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Updated: Jan 10, 2026

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A mouse brain atlas based on dendritic microenvironments.

Yufeng Liu1, Sujun Zhao2, Zhixi Yun2

  • 1New Cornerstone Science Laboratory, Institute for Brain and Intelligence, Fudan University, Shanghai, China.

Nature Neuroscience
|November 25, 2025
PubMed
Summary
This summary is machine-generated.

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Mapping neuron dendrites reveals finer brain organization. This new microenvironment atlas nearly doubles identifiable mouse brain areas and links local structure to global connectivity, offering new functional insights.

Area of Science:

  • Neuroscience
  • Computational Biology
  • Neuroanatomy

Background:

  • Current mouse brain atlases primarily use cell density, neglecting dendritic structures crucial for local neural networks.
  • Understanding the spatial organization of neural tissue is essential for mapping brain function.

Purpose of the Study:

  • To develop a finer-grained brain organization map by analyzing neuronal dendritic patterns within local neighborhoods (microenvironments).
  • To investigate the relationship between local dendritic structure and long-range neuronal connectivity.

Main Methods:

  • Analysis of dendritic patterns from over 100,000 neurons across 111 mouse brains.
  • Development of a "microenvironment" concept to define brain organization based on dendrite arrangements.
  • Comparison of the new atlas with the standard Allen Common Coordinate Framework.

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Related Experiment Videos

Last Updated: Jan 10, 2026

Analyzing Dendritic Morphology in Columns and Layers
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Large-scale Three-dimensional Imaging of Cellular Organization in the Mouse Neocortex
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Published on: September 5, 2018

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Main Results:

  • Discovery of distinct neuronal microenvironments that subdivide known brain regions.
  • Identification of nearly double the number of identifiable brain areas compared to existing atlases.
  • Correlation found between similar local dendrite arrangements and similar long-range target connections, particularly in the hippocampus.

Conclusions:

  • Mapping neuronal microenvironments provides a more detailed brain organization map than cell density alone.
  • Local dendritic structure is a strong predictor of global neuronal connectivity.
  • This microenvironment atlas reveals hidden subdivisions and correlations, offering new insights into brain structure-function relationships.