Sign in

Raj Magesh

@raj-magesh.org
74 followers 158 following 33 posts

Cognitive computational neuroscience | Postdoc at Pitt advised by Marlene Behrmann | Currently working on a few fun sEEG projects :D raj-magesh.org

PostsRepliesMedia
Reposted by Raj Magesh
Thomas Yeo @bttyeo.bsky.social · 22/05/2026
Here'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 Magesh
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.
312857
Reposted by Raj Magesh
Sepiedeh Keshavarzi @sepikeshavarzi.bsky.social · 07/04/2026
When 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 Magesh
Minas Karamanis @minaskar.bsky.social · 30/03/2026
Hey, I wrote a thing about AI in astrophysics ergosphere.blog/posts/the-ma...
ergosphere.blog
The 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 Magesh
Roselyne Chauvin @roselynechauvin.bsky.social · 13/03/2026
The 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.com
how does his brain do it ? #neuroscience #memory #sport Nelson Dellis 6x US memory champion
YouTube video by Roselyne Chauvin
58432
Reposted by Raj Magesh
Manasi Malik @manasimalik.bsky.social · 26/02/2026
Excited 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 Magesh
Tomás Ryan @tjryan.bsky.social · 12/02/2026
Do 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 Magesh
Kelsey Han @chihyehan.bsky.social · 30/01/2026
Human 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.com
High-dimensional structure underlying individual differences in naturalistic visual experience
Han 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 Magesh
Mick Bonner @mickbonner.bsky.social · 15/12/2025
Prediction: 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 Magesh
UniReps @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 Magesh
Mick Bonner @mickbonner.bsky.social · 12/12/2025
Hopkins Cog Sci is hiring! We have two open faculty positions: one in vision, and one language. Please repost!
03134
Reposted by Raj Magesh
Mick Bonner @mickbonner.bsky.social · 11/12/2025
Dimensionality 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