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Johannes Roth

@rothj.bsky.social
59 followers 26 following 5 posts

PhD student with Martin Hebart at MPI CBS & Uni Gießen | Interested in making large-scale vision fMRI studies more efficient and effective | jroth.space

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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 25/09/2026
What is the nature of universal representations in AI models, and what determines whether they emerge? Our paper accepted at #neurips2026 led by @florianmahner.bsky.social & @rothj.bsky.social addressed these questions comparing 162 vision models, with intriguing results. arxiv.org/abs/2605.13675 🧵
arxiv.org
Characterizing Universal Object Representations Across Vision Models
Deep neural networks trained with different architectures, objectives, and datasets have been reported to converge on similar visual representations. However, what remains unknown is which visual prop...
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Sander van Bree @sandervanbree.bsky.social · 12/08/2026
Excited to share our preprint! w/ @martinhebart.bsky.social To understand how primates visually process objects in the world, we rely on both research in human and macaque IT. But what representations of object space are actually shared between them? biorxiv.org/content/10.6... Quick thread 🧵
biorxiv.org
Shared and Distinct High-Dimensional Object Spaces in Human and Macaque Inferotemporal Cortex
Human and macaque studies of inferotemporal cortex (IT) have shaped our understanding of object vision, yet the extent of their representational alignment and the precise nature of this correspondence...
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 19/05/2026
We are excited to open the re:vision initiative, a community-driven initiative for replicating and generalizing findings in visual neuroscience, based on the LAION-fMRI dataset. re-vision-initiative.org Why this initiative and why would you want to participate? 🧵
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 18/05/2026
Today at #VSS2026 we are introducing re:vision, a community driven replication/generalization initiative based on our newly released LAION-fMRI dataset. Come to the satellite at 2pm to learn more about it & why you may want to participate! The room Blue Heron is in the upstairs region of the lobby.
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 17/05/2026
I'm proud to say we are releasing LAION-fMRI, a densely sampled 7T fMRI dataset of natural images, with very broad stimulus sampling for testing countless hypotheses and for deeply exploring brain representations. The dataset is now available at laion-fmri.hebartlab.com What does LAION-fMRI offer? 🧵
laion-fmri.hebartlab.com
LAION-fMRI - a 7T fMRI dataset of human vision
LAION-fMRI (LfMRI / LAION MRI dataset): 5 subjects, 25,052 launch-release natural images, 165 acquired 7T fMRI sessions with single-trial GLMsingle betas, retinotopy, localizers, and diffusion.
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 16/05/2026
Finally, today is the day: Josefine Zerbe will present and release our new multi-echo 7T fMRI dataset LAION-fMRI during #VSS2026, with >30 fMRI session per subject and unprecedented stimulus diversity. Come to Talk Room 1 (Scene perception) today at 5:15. Details will follow in a separate thread!
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Fernanda Ribeiro @felenitaribeiro.bsky.social · 14/05/2026
I’m on my way to VSS, and I’m really looking forward to showing our latest work on predicting retinotopic organization from brain anatomy at scale! Tuesday morning at the Pavilion (#477)!
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Reposted by Johannes Roth
Sander van Bree @sandervanbree.bsky.social · 14/05/2026
Are you attending #VSS2026? Come check out my talk on cross-species alignment for finding shared and distinct representational geometries in primate IT. Saturday, May 16, 2026, 3.30pm, Talk Room 1
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 14/05/2026
Can’t wait to see everyone at #VSS2026! We hope you can make it to our lab’s presentations! (see below) Come and visit us at the talks and posters, and make sure you come to our workshop about the community replication initiative re:vision. Low bar for entry! Details on the day of each presentation!
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Sander van Bree @sandervanbree.bsky.social · 04/12/2025
New preprint w/ Malin Styrnal & @martinhebart.bsky.social Have you ever computed noise ceilings to understand how well a model performs? We wrote a clarifying note on a subtle and common misapplication that can make models appear quite a lot better than they are. osf.io/preprints/ps...
osf.io
OSF
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Reposted by Johannes Roth
Fernanda Ribeiro @felenitaribeiro.bsky.social · 01/12/2025
Investigating individual-specific topographic organization has traditionally been a resource-intensive and time-consuming process. But what if we could map visual cortex organization in thousands of brains? Here we offer the community with a toolbox that can do just that! tinyurl.com/deepretinotopy
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Lenny van Dyck @levandyck.bsky.social · 11/08/2025
Really looking forward to #CCN2025! On Tuesday, I'm presenting new work with @kathadobs.bsky.social on segregated vs. integrated face & body processing in visual cortex 😊🧍🧠 Using DNNs & fMRI, we test competing hypotheses, finding both distinct & shared selectivity. Come by Poster A64 for more.
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Martin Hebart @martinhebart.bsky.social · 11/08/2025
Very much looking forward to #CCN2025! Would love to see you at our lab's talks and posters, and meet me at the panel discussion in the Algonauts session on Wednesday!
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 17/05/2025
Our lab is present at #VSS2025, so let me highlight some of the things we have been up to with a talk and three posters. Would love to see you around! 🧵
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Fernanda Ribeiro @felenitaribeiro.bsky.social · 14/05/2025
🚨 New Open Dataset Alert! 👅 We've just published a data descriptor in Scientific Data introducing the first open, annotated MRI dataset of tongue musculature, including T1- and T2-weighted images from 47 non-neurodegenerative "healthy" participants across 3 studies! 📄 Check it out: rdcu.be/el0hW
rdcu.be
An Annotated Multi-Site and Multi-Contrast Magnetic Resonance Imaging Dataset for the study of the Human Tongue Musculature
Scientific Data - An Annotated Multi-Site and Multi-Contrast Magnetic Resonance Imaging Dataset for the study of the Human Tongue Musculature
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Johannes Roth @rothj.bsky.social · 12/05/2025
I'm happy to announce that our Primer on coding in psychology / neuroscience received the CMBB Replication award! 🏆 www.nature.com/articles/s44...
nature.com
Ten principles for reliable, efficient, and adaptable coding in psychology and cognitive neuroscience - Communications Psychology
Programming is essential for modern research in neuroscience and psychology, but it can quickly become a source of frustration and error. This Primer introduces ten practical principles guiding resear...
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 15/04/2025
Proud to announce our primer on "Ten principles for reliable, efficient, and adaptable coding in psychology and cognitive neuroscience" www.nature.com/articles/s44... This primer is for beginners to get started, advanced programmers to improve, and PIs. #psychology #psychsci #cogsci #neuroskyence
nature.com
Ten principles for reliable, efficient, and adaptable coding in psychology and cognitive neuroscience - Communications Psychology
Programming is essential for modern research in neuroscience and psychology, but it can quickly become a source of frustration and error. This Primer introduces ten practical principles guiding resear...
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Reposted by Johannes Roth
Tom Wallis @tsawallis.bsky.social · 16/04/2025
Many processes from industry are not appropriate or overkill for an academic setting, but we can and should be doing better than we currently are. Our paper tries to give practical advice on how you can improve your scientific workflow, without being a coding guru. www.nature.com/articles/s44...
nature.com
Ten principles for reliable, efficient, and adaptable coding in psychology and cognitive neuroscience - Communications Psychology
Programming is essential for modern research in neuroscience and psychology, but it can quickly become a source of frustration and error. This Primer introduces ten practical principles guiding resear...
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 09/05/2025
One of the student award winners is @lucakaemmer.bsky.social who showed feedback to foveal early visual cortex during the preparation of saccades that also reflects the content of what participants see. #CAOS2025
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Martin Hebart @martinhebart.bsky.social · 19/12/2024
Do you run online studies? Different platforms have different benefits, and here I want to highlight one that may be the best of all worlds: Connect by @cloudresearch.bsky.social. Malin Styrnal in our lab wrote a tutorial on how to use it: malin-styrnal.de/connect-tuto... Some more thoughts below. 🧵
malin-styrnal.de
Connect Tutorial - Malin Styrnal
Summary
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Reposted by Johannes Roth
Martin Hebart @martinhebart.bsky.social · 11/12/2024
I promised to write about my thoughts on the status of the field of neuroAI, some of the big challenges we are facing, and the approaches we are taking to address them. This is super selective on the topic of finding a good model but in my view it affects the field as a whole. Here we go. 🧵
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