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Mikkel Roald-Arbøl

@roald-arboel.com
1K followers 915 following 301 posts

Thinking about what brains are doing and how they ended up doing it. 🇩🇪 Postdoc in @sleeblab.bsky.social 🪲 Quantitative ethology, neuroethology and behavioural ecology 🔧 Developing open science software (mostly #rstats) and hardware

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Reposted by Mikkel Roald-Arbøl
Harris Kaplan @harriskaplan.bsky.social · 14/08/2026
I'm thrilled to announce the opening of the Kaplan lab at the University of Virginia @uvabio.bsky.social ! We are a neuroscience lab aiming to define circuits underlying naturalistic behaviors in infants and adults. We're actively recruiting students and postdocs. Learn more at kaplan-lab.org.
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Mikkel Roald-Arbøl @roald-arboel.com · 07/07/2026
We do an awful lot of looooong video recordings in our lab and have long wanted an easy way to clip, compress and combine videos for our workflows. So here's #croppy! 🦀 I hope others will find it useful too - I'd love to hear if you do! And would appreciate if you give it a star on Github! 🌟
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Mikkel Roald-Arbøl @roald-arboel.com · 07/07/2026
We do an awful lot of looooong video recordings in our lab and have long wanted an easy way to clip, compress and combine videos for our workflows. So here's #croppy! 🦀 I hope others will find it useful too - I'd love to hear if you do! And would appreciate if you give it a star on Github! 🌟
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Horst Obenhaus @octoscience.bsky.social · 29/06/2026
🌟 NEW OCTRON RELEASE! 🌟 Want to track your animals using the command line? You can now train models and predict videos with single prompts in a terminal! Ideal for batch jobs, headless servers, and remote machines. Big shout-out to @roald-arboel.com for helping with this release!
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SLEEB Lab Bonn @sleeblab.bsky.social · 23/06/2026
Off to the caves! We’re finally back in the field: filming sleepy cave spiders! 🕷️🕸️ Let’s see what we find! #fieldwork #animalsleep #caves @roald-arboel.com @nadjageiger.bsky.social @roesslerdaniela.bsky.social @unibonn.bsky.social
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Mackenzie Weygandt Mathis @trackingactions.bsky.social · 01/06/2026
🔥 Our latest work is state of the art 3D pose estimation, with video analysis from a single camera! 🎥 Just train with 3D data, and then only 1 camera is needed! 🖤 Presented this week at #CVPR2026 by lead author Ti Wang! Please repost🩵🙏🏼 xiu-cs.github.io/FMPose3D/ arxiv.org/abs/2602.05755
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Nadja Geiger @nadjageiger.bsky.social · 01/06/2026
New paper alert!🕷️✨ Tiny spider. Shiny abdomen. Suspiciously wiggly bum. In our new study, we asked what abdomen bobbing in this jumping spider is really all about: Cute? Yes. Meaningful? Let’s find out...! [1/8] @unibonn.bsky.social link.springer.com/article/10.1007/s00265-026-03745-1
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Daniela Rößler @roesslerdaniela.bsky.social · 31/05/2026
🚨 TWERK ALERT 🚨 New publication from @sleeblab.bsky.social ! This was a very fun project to write up, co-lead by @nadjageiger.bsky.social and Chiara Hirschkorn. If you are interested why these spiders might bob their abdomen: link.springer.com/article/10.1... (Short thread following soon)
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Talmo Pereira @talmo.bsky.social · 05/05/2026
We tracked mice in space! This video shows our estimate of their self-induced centripetal force during circling in 3D 👩‍🚀 Preprint thread below 👇
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John Tuthill @tuthill.bsky.social · 04/05/2026
New preprint: Whole-body 3D kinematics of freely behaving 𝐷𝑟𝑜𝑠𝑜𝑝ℎ𝑖𝑙𝑎 New tech from @blobology.bsky.social & others at @hhmijanelia.bsky.social, which @ispizua.bsky.social and @elliottabe.bsky.social used to gain insight into 3D structure of locomotion & courtship www.biorxiv.org/content/10.6...
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Mark Histed @markhisted.org · 29/03/2026
The hardest part of science is posing the right question, not answering it.
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Datta Lab @dattalab.bsky.social · 25/03/2026
Have you ever wondered why mice do what they do when they are free to do whatever they want? Check out our latest (and this slightly delayed thread about our recent paper, led by Caleb Weinreb and friends...) www.cell.com/neuron/fullt...
cell.com
Spontaneous behavior is a succession of self-directed tasks
Weinreb et al. reveal a hierarchy of timescales in mouse behavior, including low-level syllables and high-level behavioral states. States and syllables are encoded in different brain areas. Prefrontal...
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Biological Theory @biologicaltheory.bsky.social · 06/03/2026
➡️ New Classics in Biological Theory article out! ⬅️ Revisiting Rosenblueth, Wiener, and Bigelow’s “Behavior, Purpose and Teleology” (1943) by Auguste Nahas (@augustenahas.bsky.social) Open access, also to Rosenblueth et al. (1943) (supplementary material) on: link.springer.com/article/10.1...
link.springer.com
Revisiting Rosenblueth, Wiener, and Bigelow’s “Behavior, Purpose and Teleology” (1943) - Biological Theory
Biological Theory - This article examines Rosenblueth, Wiener, and Bigelow’s 1943 article “Behavior, Purpose and Teleology”, which is widely remembered both as the foundational...
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Horst Obenhaus @octoscience.bsky.social · 06/03/2026
BIG UPDATES! OCTRON now supports the new SAM3 models (alongside SAM2)! We’ve also added a global switch for Detection vs. Segmentation: Use the same annotations to train either lightweight detection or full segmentation models. Plus, we’ve added support for the new YOLO26 models. ⤵️ 1/12
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 06/03/2026
Ants! Ants! Ants! 792 species of ants (!!!!!!) 3D scanned (high-throughput synchrotron X-ray microtomography) in luxurious detail: spectrum.ieee.org/3d-scanning-... paper: www.nature.com/articles/s41... website: www.antscan.info Phenomenal.
spectrum.ieee.org
Antscan’s 3D Atlas Reveals Ant Anatomy Like Never Before
How does a particle accelerator help us understand ants like never before?
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George Kafetzis @gkafetzis.bsky.social · 23/02/2026
Out now in @currentbiology.bsky.social! A dive into the deep history of vertebrate vision, together with @mikebok.bsky.social, @neurofishh.bsky.social and @denilsson.bsky.social Photo credit : Vasilis Karkalas
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Mikkel Roald-Arbøl @roald-arboel.com · 23/02/2026
Using BORIS to annotate animal behaviour and want a model to automate it? 🐦 DL classifiers need short, focused clips — not hour-long recordings. 𝗯𝗼𝗿𝗶𝘀-𝗰𝗹𝗶𝗽 extracts those from your `.boris` files, ready for BehaveAI, Octron, and friends. 🤖 roald-arboel.com/boris-clip/ #ComputationalEthology
roald-arboel.com
Index - boris-clip
Extract video clips from BORIS behavioural annotation files
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Jolyon Troscianko @jtroscianko.bsky.social · 21/02/2026
Our BehaveAI paper has just come out! Easy & effective tracking & behavioural classification, even with tiny (2px), fast moving, camouflaged objects. Paper: doi.org/10.1371/jour... Download: github.com/troscianko/B... @uniexecec.bsky.social @kevinjgaston.bsky.social @jimamclgalloway.bsky.social
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Insect Welfare Research Society @insectwrs.bsky.social · 17/02/2026
The @asab.org animal behavior ethics guidelines now reference our work on humane husbandry and ethical study design for insects and decapods! See the full guidelines: www.sciencedirect.com/science/arti...
sciencedirect.com
Guidelines for the ethical treatment of nonhuman animals in behavioural research and teaching
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Mikkel Roald-Arbøl @roald-arboel.com · 29/01/2026
This workshop was one of the highlights of my PhD! Highly recommend applying! Amazing science and amazing people allround - and all (reasonable) expenses paid!
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The R Foundation @r-foundation.bsky.social · 22/01/2026
We are responding to this call for evidence: ec.europa.eu/info/law/bet... Do you have concrete examples of the added value of #Rstats in the public or private sectors? Include the most important factors (risk, lock-in, security, innovation...) to assess the added value. Thanks!
ec.europa.eu
European Commission - Have your say
European Commission - Have your say
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Mikkel Roald-Arbøl @roald-arboel.com · 15/01/2026
Does anyone here use or have used EthoVision XT and/or ANY-Maze, and could possibly share some sample data with me? I'm making functions for importing movement data into R, and these are tools that I have yet to cover, but I need some data to help me on! #animalbehaviour #neuroskyence
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Antoine Bergel @antbergel.bsky.social · 29/12/2025
⚠️ New paper alert and what a way to end 2025! 🎉 Happy to share our story “Sleep-dependent infraslow rhythms are evolutionarily conserved across reptiles and mammals.” published today in Nature Neuroscience. Sleeping dragons 🦎 and functional ultrasound! Read the full paper here: rdcu.be/eWJHb 1/8
rdcu.be
Sleep-dependent infraslow rhythms are evolutionarily conserved across reptiles and mammals
Nature Neuroscience - Bergel et al. show that an infraslow rhythm connecting the brain and body during sleep is shared by lizards, mammals and birds, revealing an ancestral process and reshaping...
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The Transmitter @thetransmitter.bsky.social · 03/12/2025
Machine learning should not be a replacement for human judgment but rather help us embrace the various assumptions and interpretations that shape behavioral research, write Nedah Nemati and Matthew Whiteway. #neuroskyence www.thetransmitter.org/behavioral-n...
thetransmitter.org
Beyond the algorithmic oracle: Rethinking machine learning in behavioral neuroscience
Machine learning should not be a replacement for human judgment but rather help us embrace the various assumptions and interpretations that shape behavioral research.
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Horst Obenhaus @octoscience.bsky.social · 23/12/2025
Do you love quantifying animal behavior as much as we do? We have just the tool for you! Presenting #OCTRON - a pipeline that helps you create rich annotation data and enables training of custom segmentation models. Have a look, particularly if you work with non-model / invertebrate organisms!
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Mikkel Roald-Arbøl @roald-arboel.com · 28/11/2025
About to do a major documentation revamp for an R package. Does anyone know whether it's possible to use Quarto `.qmd` files for vignettes and articles? #rstats
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Rune W. Berg @runewberg.bsky.social · 09/11/2025
New preprint: Neural manifolds that orchestrate walking and stopping Here we develop a new theory for neural generation of walking and how it can stop- Next we test the theory using Neuropixels probes in the lumber spinal cord of freely moving rats. See more: www.biorxiv.org/content/10.1...
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Mikkel Roald-Arbøl @roald-arboel.com · 03/10/2025
✨ Super stoked to announce that I will soon be joining the #SLEEB-Lab with @roesslerdaniela.bsky.social at @unibonn.bsky.social! Really excited for what’s to come!🕷️💤
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The New York Times @nytimes.com · 01/10/2025
Breaking News: Jane Goodall, one of the world’s most revered conservationists, died at 91. Her discoveries in the 1960s about how chimpanzees behaved in the wild broke new ground and represented what was called “one of the Western world’s great scientific achievements.” nyti.ms/42kpGxt
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Kris Jensen @kristorpjensen.bsky.social · 24/09/2025
I’m super excited to finally put my recent work with @behrenstimb.bsky.social on bioRxiv, where we develop a new mechanistic theory of how PFC structures adaptive behaviour using attractor dynamics in space and time! www.biorxiv.org/content/10.1...
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Ann Kennedy @antihebbiann.bsky.social · 18/09/2025
And we are live! Excited to announce the 2025 Multi-Agent Behavior Challenge on cross-lab supervised action recognition in mice 🐁🐀🖱️ Running on Kaggle until December 15th, with a $50,000 prize pool going to the top five submissions! www.kaggle.com/competitions...
https://www.kaggle.com/competitions/MABe-mouse-behavior-detection
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Dr. Nick Posegay @nposegay.northsky.social · 17/09/2025
I'm sorry, worldwide, irrevocable, non-exclusive, transferable permission to my voice and likeness? For what now? In any manner for any purpose??? This is in academia/.edu's new ToS, which you're prompted to agree to on login. Anyway I'll be jumping ship. You can find my stuff at hcommons.org.
By creating an Account with Academia.edu, you grant us a worldwide, irrevocable, non-exclusive, transferable license, permission, and consent for Academia.edu to use your Member Content and your personal information (including, but not limited to, your name, voice, signature, photograph, likeness, city, institutional affiliations, citations, mentions, publications, and areas of interest) in any manner, including for the purpose of advertising, selling, or soliciting the use or purchase of Academia.edu's Services.
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George Kafetzis @gkafetzis.bsky.social · 12/09/2025
👁️The retina — strikingly conserved across vertebrates, but an oddity among bilaterians! So how did it evolve? With @mikebok.bsky.social, @neurofishh.bsky.social and @denilsson.bsky.social, we argue that retinal complexity may 𝑝𝑟𝑒𝑑𝑎𝑡𝑒 𝑡ℎ𝑒 𝑒𝑦𝑒 𝑖𝑡𝑠𝑒𝑙𝑓. www.biorxiv.org/content/10.1... 1/n
media.tenor.com
a black and white dog is sitting on a couch with its tongue sticking out .
ALT: a black and white dog is sitting on a couch with its tongue sticking out .
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Randall Munroe @xkcd.com · 11/09/2025
Biology Department xkcd.com/3140/
Comic. [Building with large sign in front of it[ SIGN: Welcome to the *Biology Department* It has been [changeable sign: 3] days since we discovered something existentially horrifying about bugs that makes you question your whole reality
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Daniela Rößler @roesslerdaniela.bsky.social · 06/09/2025
🚨 PhD alert! IMPRS brain & behavior in Bonn just opened their calls for applications. Great PhD funding opportunities. Check it out! PS- I just joined their faculty, meaning you could do a rotation in my lab or even a PhD with me on spider sleep 🙃 Apply! 🚨
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Björn Brembs @brembs.mastodon.social.ap.brid.gy · 03/09/2025
This should have been big news! Ten funding agencies from eight European countries have pledged to support a public infrastructure that is poised to replace academic journals: FWF 🇦🇹 RCN 🇳🇴 Forte 🇸🇪 ARIS 🇸🇮 SRC 🇸🇪 FCT 🇵🇹 CSIC 🇪🇸 DFG 🇩🇪 Formas 🇸🇪 ANR 🇫🇷 Only two of them issued press releases in […]
mastodon.social
Original post on mastodon.social
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Jenna Kline @jennakline.bsky.social · 29/08/2025
New paper: Drones & Computer Vision for Collective Animal Behavior 🐾 We show how edge AI + smart mission design turn drone footage into real-time behavior insights—with less disturbance. 🎥 Video Abstract: youtu.be/0DErP4Z5C7Q 📄 Paper: doi.org/10.1111/2041...
youtu.be
Studying collective animal behaviour with drones and computer vision
YouTube video by Jenna Kline
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Mikkel Roald-Arbøl @roald-arboel.com · 27/08/2025
#rstats folks, is anyone aware of whether it is possible to plot data loaded with @duckdb.org - say I want to generate a density plot on a data set that's too large for in-memory?
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Micah G. Allen @micahgallen.com · 27/08/2025
Are interoception and mental health linked? Many assume so, with interoception even described as a psychiatric “p-factor.” But in our latest preprint, we were surprised to find little evidence for such a connection. www.medrxiv.org/content/10.1... 🧵 Thread with our reflections on the matter 👇
medrxiv.org
Interoceptive Ability is Unrelated to Mental Health Symptoms: Evidence From a Large Scale Multi-Domain Psychophysical Investigation
Interoception-the sensing and perception of the internal viscera-is widely cast as a transdiagnostic mechanism linking brain-body interaction to mental illness. Prevailing models propose that altered ...
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Mikkel Roald-Arbøl @roald-arboel.com · 26/08/2025
Could someone try to submit a fellowship to the #EU #Fellowship Database - and give some feedback on the form: Is everything clear? Have I missed anything? Feel free to just try it out with a fictive fellowship (please label the title as "FICTIVE"). opnform.com/forms/eu-fel... #ECR #postdoc
opnform.com
EU Fellowships
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Mikkel Roald-Arbøl @roald-arboel.com · 25/08/2025
Inspired by @deniswirtz.bsky.social and team, I'm collating a database of #PhD and #postdoc fellowships in the #EU. I'm standardising the information an entry needs, making it easier to (1) search and (2) contribute - and I would appreciate input, especially from other #ECR! Please share! 1/3
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Mikkel Roald-Arbøl @roald-arboel.com · 25/08/2025
Inspired by @deniswirtz.bsky.social and team, I'm collating a database of #PhD and #postdoc fellowships in the #EU. I'm standardising the information an entry needs, making it easier to (1) search and (2) contribute - and I would appreciate input, especially from other #ECR! Please share! 1/3
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Mikkel Roald-Arbøl @roald-arboel.com · 21/08/2025
Fellow #neuro / #animalbehaviour video tracking nerds: If you were to buy a brand new computer, your dream configuration (within reasonability), what would you go for and why? Would love some specs, models, GPU… asking for a friend (maybe 👀).
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Mikkel Roald-Arbøl @roald-arboel.com · 21/08/2025
Fellow #neuro / #animalbehaviour video tracking nerds: If you were to buy a brand new computer, your dream configuration (within reasonability), what would you go for and why? Would love some specs, models, GPU… asking for a friend (maybe 👀).
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Ralph Emilio Peterson @ralphpeterson.bsky.social · 25/07/2025
New preprint!

 tl;dr — We ran around late at night to record wild rats in NYC and figured out how to quantify their behavior and environment. 🧵 w/ Dima Batenkov, @zamakany.bsky.social, Emily Mackevicius www.biorxiv.org/content/10.1...
biorxiv.org
Computational Urban Ecology of New York City Rats
Urban rats are highly adaptable, thriving in the dynamic and often inhospitable conditions of modern cities. Despite substantial mitigation efforts, they remain an enduring presence in urban environme...
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Mikkel Roald-Arbøl @roald-arboel.com · 22/07/2025
I’m thinking of writing a #Julia package and then writing an #Rstats package that provides an interface to the functions. Does anyone know which packages/frameworks that are best for this in 2025? Eyeing {JuliaCall}. Does anyone have experience with this, pointers or other things to consider?
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Borjan (Boki) Milinković @neuromorphicboki.bsky.social · 20/07/2025
📜🪇[PUBLISHED]: NEW PREPRINT!🪇📜 I am incredibly excited to announce that we have published our paper on how "Dynamical independence reveals anaesthetic specific fragmentation of emergent structure in neural dynamics" w@thomasandrillon.bsky.social @anilseth.bsky.social Barnett, Carter Strap in! 1/n
biorxiv.org
Dynamical independence reveals anaesthetic specific fragmentation of emergent structure in neural dynamics
Conscious experience depends on the coordinated activity of neural processes that span multiple scales--from synapses to whole-brain dynamics. A recently introduced measure, dynamical independence, id...
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Mikkel Roald-Arbøl @roald-arboel.com · 18/07/2025
What are y'all learning that is fundamentally new to you? Having never done any geology, I'm currently having a blast going through a Geology 101 with Shawn Willsey on YouTube while travelling through the Andes. Next up will be some complexity courses from @sfiscience.bsky.social.
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Mark A. Hanson @hansonmark.bsky.social · 10/07/2025
The "reproducibility crisis" in science constantly makes headlines. Repro efforts are often limited. What if you could assess reproducibility of an entire field? That's what @brunolemaitre.bsky.social et al. have done. Fly immunity is highly replicable & offers lessons for #metascience A 🧵 1/n
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Iris van Rooij 💭 @irisvanrooij.bsky.social · 12/07/2025
“The goal of academic training is not to solve problems as efficiently and quickly as possible, but to develop skills for identifying and dealing with novel problems, which have never been solved before.”
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