Status note · 24 August 2026
Distance carries most of the cortex; the wiring earns its keep in association regions
- Observation
- Using intracranial EEG to build a coordinate system of human cortical dynamics, the authors find that dynamic similarity between regions is largely explained by inter-regional distance. Microstructural similarity and connectome information add explanatory power specifically in transmodal association cortex. The weighting of local versus macroscale constraints varies systematically along the unimodal-to-transmodal axis, and the pattern reproduces across atlases and within individuals.
- Validity band
- Peer-reviewed, intracranial, with cross-atlas and within-subject replication — strong for human electrophysiology. Still correlational: variance explained across regions, not a manipulation. 'Geometry' here means distance on the cortical sheet, not intrinsic curvature, so it licenses no gravitational or Riemannian reading.
- Falsifier
- An independent cohort in which inter-regional distance loses its advantage over connectivity and microstructure across unimodal cortex, or in which the graded unimodal-to-transmodal shift in constraint weighting fails to reproduce — either would mark the geometric term as a parcellation artifact.
- Destination tags
- gaia-to-geometryevolving-receiverbrain-universe