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Related Experiment Video

Updated: Feb 13, 2026

Simultaneous Two-photon In Vivo Imaging of Synaptic Inputs and Postsynaptic Targets in the Mouse Retrosplenial Cortex
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Structural and functional brain network of human retrosplenial cortex.

Panlong Li1, Han Shan2, Shengxiang Liang1

  • 1Department of Physics, Zhengzhou University, Zhengzhou, Henan, 450001, China; Beijing Engineering Research Center of Radiographic Techniques and Equipment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.

Neuroscience Letters
|March 14, 2018
PubMed
Summary

This study reveals distinct roles for retrosplenial cortex (RSC) sub-regions. Brodmann area 29 processes auditory information, while Brodmann area 30 handles visual scene processing, using diffusion tensor imaging and fMRI.

Keywords:
Cognitive functionDTI tractographyFunctional MRIRetrosplenial cortex

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuroimaging

Background:

  • The retrosplenial cortex (RSC) is crucial for cognitive functions.
  • Previous RSC connectivity studies relied on animal models and tracer methods.
  • Understanding RSC sub-region connectivity is essential for cognitive neuroscience.

Purpose of the Study:

  • To investigate the structural and functional connectivity of RSC sub-regions, specifically Brodmann area (BA)29 and BA30.
  • To construct fiber connectivity networks using diffusion tensor imaging (DTI).
  • To construct functional connectivity networks using resting-state functional MRI (fMRI).

Main Methods:

  • Diffusion tensor imaging (DTI) tractography was used to build structural networks.
  • Resting-state functional magnetic resonance imaging (fMRI) was employed for functional networks.
  • Analysis focused on Brodmann area 29 and Brodmann area 30 within the RSC.

Main Results:

  • The BA29 network demonstrated fiber connections with the auditory cortex and functional connections with BA21.
  • The BA30 network exhibited both fiber and functional connections with the visual cortex.
  • BA30 also showed fiber connections with the hippocampus, thalamus, and prefrontal cortex.

Conclusions:

  • Structural and functional connectivity show a degree of correlation.
  • BA29 primarily processes auditory information from the auditory cortex.
  • BA30 is predominantly involved in processing visual scene information from the visual cortex.