Neuromodulatory feasibility of a current limiter-based tDCS device: a resting-state electroencephalography study

Lee, Yun‐Sung; Shim, Miseon; Choi, Ga-Young; Kim, Sang Ho; Lim, Wansu; Jeong, Jinwoo; Jung, Young‐Dae; Hwang, Han Jeong

doi:10.1007/s13534-023-00269-9

Cited by 3 publications

(4 citation statements)

References 39 publications

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“…However, in these studies, participants did not perform any task combined with tDCS and results revealed alpha power during the task. Therefore, we can summarize that changes in alpha frequency after tDCS are the most reported effect on resting state EEG (Lee et al, 2023). As alpha power has been found to be associated with reduced information processing and a state of relaxed/ alert wakefulness (Klimesch, 1999;Spitoni et al, 2013), one might conclude that tDCS may increase attention (Spitoni et al, 2013).…”

Section: Discussionmentioning

confidence: 78%

“…There is only limited research on the correlation between alpha power and balance control and only a few studies reported changes in alpha during training with demanding balance tasks (Chang et al, 2016;Petrofsky & Khowailed, 2014). Earlier studies (Spitoni et al,2013;Accornero et al, 2014 ;Mangia et al,2014;Lee et al, 2023) reported increased alpha power after a-tDCS. Further, findings of a study by Gordon et al (2018) reported no alterations in rs-EEG following a single session of tDCS.…”

Section: Discussionmentioning

confidence: 99%

“…Modulation of alpha activity was observed in both frontal and parietal regions with a more pronounced effect in parietal areas. Other recent studies also reported an increase of alpha power following a-tDCS when comparing pre-and post-rs-EEG in YA (for review, Lee et al, 2023). Accornero et al, (2014) showed that applying a-tDCS to the prefrontal cortex in healthy subjects induced rapid changes in the EEG mean frequency which begins to change within minutes after onset of a-tDCS.…”

Section: Introductionmentioning

confidence: 89%

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Cortical resting-state activities may predict anodal tDCS-induced facilitation of dynamic balance training

Imani,

Godde

2024

Preprint

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In this study by combining a-tDCS with DBT training and targeting two different brain regions, we aimed to find out the effective target for tDCS to facilitate learning performance and enhance balance in younger adults. Besides targeting the sensorimotor cortex (M1), we alternatively applied a-tDCS to the prefrontal cortex (left DLPFC). We further explored changes in resting-state oscillations induced by a-tDCS combined with balance training. Additionally, in this study, we investigated whether rs-EEG can predict practice effects in balance task. Forty-three healthy young adults were recruited for this study. Results revealed that a-tDCS was effective in facilitating balance performance for both experimental groups compared to sham. Further, our data confirmed retention effects for Cz and sham group to the second day of training while this retention was not confirmed for F3 group. Our data did not confirm any transfer effects of DBT to untrained static balance tasks. With respect to the EEG analysis, our data revealed an increase in relative Alpha power in the post relative to the pre-test, independent of Stimulation Group. Results further revealed an association of theta and beta power at pre-test with a practice effect. We conclude that our findings thus substantially extend previous studies by demonstrating the application of a-tDCS to facilitate changes in brain networks in targeted brain areas which are not only improving motor execution but also top-down executive control.

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 89%

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Cortical resting-state activities may predict anodal tDCS-induced facilitation of dynamic balance training

Imani,

Godde

2024

Preprint

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“…With respect to resting state EEG, we have observed increased alpha power in the postas compared to the pre-test in the Cz and sham conditions while alpha power was decreased in the F3 condition. An increase in alpha frequency after tDCS is the most reported effect in previous studies (Mangia et al, 2014;Spitoni et al, 2013;(Pfurtscheller, 2001;Lee et al, 2023). However, none of the mentioned studies combined tDCS with a task and only examined the offline effect of tDCS.…”

Section: Discussionmentioning

confidence: 98%

In older adults resting-state alpha power is associated with stronger effects of anodal tDCS over prefrontal cortex on dynamic balance

Imani,

Godde

2024

Preprint

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In the present research, we examined the effects of transcranial direct current stimulation (tDCS) on learning a dynamic balance task (DBT) in healthy older adults (OA). In a pre-and post-test randomized crossover design, eighteen healthy OA underwent DBT training while receiving tDCS either in two real stimulation conditions or a sham stimulation condition as control. We compared two target regions for anodal (a)-tDCS (primary motor cortex, M1/Cz, and dorsolateral prefrontal cortex, DLPFC/F3) and hypothesized that not only targeting M1 would be effective as previously shown for young adults but that, due to age-related deficiencies in cognitive control, enhancing cognitive resources through a-tDCS over left DLPFC would also facilitate dynamic balance training (DBT) in OA. Additionally, we explored changes in resting-state EEG oscillations and investigated whether practice effects could be predicted with resting-state EEG at baseline. Our results revealed that in the F3 condition, OA performed better than in the other two stimulation conditions (Cz, sham). Further, our results confirmed a negative transfer effect on untrained static balance tasks. Lower alpha power at baseline significantly predicted a stronger practice effect in the F3 condition. We conclude that the effects of tDCS on balance training and balance performance in OA depend on mental states at baseline as indicated by resting-state brain oscillations.

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Effects of tDCS on emotion recognition and brain oscillations

Şahintürk,

Yıldırım

2024

Journal of Clinical and Experimental Neuropsychology

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Neuromodulatory feasibility of a current limiter-based tDCS device: a resting-state electroencephalography study

Cited by 3 publications

References 39 publications

Cortical resting-state activities may predict anodal tDCS-induced facilitation of dynamic balance training

Cortical resting-state activities may predict anodal tDCS-induced facilitation of dynamic balance training

In older adults resting-state alpha power is associated with stronger effects of anodal tDCS over prefrontal cortex on dynamic balance

Effects of tDCS on emotion recognition and brain oscillations

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