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September 17, 2025Open Access

Transcranial Direct Current Stimulation Modulates Resting Brain Hemodynamics and Autonomic Function: A Multimodal fNIRS-HRV Study

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Authors

SCSeoyoung ChoiSHSung-Min HaWPWeston Park

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Overview

Sham-controlled multimodal analysis examines brain hemodynamics and heart rate variability reveals enhanced regulation.

Key Points

  • Active tDCS significantly decreased oxyhemoglobin concentration in the left DLPFC, indicating reduced cortical oxygenation.
  • Functional connectivity analysis revealed that tDCS modulated both intra- and inter-frontal connections compared to the sham.
  • tDCS led to increased heart rate variability indices, reflecting enhanced autonomic regulation and parasympathetic activity.
  • Participants reported significant reductions in anger and improved mood after tDCS, while the sham group showed minimal changes.

Cite This Study

Choi et al. (2025) studied this question.

synapsesocial.com/papers/68d45e6a31b076d99fa5f0b2https://doi.org/10.1101/2025.09.07.673917
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Simultaneous tDCS-fMRI reveals limited and inconsistent changes in functional connectivity: Insights from a temporal dynamics study2026
  2. 2Does tDCS Selectively Modulate the Pre-frontal Cortex Hemodynamics? An Immediate Effect-Controlled Trial on Depressed and Healthy People2024
  3. 3Does the Transcranial Direct Current Stimulation Selectively Modulate Prefrontal Cortex Hemodynamics? An Immediate Effect-Controlled Trial on People with and without Depression2024 · 5 citations
  4. 4Dose-dependent response of prefrontal transcranial direct current stimulation on heart rate variability: an electric field modeling study2023 · 2 citations
  5. 5Effects of prefrontal transcranial direct current stimulation on autonomic and neuroendocrine responses to psychosocial stress in healthy humans2019 · 77 citations