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The Platonic brain bridge hypothesis: human brain networks as an architectural prior for omni models

arxiv.org/abs/2609.10947

quality89

Updated 3 h ago · first seen 11 Sept 2026

paper_01M294FQCD9B638C1SA6SPDTAZ

Published
11 Sept 2026
T1 · 3 h ago
arXiv
2609.10947
T1 · 3 h ago
Category
q-bio.NC
T1 · 3 h ago

Abstract

We propose the Platonic brain bridge hypothesis: omni models, which process video, audio and text jointly like the brain, converge on brain-like representations, and the correspondence is bidirectional. From model to brain, brain-likeness of seven omni models is stable across participants, and our encoding models on their internal hidden states rank first on the Algonauts 2025 out-of-distribution leaderboard. From brain to model, three contributions follow. Brain-MoE gives seven cortical networks one brain-pretrained expert each and raises held-out accuracy in all 15 model-benchmark pairs by 6.42 percentage points on average. Brain-AVQA builds questions from video clips labelled by the most responsive brain network; the real network-to-expert map exceeds shuffled maps in-domain on all three models. Brain-Scope uses sparse autoencoders to localize the correspondence to a small subset whose removal weakens brain prediction in all three bases tested. Human brain networks are therefore a usable architectural prior for omni models.

Authors 4

Pengfei Zhang, Biao Tian, Xiangang Li, Li Liu

Specification

Official page

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

Arxiv announce type
cross

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

arXiv id
2609.10947

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

Categories
q-bio.NC, cs.LG

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

PDF

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

Primary category
q-bio.NC

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

Published
11 Sept 2026

Source:arXiv (Atom API + RSS)T1observed 3 h agohigh

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Provenance

Attributed facts

9

Source tiers

T19

Freshest observation

3 h ago

Conflicts

None