Reposted by Raj MageshThomas Yeo @bttyeo.bsky.social · 22/05/2026Here's bonus slides on cross-validation tests, separate from our preprint. Covering: 1. paired (sign-flip) permutation test 2. label-swap permutation test 3. sample-level vs fold-averaged stats 4. a common misapplication of the corrected t-test 5. three bootstrap variants 1/N 13015
Reposted by Raj MageshMartin Hebart @martinhebart.bsky.social · 17/05/2026I'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.comLAION-fMRI - a 7T fMRI dataset of human visionLAION-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. 312857
Reposted by Raj MageshSepiedeh Keshavarzi @sepikeshavarzi.bsky.social · 07/04/2026When universities and research institutions become military targets, academics cannot remain silent. I co-initiated an open letter calling for global academic solidarity and support for affected students and scholars. Please share. to read and sign: sites.google.com/view/protect... 03317
Reposted by Raj MageshMinas Karamanis @minaskar.bsky.social · 30/03/2026Hey, I wrote a thing about AI in astrophysics ergosphere.blog/posts/the-ma...ergosphere.blogThe machines are fine. I'm worried about us.On AI agents, grunt work, and the part of science that isn't replaceable. 1101781531
Reposted by Raj MageshRoselyne Chauvin @roselynechauvin.bsky.social · 13/03/2026The 6x US memory champion – Nelson Dellis – can memorize a deck of cards in 40 seconds and knows the first 10K digits of pi. To figure out how, he let us peak inside his brain. Here is what we learned in our precision brain mapping study www.biorxiv.org/content/10.6... youtube.com/shorts/MryMq...youtube.comhow does his brain do it ? #neuroscience #memory #sport Nelson Dellis 6x US memory championYouTube video by Roselyne Chauvin 58432
Reposted by Raj MageshManasi Malik @manasimalik.bsky.social · 26/02/2026Excited to share new work on how the brain makes social inferences from visual input! 🧠👯♂️ (With @lisik.bsky.social , @shariliu.bsky.social, @tianminshu.bsky.social , and Minjae Kim!) www.biorxiv.org/content/10.6... 15217
Reposted by Raj MageshTomás Ryan @tjryan.bsky.social · 12/02/2026Do you work or study in the fields of psychology, neuroscience, computer science, artificial intelligence, or philosophy? What does the term 'representation' mean to you? We invite you to participate in a brief survey on key conceptual questions across fields. eu.surveymonkey.com/r/VX9GNXM 46660
Reposted by Raj MageshKelsey Han @chihyehan.bsky.social · 30/01/2026Human visual cortex representations may be much higher-dimensional than earlier work suggested, but are these higher dimensions of cortical activity actually relevant to behavior? Our new paper tackles this by studying how different people experience the same movies. 🧵 www.cell.com/current-biol...cell.comHigh-dimensional structure underlying individual differences in naturalistic visual experienceHan and Bonner reveal that individual visual experience arises from high-dimensional neural geometry distributed across multiple representational scales. By characterizing the full dimensional spectru... 26016
Reposted by Raj MageshMick Bonner @mickbonner.bsky.social · 15/12/2025Prediction: task-based optimization will ultimately prove to have a relatively minor role in DNN models of the ventral stream. Although tasks (including self-supervised ones) are currently crucial, there are signs that a simpler approach is possible. A thread: 1209
Reposted by Raj MageshUniReps @unireps.bsky.social · 12/12/2025📢The UniReps x @ellis.eu speaker series is back! Come join us in our next appointment 18th December 4 pm CET with @meenakshikhosla.bsky.social and Raj Magesh Gauthaman🔵🔴 0126
Reposted by Raj MageshMick Bonner @mickbonner.bsky.social · 12/12/2025Hopkins Cog Sci is hiring! We have two open faculty positions: one in vision, and one language. Please repost! 03134
Reposted by Raj MageshMick Bonner @mickbonner.bsky.social · 11/12/2025Dimensionality reduction may be the wrong approach to understanding neural representations. Our new paper shows that across human visual cortex, dimensionality is unbounded and scales with dataset size—we show this across nearly four orders of magnitude. journals.plos.org/ploscompbiol... 722165