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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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Related Experiment Video

Updated: Dec 17, 2025

Localizing Function-specific Targets for Transcranial Magnetic Stimulation in the Absence of Navigation Equipment
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Individual differences in local functional brain connectivity affect TMS effects on behavior.

Carsten Gießing1, Mohsen Alavash2,3, Christoph S Herrmann4,5

  • 1Biological Psychology Lab, Department of Psychology, School of Medicine and Health Sciences, Research Center Neurosensory Science and Systems, Carl von Ossietzky University Oldenburg, 26111, Oldenburg, Germany. carsten.giessing@uni-oldenburg.de.

Scientific Reports
|June 28, 2020
PubMed
Summary
This summary is machine-generated.

Individual brain network connectivity influences how transcranial magnetic stimulation (TMS) affects behavior. Specific brain region connectivity patterns predict TMS-induced changes in visuospatial task performance, highlighting the importance of brain state for effective stimulation.

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Brain Stimulation

Background:

  • Individual differences in transcranial magnetic stimulation (TMS) behavioral effects are significant.
  • Brain states and network connectivity may underlie these inter-individual variations.
  • Understanding these factors is crucial for optimizing TMS efficacy.

Purpose of the Study:

  • Identify brain regions whose pre- and post-perturbation connectivity influences individual behavioral responses to right parietal TMS.
  • Investigate the relationship between brain functional connectivity and behavioral outcomes in a visuospatial target detection task.
  • Determine the role of brain network states in modulating TMS effects.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) measured brain activity in 20 subjects during resting state and a visuospatial task.
  • 1 Hz repetitive TMS (rTMS) and sham stimulation were applied over the right parietal cortex.
  • Elastic net analysis combined with voxel-wise functional connectivity analysis identified key brain regions.

Main Results:

  • TMS-induced changes in task accuracy significantly correlated with functional connectivity patterns post-stimulation.
  • Connectivity of the left superior temporal, angular, and precentral gyri emerged as key predictors of individual TMS effects.
  • The ability of the brain to achieve a specific state influenced TMS-induced behavioral improvements.

Conclusions:

  • The brain's functional network state is critical for effective right parietal TMS in visuospatial tasks.
  • Individual differences in achieving this optimal brain state explain variable TMS behavioral outcomes.
  • Targeting specific network connectivity patterns may enhance personalized TMS interventions.