenberg
There is still time to apply! See linked document for details.
Our new 2p microscope got freshly installed and tested this week and is now waiting for you :)
Our new 2p microscope got freshly installed and tested this week and is now waiting for you :)
📢 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
⏳ Apply by 28th February 2026
Details: www.haberkernlab.de/docs/ENPostd...
#neuroscience #academicjobs #postdoc
January 16, 2026 at 11:02 AM
There is still time to apply! See linked document for details.
Our new 2p microscope got freshly installed and tested this week and is now waiting for you :)
Our new 2p microscope got freshly installed and tested this week and is now waiting for you :)
Reposted by Johannes Felsenberg
Join leading scientists for a 3.5-day #LakeConference discussion on: "The Neurobiology of Mental Health" at the level of genes, cell types, organoids, circuits, networks and brain systems. Learn more & apply by January 31: https://lakeconferences.org/conf/1ed63fdb-de0c-4a56-a8b3-1f72f93d30ea
January 12, 2026 at 10:28 PM
Join leading scientists for a 3.5-day #LakeConference discussion on: "The Neurobiology of Mental Health" at the level of genes, cell types, organoids, circuits, networks and brain systems. Learn more & apply by January 31: https://lakeconferences.org/conf/1ed63fdb-de0c-4a56-a8b3-1f72f93d30ea
Reposted by Johannes Felsenberg
Your gut has a sex, and it matters! 🔥
In females, the ovary sends a relaxin hormone signal to enteric neurons, switching on gut enlargement and increased feeding after mating.
So excited my postdoc work is finally out as a preprint 🥳
www.biorxiv.org/content/10.6...
In females, the ovary sends a relaxin hormone signal to enteric neurons, switching on gut enlargement and increased feeding after mating.
So excited my postdoc work is finally out as a preprint 🥳
www.biorxiv.org/content/10.6...
📣First preprint of the lab📣 Did that really happen?😅
Enteric neurons, aka somatic postmitotic cells, must hold on to their sex identity tight, to deliver a tuned response to signals from the ovary that instruct the animal to engage sex-matched behavioural programmes.
www.biorxiv.org/content/10.6...
Enteric neurons, aka somatic postmitotic cells, must hold on to their sex identity tight, to deliver a tuned response to signals from the ovary that instruct the animal to engage sex-matched behavioural programmes.
www.biorxiv.org/content/10.6...
Genetic sex of enteric neurons enables ovarian relaxin to gate maternal gut plasticity
Animals must align intestinal plasticity and feeding with reproductive state, yet the checkpoint that gates these adaptations is unknown. Here we show that an ovary-to-enteric-neuron axis gates the on...
www.biorxiv.org
January 11, 2026 at 5:19 PM
Your gut has a sex, and it matters! 🔥
In females, the ovary sends a relaxin hormone signal to enteric neurons, switching on gut enlargement and increased feeding after mating.
So excited my postdoc work is finally out as a preprint 🥳
www.biorxiv.org/content/10.6...
In females, the ovary sends a relaxin hormone signal to enteric neurons, switching on gut enlargement and increased feeding after mating.
So excited my postdoc work is finally out as a preprint 🥳
www.biorxiv.org/content/10.6...
Reposted by Johannes Felsenberg
📣First preprint of the lab📣 Did that really happen?😅
Enteric neurons, aka somatic postmitotic cells, must hold on to their sex identity tight, to deliver a tuned response to signals from the ovary that instruct the animal to engage sex-matched behavioural programmes.
www.biorxiv.org/content/10.6...
Enteric neurons, aka somatic postmitotic cells, must hold on to their sex identity tight, to deliver a tuned response to signals from the ovary that instruct the animal to engage sex-matched behavioural programmes.
www.biorxiv.org/content/10.6...
Genetic sex of enteric neurons enables ovarian relaxin to gate maternal gut plasticity
Animals must align intestinal plasticity and feeding with reproductive state, yet the checkpoint that gates these adaptations is unknown. Here we show that an ovary-to-enteric-neuron axis gates the on...
www.biorxiv.org
January 11, 2026 at 3:32 PM
📣First preprint of the lab📣 Did that really happen?😅
Enteric neurons, aka somatic postmitotic cells, must hold on to their sex identity tight, to deliver a tuned response to signals from the ovary that instruct the animal to engage sex-matched behavioural programmes.
www.biorxiv.org/content/10.6...
Enteric neurons, aka somatic postmitotic cells, must hold on to their sex identity tight, to deliver a tuned response to signals from the ovary that instruct the animal to engage sex-matched behavioural programmes.
www.biorxiv.org/content/10.6...
Reposted by Johannes Felsenberg
Thrilled to start 2026 with our latest preprint, in which we dive into a dedicated forward-walking circuit in the fly brain: doi.org/10.64898/202.... This effort was spearheaded by the fantastic @chrisjdallmann.bsky.social with help from a bunch of talented people in the lab.
How does the brain control locomotion? In our new preprint, we uncover a brain circuit in Drosophila that controls forward walking independently of turning. This dedicated locomotor circuit enables flexible motor control and might reflect a shared principle across species. doi.org/10.64898/202...
January 5, 2026 at 5:15 PM
Thrilled to start 2026 with our latest preprint, in which we dive into a dedicated forward-walking circuit in the fly brain: doi.org/10.64898/202.... This effort was spearheaded by the fantastic @chrisjdallmann.bsky.social with help from a bunch of talented people in the lab.
Congrats to all the grant recipients!
Extra happy for Burak and Dennis from my lab.
And in this context: we’re hiring—open postdoc positions in the lab. Feel free to reach out if you’re interested.
Extra happy for Burak and Dennis from my lab.
And in this context: we’re hiring—open postdoc positions in the lab. Feel free to reach out if you’re interested.
In 2025, early-career researchers at the FMI secured highly competitive fellowships and grants, including postdoctoral fellowships from @embo.org and @hfspo.bsky.social, which support outstanding research. Read more about the winning projects here 👇 www.fmi.ch/news-events/...
Announcing recipients of early-career fellowships and grants
In 2025, early-career researchers at the FMI secured highly competitive fellowships and grants, including postdoctoral fellowships from the European Molecular Biology Organization and the Human Fronti...
www.fmi.ch
January 7, 2026 at 8:38 AM
Congrats to all the grant recipients!
Extra happy for Burak and Dennis from my lab.
And in this context: we’re hiring—open postdoc positions in the lab. Feel free to reach out if you’re interested.
Extra happy for Burak and Dennis from my lab.
And in this context: we’re hiring—open postdoc positions in the lab. Feel free to reach out if you’re interested.
Reposted by Johannes Felsenberg
📢 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
⏳ Apply by 28th February 2026
Details: www.haberkernlab.de/docs/ENPostd...
#neuroscience #academicjobs #postdoc
December 23, 2025 at 11:27 AM
📢 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
⏳ Apply by 28th February 2026
Details: www.haberkernlab.de/docs/ENPostd...
#neuroscience #academicjobs #postdoc
Carolin 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...
We’re hiring 2 postdocs—DM/email me for details. #Postdoc #Hiring
www.sciencedirect.com/science/arti...
Re-exposure to reward re-evaluates related memories
To adapt behavior in changing environments, animals must continuously re-evaluate previously learned associations. This flexibility of memory systems …
www.sciencedirect.com
December 20, 2025 at 6:49 PM
Carolin 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...
We’re hiring 2 postdocs—DM/email me for details. #Postdoc #Hiring
www.sciencedirect.com/science/arti...
Reposted by Johannes Felsenberg
I’m very grateful to the FMI, the tenure committee, inspiring colleagues, and all the hidden supporters who made this possible. Huge thanks to past and present group members for their curiosity and creativity. Excited for the next chapter.
Huge congratulations to @fzenke.bsky.social on his promotion to Senior Group Leader! His team uses AI-powered models of neural networks to uncover how dynamic brain connections enable new memories. Learn more about his research in this video👇 www.youtube.com/watch?v=8xDu...
How AI can help reveal the workings of the brain
YouTube video by The Friedrich Miescher Institute for Biomedical Research
www.youtube.com
December 19, 2025 at 7:44 AM
I’m very grateful to the FMI, the tenure committee, inspiring colleagues, and all the hidden supporters who made this possible. Huge thanks to past and present group members for their curiosity and creativity. Excited for the next chapter.
Reposted by Johannes Felsenberg
How do animals channel sensory information into motor pathways to generate flexible behavioral output? Excited to share a new preprint addressing this question by leveraging the new #maleCNS connectome, behavioral experiments, and in-vivo recordings: doi.org/10.64898/202.... A long🧵...
December 19, 2025 at 7:02 AM
How do animals channel sensory information into motor pathways to generate flexible behavioral output? Excited to share a new preprint addressing this question by leveraging the new #maleCNS connectome, behavioral experiments, and in-vivo recordings: doi.org/10.64898/202.... A long🧵...
Reposted by Johannes Felsenberg
Huge congratulations to @fzenke.bsky.social on his promotion to Senior Group Leader! His team uses AI-powered models of neural networks to uncover how dynamic brain connections enable new memories. Learn more about his research in this video👇 www.youtube.com/watch?v=8xDu...
How AI can help reveal the workings of the brain
YouTube video by The Friedrich Miescher Institute for Biomedical Research
www.youtube.com
December 16, 2025 at 10:55 AM
Huge congratulations to @fzenke.bsky.social on his promotion to Senior Group Leader! His team uses AI-powered models of neural networks to uncover how dynamic brain connections enable new memories. Learn more about his research in this video👇 www.youtube.com/watch?v=8xDu...
Reposted by Johannes Felsenberg
Deadline for this post-doc position in my lab extended to Jan 11th!
I'm looking to recruit a post-doc to help push forward our growing interests in insect ecotoxicology.
Apply here by Nov 30th!
(thanks for reposting)
career5.successfactors.eu/sfcareer/job...
Apply here by Nov 30th!
(thanks for reposting)
career5.successfactors.eu/sfcareer/job...
Career Opportunities: Posdoctoral researcher in toxin susceptibility and evolution of resistance in insects (22517)
career5.successfactors.eu
December 12, 2025 at 3:01 PM
Deadline for this post-doc position in my lab extended to Jan 11th!
Reposted by Johannes Felsenberg
Join us for the second seminar in the online Metabolism in Development and Physiology series next Thursday.
Two exciting talks lined up from different career stages.
Two exciting talks lined up from different career stages.
We’re back with the Metabolism in Development & Physiology online seminar series 🎉
Thu 11 Dec 2025, 16:00 CET
Speakers:
Heather Christofk (Professor, UCLA)
Yuanlingzi Tian (PostDoc, University of Glasgow)
Thu 11 Dec 2025, 16:00 CET
Speakers:
Heather Christofk (Professor, UCLA)
Yuanlingzi Tian (PostDoc, University of Glasgow)
December 3, 2025 at 5:24 PM
Join us for the second seminar in the online Metabolism in Development and Physiology series next Thursday.
Two exciting talks lined up from different career stages.
Two exciting talks lined up from different career stages.
Reposted by Johannes Felsenberg
🚨 We are recruiting a full-time Research Programmer to push forward several exciting machine learning projects in the lab!
Work on computational behavior and joint neural/behavior models. Start date flexible, can be a pre-grad-school position or longer term.
recruiting2.ultipro.com/SCR1003TSRI/...
Work on computational behavior and joint neural/behavior models. Start date flexible, can be a pre-grad-school position or longer term.
recruiting2.ultipro.com/SCR1003TSRI/...
recruiting2.ultipro.com
December 10, 2025 at 4:40 PM
🚨 We are recruiting a full-time Research Programmer to push forward several exciting machine learning projects in the lab!
Work on computational behavior and joint neural/behavior models. Start date flexible, can be a pre-grad-school position or longer term.
recruiting2.ultipro.com/SCR1003TSRI/...
Work on computational behavior and joint neural/behavior models. Start date flexible, can be a pre-grad-school position or longer term.
recruiting2.ultipro.com/SCR1003TSRI/...
Absolute rockstar!
Incredibly excited to share that we've been awarded an ERC Consolidator Grant to reach new depths in our memory research! @erc.europa.eu #ERCCoG @biozentrum.unibas.ch @unibas.ch
Congratulations to our Professors Claudia Keller Valsecchi and Flavio Donato, who have both been awarded prestigious ERC Consolidator Grants. @flaviodonato82.bsky.social @kellervalsecchi.bsky.social @erc.europa.eu uropa.eu #ERCCoG More about their projects 👇 www.biozentrum.unibas.ch/news/detail/...
December 10, 2025 at 6:31 AM
Absolute rockstar!
Reposted by Johannes Felsenberg
Emergence and Self-organisation across biological scales! I hope you are ready for next year conference! It will be an incredible event April 20-22 2026. The first of many #LakeConference organised by
@ehannezo.bsky.social @alleninstitute.org and James Sharpe @embl.org
@ehannezo.bsky.social @alleninstitute.org and James Sharpe @embl.org
#CellBio community, this one is for you! Applications are open for the #LakeConference on Modeling Life from Cells to Tissues – co-hosted with Circuit Neuroscience Basel!
📆 April 20-22, 2026
📍 Seattle, USA
🔬 All career stages welcomed.
Apply to attend by 12/12: alleninstitute.org/events/aics-...
📆 April 20-22, 2026
📍 Seattle, USA
🔬 All career stages welcomed.
Apply to attend by 12/12: alleninstitute.org/events/aics-...
2026 Lake Conference
Join the Allen Institute for Cell Science and Circuit Neuroscience Basel in Seattle, Washington, April 20–22, 2026, for a 3 day conference, Modeling...
alleninstitute.org
November 26, 2025 at 10:58 AM
Emergence and Self-organisation across biological scales! I hope you are ready for next year conference! It will be an incredible event April 20-22 2026. The first of many #LakeConference organised by
@ehannezo.bsky.social @alleninstitute.org and James Sharpe @embl.org
@ehannezo.bsky.social @alleninstitute.org and James Sharpe @embl.org
Reposted by Johannes Felsenberg
Applications are open for the #LakeConference on Modeling Life from Cells to Tissues – co-hosted with Circuit Neuroscience Basel!
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
December 7, 2025 at 4:47 PM
Applications are open for the #LakeConference on Modeling Life from Cells to Tissues – co-hosted with Circuit Neuroscience Basel!
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
Reposted by Johannes Felsenberg
Apply for a PhD in Paris!! A project to come and work with me and my team at the GutSense lab included in the list! 🪰🧠⛽
📚 The international DIM C-BRAINS PhD program is back!
Up for grabs: 7 fully funded, 3-year doctoral contracts in the Île-de-France region, 3 of which will be hosted by Paris Brain Institute.
📆 Application deadline: February 1, 2026.
👉 Find out more: parisbraininstitute.org/dim-c-brains...
Up for grabs: 7 fully funded, 3-year doctoral contracts in the Île-de-France region, 3 of which will be hosted by Paris Brain Institute.
📆 Application deadline: February 1, 2026.
👉 Find out more: parisbraininstitute.org/dim-c-brains...
The DIM C-BRAINS international PhD program opens its 2026 call for applications. | Paris Brain Institute
The international DIM C-BRAINS PhD program is back. Up for grabs: 7 fully funded, 3-year doctoral contracts in the Île-de-France region, 3 of which will be hosted by the Institut du Cerveau. Applicati...
parisbraininstitute.org
December 5, 2025 at 5:13 PM
Apply for a PhD in Paris!! A project to come and work with me and my team at the GutSense lab included in the list! 🪰🧠⛽
Reposted by Johannes Felsenberg
FMI group leader Margherita Turco has been awarded more than 1 million USD from the @gatesfoundation.bsky.social to explore how micronutrients such as folate and iron could prevent life-threatening complications caused by a malfunctioning placenta. www.fmi.ch/news-events/...
Margherita Turco wins 1M grant to study how nutrients support placental health
FMI group leader Margherita Turco has been awarded more than 1 million USD from the Gates Foundation to explore how micronutrients such as folate and iron could prevent life-threatening complications ...
www.fmi.ch
December 5, 2025 at 7:26 AM
FMI group leader Margherita Turco has been awarded more than 1 million USD from the @gatesfoundation.bsky.social to explore how micronutrients such as folate and iron could prevent life-threatening complications caused by a malfunctioning placenta. www.fmi.ch/news-events/...
Reposted by Johannes Felsenberg
📢 Please help spread the word: We’re hiring a Head of Student & Postdoc Affairs to coordinate our international PhD program, provide guidance & career counseling, lead training programs, collaborate on EDI initiatives, and manage alumni relations. Apply at www.fmi.ch/education-ca...
December 4, 2025 at 7:23 AM
📢 Please help spread the word: We’re hiring a Head of Student & Postdoc Affairs to coordinate our international PhD program, provide guidance & career counseling, lead training programs, collaborate on EDI initiatives, and manage alumni relations. Apply at www.fmi.ch/education-ca...
Reposted by Johannes Felsenberg
Last week, FMIers got together for a board-game night with snacks, drinks, and lots of laughs. Thanks to everyone who brought their favourite games and made it such a fun mid-week break. We can’t wait for the next one!
December 2, 2025 at 9:32 AM
Last week, FMIers got together for a board-game night with snacks, drinks, and lots of laughs. Thanks to everyone who brought their favourite games and made it such a fun mid-week break. We can’t wait for the next one!
Reposted by Johannes Felsenberg
Applications are open for the #LakeConference on Modeling Life from Cells to Tissues – co-hosted with Circuit Neuroscience Basel!
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
November 29, 2025 at 3:59 PM
Applications are open for the #LakeConference on Modeling Life from Cells to Tissues – co-hosted with Circuit Neuroscience Basel!
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
📆 April 20-22, 2026
📍 Seattle, USA
🧠 All career stages welcomed.
Apply to attend by December 12: https://alleninstitute.org/events/aics-lake-2026/
Reposted by Johannes Felsenberg
1/6 New preprint 🚀 How does the cortex learn to represent things and how they move without reconstructing sensory stimuli? We developed a circuit-centric recurrent predictive learning (RPL) model based on JEPAs.
🔗 doi.org/10.1101/2025...
Led by @atenagm.bsky.social @mshalvagal.bsky.social
🔗 doi.org/10.1101/2025...
Led by @atenagm.bsky.social @mshalvagal.bsky.social
November 27, 2025 at 8:24 AM
1/6 New preprint 🚀 How does the cortex learn to represent things and how they move without reconstructing sensory stimuli? We developed a circuit-centric recurrent predictive learning (RPL) model based on JEPAs.
🔗 doi.org/10.1101/2025...
Led by @atenagm.bsky.social @mshalvagal.bsky.social
🔗 doi.org/10.1101/2025...
Led by @atenagm.bsky.social @mshalvagal.bsky.social
Reposted by Johannes Felsenberg
Unsure about your postdoc future in the US? Consider Southwest Germany: www.uni-konstanz.de/zukunftskoll...
Early Career Rescue Fellowship
www.uni-konstanz.de
November 19, 2025 at 9:06 AM
Unsure about your postdoc future in the US? Consider Southwest Germany: www.uni-konstanz.de/zukunftskoll...
Reposted by Johannes Felsenberg
🚨 Postdoc openings!
We’re looking for postdocs excited about sleep, synapses & cellular neurophysiology (fly or mouse).
Yes, we also have mouse projects!
See details: www.flysleeplab.com/positions
We’re looking for postdocs excited about sleep, synapses & cellular neurophysiology (fly or mouse).
Yes, we also have mouse projects!
See details: www.flysleeplab.com/positions
Positions | flysleeplab
www.flysleeplab.com
November 15, 2025 at 3:22 PM
🚨 Postdoc openings!
We’re looking for postdocs excited about sleep, synapses & cellular neurophysiology (fly or mouse).
Yes, we also have mouse projects!
See details: www.flysleeplab.com/positions
We’re looking for postdocs excited about sleep, synapses & cellular neurophysiology (fly or mouse).
Yes, we also have mouse projects!
See details: www.flysleeplab.com/positions