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Whole Brain Hemodynamic Response Based on Synchrony Analysis of Brain Signals for Effective Application of HD-tDCS in Stroke Patients: An fNIRS Study. | LitMetric

Whole Brain Hemodynamic Response Based on Synchrony Analysis of Brain Signals for Effective Application of HD-tDCS in Stroke Patients: An fNIRS Study.

J Pers Med

Department of Health Sciences and Technology, The Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul 06351, Korea.

Published: March 2022

AI Article Synopsis

  • This study investigated the use of high-definition transcranial direct current stimulation (HD-tDCS) on stroke patients, measuring brain activity with functional near-infrared spectroscopy (fNIRS).
  • Key findings showed that during the stimulation, brain synchronization and activity increased initially, peaked after 5 minutes, and then stabilized with strong connections in targeted areas.
  • The results suggest that HD-tDCS can effectively boost cortical activation, indicating potential for improved neurorehabilitation in patients with degenerative brain diseases.

Article Abstract

In this study, the effective application of high-definition transcranial direct current stimulation (HD-tDCS) based on the whole brain hemodynamic response in stroke patients was investigated using functional near-infrared spectroscopy (fNIRS). The intrahemispheric and interhemispheric synchronization and cortical activity based on the time during 1 mA HD-tDCS were examined in 26 chronic cerebrovascular disease patients. At the beginning of HD-tDCS, the synchronization and brain activity in the whole brain increased rapidly and decreased after 5 min. In the middle of tDCS, the synchronization began to increase again, and strong synchronic connections were formed around the desired stimulation area. After tDCS, strong cortical activation was observed in the stimulation area, indicating that the baseline of the oxyhemoglobin (HbO) signal increased in the desired stimulation area. Therefore, the results of this study indicate that HD-tDCS can be applied efficiently to enhance the effect of tDCS. This stimulation method with tDCS can be explored clinically for more neurorehabilitation of patients with degenerative brain diseases.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8949719PMC
http://dx.doi.org/10.3390/jpm12030432DOI Listing

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