Benjamin Judkewitz
@benjulab.bsky.social
2.5K followers 340 following 23 posts
brainwide circuits, animal communication, danionella, microscopy https://jlab.berlin
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benjulab.bsky.social
We’re seeking a postdoc/student excited about animal communication, brain-wide circuits, microscopy, singing fish (Danionella), wacky ideas and who likes to: get things done, experiment, analyze, ask, learn, help and cooperate. jlab.berlin
Reposted by Benjamin Judkewitz
ipnp.bsky.social
Congratulations to Urs Lucas Bohm, junior leader a @ipnp.bsky.social, for his latest achievement: he is recipient of the ATIP-Avenir award for his work on spinal cord network contribution to motor behaviors, using voltage imaging techniques in zebrafish! Keep going, Urs! @inserm.fr #motordisease
Reposted by Benjamin Judkewitz
owenrandlett.bsky.social
This is great -- thanks for your efforts and the documentation. We've got it up and running for tERK stains. Some kinks for us work out but running registrations in a few seconds is so very satisfying!
benjulab.bsky.social
I‘m really glad it works for you and thanks a lot for sharing! Watching this video is satisfying to me, too!
benjulab.bsky.social
Haven't tried but it might work. Is the part at the same resolution as the whole? Same-to-same or same-to-similar sample? Consider posting photos & details here: github.com/danionella/w...
Warpfield determines transformations between 3D volumes only, and can apply them to 3D volumes and coordinates.
benjulab.bsky.social
Who wouldn't want to do that?
Unfortunately I don't think this would be a good tool for it. You probably need many discontinuities and flips to go from car to artichoke. Although not (yet) strictly enforced, this library tends to generate smooth fields and local displacements.
benjulab.bsky.social
Since alt-text doesn't seem to render for videos, here are the video credits: Registration of artichoke 3D MRI using warpfield. Data by Alexandr Khrapichev, Oxford (source: Wellcome Collection, CC BY).
benjulab.bsky.social
Introducing warpfield, an open source Python library for GPU-accelerated non-rigid 3D registration. Warps and aligns gigavoxel volumes within seconds (not hours). For 3D microscopy, region-to-region and cell-to-cell matching.
A collaboration with @mh123.bsky.social 🚀
github.com/danionella/w...
Reposted by Benjamin Judkewitz
katietschida.bsky.social
Another study to share, led by my grad student Nicole Pranic! Before diving in, I'll add that Nicole (who is clever, tenacious, and interested in neural changes that underlie developmental changes in social behaviors) is looking for a post-doc position! Please RT!

www.biorxiv.org/content/10.1...
Vocal ontogeny in Mus musculus
Infants of many species produce distress calls when in need of parental care. As they mature and gain independence from caregivers, juveniles stop producing infant calls and begin producing adult-like...
www.biorxiv.org
Reposted by Benjamin Judkewitz
benjulab.bsky.social
We’re seeking a postdoc/student excited about animal communication, brain-wide circuits, microscopy, singing fish (Danionella), wacky ideas and who likes to: get things done, experiment, analyze, ask, learn, help and cooperate. jlab.berlin
Reposted by Benjamin Judkewitz
dinanthos.bsky.social
Interested in understanding how things work? In particular the tools you use to study the brain? Join us at TENSS 2025 where we brainstorm ideas, build and debug microscopes, electrophysiology and behavior rigs amidst the picturesque Transylvanian hills! tenss.ro
Apply by: February 16th!
Reposted by Benjamin Judkewitz
ptrrupprecht.bsky.social
If you want to understand the brain, should you work as a neuroscientist in the lab? Or teach the subject for students? Or simply read textbooks and papers while having a normal job? In this blog post, I share some thoughts on this topic. gcamp6f.com/2025/01/08/a...
Reposted by Benjamin Judkewitz
portugueslab.bsky.social
1/3 How does visual input affect the heading direction (HD) network?

In our latest lab preprint, Ryosuke presents "visual landmarks" to larval zebrafish and shows that the HD network tethers to the visual environment. The experiments are again inspired by the beautiful recent work in Drosophila.
Reposted by Benjamin Judkewitz
urslucasboehm.bsky.social
job offer! I am looking for a postdoc to join the nascent team. Come work with us to build microscopes and study spinal cord circuits. #ZebrafishCareers
job offer for a postdoctoral position working on zebrafish spinal cord imaging
Reposted by Benjamin Judkewitz
ishainer.bsky.social
Come join us! Please repost 🙏🏼
benjulab.bsky.social
Nice! Do you expect the same effect for 2D and 3D interpolations?
benjulab.bsky.social
High-speed 3D random access two-photon imaging at ≥ 300 kHz – with SPARCLS: opg.optica.org/optica/fullt...

By the outstanding @carolineberlage.bsky.social and team, including @urslucasboehm.bsky.social, @andrewplested.bsky.social et al.
benjulab.bsky.social
Could you add me, please?
benjulab.bsky.social
Next stop: brain. We are interested in brain-wide circuits underlying acoustic communication (from hearing to sound production), which we currently study with the volumetric whole-brain microscope developed by @mh123.bsky.social and Jörg Henninger. www.nature.com/articles/s41...
benjulab.bsky.social
How do they know who is talking? Sound localization by fish was long considered physically impossible, and yet it was shown behaviorally. With underwater sound illusions and laser vibrometry, Johannes Veith and @tomchaigne.bsky.social identified an underlying mechanism www.nature.com/articles/s41...
The mechanism for directional hearing in fish - Nature
A study demonstrates that the fish Danionella cerebrum is able to discriminate the direction of sound by comparing the relative phase of pressure and particle motion.
www.nature.com
benjulab.bsky.social
Danionella clicks can reach 140 dB! How can a tiny fish under 12 mm produce such unusually loud sounds? Verity Cook found a unique sound production apparatus that shoots a specialized cartilage against the swim bladder, accelerating at over 20000 m/s^2: www.pnas.org/doi/10.1073/...
Video with sound