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Updated: Jun 6, 2026

Multiscale Investigations of Cortical Processing by Integrating Laminar Polytrodes and Optogenetics with Micro Electrocorticography in Rodents
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Intrinsic space-time couplings governing multi-scale cortical dynamics.

Alexander D White1, Yu Wang1,2, John Kochalka1,3

  • 1Department of Bioengineering, Stanford University, Stanford CA 94305, USA.

Biorxiv : the Preprint Server for Biology
|June 5, 2026
PubMed
Summary

Researchers developed conformal immersion microscopy to track brain activity across the entire neocortex. This new method reveals fundamental dynamical elements governing brain organization, aiding neuromodulation research.

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Area of Science:

  • Neuroscience
  • Biophysics
  • Systems Neuroscience

Background:

  • The neocortex is a key target for neuromodulation, but its global operational principles remain elusive.
  • Existing technologies struggle to simultaneously capture cortex-wide activity and millisecond neuronal firing resolution.

Purpose of the Study:

  • To introduce and apply a novel microscopy technique for high-resolution, large-scale brain activity tracking.
  • To identify fundamental principles governing neocortical dynamics and organization.

Main Methods:

  • Conformal immersion microscopy enabling cortex-wide activity tracking with millisecond temporal and 100 μm spatial resolution.
  • Multiscale analysis applying physics-based frameworks to neural activity data.
  • Perturbation studies using pharmacological, optogenetic, and genetic interventions.

Main Results:

  • Identified a fundamental frequency-dependent coherence length partitioning the neocortex into discrete dynamical elements.
  • Demonstrated conserved dynamics across sub-threshold and suprathreshold neural activity regimes.
  • Showed robustness of these dynamical elements to various interventions, with conditions for overriding boundaries.

Conclusions:

  • Conformal immersion microscopy provides unprecedented spatiotemporal resolution for neocortical dynamics.
  • Fundamental dynamical elements and their scale-invariant properties govern neocortical organization.
  • Findings offer a foundation for mechanistically informed basic and translational neuromodulation research.