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Related Concept Videos

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Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
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Related Experiment Video

Updated: Jul 11, 2025

Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy
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Structural-functional coupling abnormalities in temporal lobe epilepsy.

Xiaoting Huang1, Yangsa Du1, Danni Guo1

  • 1Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.

Frontiers in Neuroscience
|November 6, 2023
PubMed
Summary
This summary is machine-generated.

Structural connectivity (SC) and functional connectivity (FC) coupling is altered in temporal lobe epilepsy (TLE). Brain regions with high SC-FC coupling in healthy controls showed reduced coupling in TLE patients, indicating vulnerability to pathological disruption.

Keywords:
functional connectivityhuman brainstructural connectivitystructural–functional couplingtemporal lobe epilepsy

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Area of Science:

  • Neuroscience
  • Medical Imaging
  • Systems Biology

Background:

  • Multimodal neuroimaging techniques are crucial for understanding brain connectomes.
  • Elucidating the relationship between brain function and structure is an ongoing research focus.
  • Temporal lobe epilepsy (TLE) presents complex challenges in understanding brain network alterations.

Purpose of the Study:

  • To evaluate structural connectivity (SC) and functional connectivity (FC) coupling in healthy controls (HCs).
  • To investigate modifications in SC-FC coupling in individuals with TLE.
  • To identify specific brain regions or networks affected by altered SC-FC coupling in TLE.

Main Methods:

  • Evaluated 65 TLE patients and 48 HCs.
  • Determined SC-FC coupling and clustered whole-brain nodes.
  • Compared SC-FC coupling differences among clusters and groups using statistical analysis.

Main Results:

  • Nodes were divided into five clusters, with distinct regional distributions (e.g., limbic, visual networks).
  • Significant discrepancies in SC-FC coupling were found in Clusters 3, 4, and 5 between TLE patients and HCs.
  • TLE patients exhibited significantly lower SC-FC coupling strengths in these clusters compared to HCs.

Conclusions:

  • SC and FC coupling exhibit spatial heterogeneity across the brain.
  • Regions with high SC-FC coupling in HCs are more susceptible to pathological disruption in TLE.
  • Altered SC-FC coupling is a key feature of TLE, particularly in specific network clusters.