Transcranial direct current stimulation of prefrontal cortex: An auditory event-related potential and proton magnetic resonance spectroscopy study

Knechtel, Lilly; Schall, Ulrich; Cooper, Gavin; Ramadan, Saadallah; Stanwell, Peter; Jolly, Todd; Thienel, Renate

doi:10.1016/j.npbr.2014.06.001

Cited by 14 publications

(10 citation statements)

References 40 publications

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“…Other exclusion criteria were more diverse. Clinical samples of the included studies were on a stable dose (Hoy et al 2014;Kang et al 2012;Knechtel et al 2014a;Powell et al 2014;Vercammen et al 2011;Wolkenstein and Plewnia 2013) or did not take psychiatric medication (Boggio et al 2006;Gorini and Lucchiari 2014). Psychiatric interviews and/or questionnaires were used to screen patients.…”

Section: Resultsmentioning

confidence: 99%

“…Particularly, little is known regarding the influence of the time between the administration of an active and a sham stimulation in within-subject, single-session, sham-controlled tDCS studies. Often, the time of the Interval Between Sessions (IBS) is chosen empirically, with lengths varying between less than one hour (Fertonani et al 2010;Fregni et al 2005;Gladwin et al 2012b;Knechtel et al 2014a;Knechtel et al 2014b), to up to two weeks (Ohn et al 2008). Although studies on motor cortical excitability showed that the after-effects of tDCS may last several hours (Nitsche et al 2008), no such systematic exploration for cognitive measures has been conducted yet.…”

Section: Introductionmentioning

confidence: 99%

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The effect of the interval-between-sessions on prefrontal transcranial direct current stimulation (tDCS) on cognitive outcomes: a systematic review and meta-analysis

et al. 2016

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Recently, there has been wide interest in the effects of transcranial direct current stimulation (tDCS) of the dorsolateral prefrontal cortex (DLPFC) on cognitive functioning. However, many methodological questions remain unanswered. One of them is whether the time interval between active and sham-controlled stimulation sessions, i.e. the Interval Between Sessions (IBS), influences DLPFC tDCS effects on cognitive functioning.Therefore, a systematic review and meta-analysis was performed of experimental studies published in PubMed, Science Direct, and other databases from the first data available to February 2016. Single session shamcontrolled within-subject studies reporting the effects of tDCS of the DLPFC on cognitive functioning in healthy controls and neuropsychiatric patients were included. Cognitive tasks were categorized in tasks assessing memory, attention, and executive functioning. Evaluation of 188 trials showed that anodal vs. sham tDCS significantly decreased response times and increased accuracy, and specifically for the executive functioning tasks, in a sample of healthy participants and neuropsychiatric patients (although a slightly different pattern of improvement was found in analyses for both samples separately). The effects of cathodal vs. sham tDCS (45 trials), on the other hand, were not significant. IBS ranged from less than one hour to up to one week (i.e. cathodal tDCS) or two weeks (i.e. anodal tDCS). This IBS length had no influence on the estimated effect size when performing a meta-regression of IBS on reaction time and accuracy outcomes in all three cognitive categories, both for anodal and cathodal stimulation. Practical recommendations and limitations of the study are further discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of the interval-between-sessions on prefrontal transcranial direct current stimulation (tDCS) on cognitive outcomes: a systematic review and meta-analysis

et al. 2016

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“…The 5 studies examining patients with schizophrenia applied anodal tDCS to modulate frontal cortical functions, although tDCS protocols used in each study showed slight variations. Of these, two studies examined tDCS effects on early and late auditory processing and reported inconsistent results [ 17 , 18 ]. Alterations in the N1 and mismatch negativity (MMN), which reflect pre-attentive auditory processing, and in P3b or P300, which represents working memory update of change and attention, have all been reported in patients with schizophrenia [ 19 - 21 ].…”

Section: Resultsmentioning

confidence: 99%

Modulation of Electrophysiology by Transcranial Direct Current Stimulation in Psychiatric Disorders: A Systematic Review

Kim

Kwak

Lee

et al. 2018

Psychiatry Investig

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Objective Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique increasingly used to relieve symptoms of psychiatric disorders. Electrophysiologic markers, such as electroencephalography (EEG) and event-related potentials (ERP), have high temporal resolution sensitive to detect plastic changes of the brain associated with symptomatic improvement following tDCS application. Methods We performed systematic review to identify electrophysiological markers that reflect tDCS effects on plastic brain changes in psychiatric disorders. A total of 638 studies were identified by searching PubMed, Embase, psychINFPO. Of these, 21 full-text articles were assessed eligible and included in the review. Results Although the reviewed studies were heterogeneous in their choices of tDCS protocols, targeted electrophysiological markers, and disease entities, their results strongly support EEG/ERPs to sensitively reflect plastic brain changes and the associated symptomatic improvement following tDCS. Conclusion EEG/ERPs may serve a potent tool in revealing the mechanisms underlying psychiatric symptoms, as well as in localizing the brain area targeted for stimulation. Future studies in each disease entities employing consistent tDCS protocols and electrophysiological markers would be necessary in order to substantiate and further elaborate the findings of studies included in the present systematic review.

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“…Following the decreased activation of the central nervous system, it leads to abnormalities in the performance of movements [2]. Transcranial direct current stimulation (tDCS) is one of the simplest ways of achieving noninvasive brain stimulation [3].…”

Section: Introductionmentioning

confidence: 99%

Effects of tDCS on Muscle Stiffness in Children with Cerebral Palsy Measured by Myotonometry: A Preliminary Study

Smoter¹,

Jędrzejczyk-Góral²,

Chen

et al. 2020

Applied Sciences

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Background: The aim of this study was to investigate the influence of transcranial direct current stimulation (tDCS) on the biceps brachii and flexor carpi radialis stiffness in children with cerebral palsy (CP). The authors also aimed to verify the relationship between spasticity and muscle stiffness. Methods: Twelve children with CP (mean ± SD; age, 8 ± 1.3 years; height, 118.7 ± 4.1 cm; weight, 23.0 ± 2.2 kg) were involved in the study. Muscle stiffness was estimated using a MyotonPRO device in a MultiScan pattern of five measurements. Simultaneously, the tDCS stimulation was performed. Spasticity was assessed by a neurologist using the Ashworth Scale. Results: Stiffness of the flexor carpi radialis muscle decreased significantly after tDCS therapy (p = 0.04). There was no significant change in stiffness of the biceps brachii. For all participants, the Spearman rank correlation showed statistically significant and positive relationships between muscle stiffness and the Ashworth Scale (p = 0.04). Conclusions: Transcranial direct current stimulation has a decreasing effect on stiffness and spasticity of the flexor carpi radialis in children with CP. The MyotonPRO device provides objective data and correlates with spasticity measurements.

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Transcranial direct current stimulation of prefrontal cortex: An auditory event-related potential and proton magnetic resonance spectroscopy study

Cited by 14 publications

References 40 publications

The effect of the interval-between-sessions on prefrontal transcranial direct current stimulation (tDCS) on cognitive outcomes: a systematic review and meta-analysis

The effect of the interval-between-sessions on prefrontal transcranial direct current stimulation (tDCS) on cognitive outcomes: a systematic review and meta-analysis

Modulation of Electrophysiology by Transcranial Direct Current Stimulation in Psychiatric Disorders: A Systematic Review

Effects of tDCS on Muscle Stiffness in Children with Cerebral Palsy Measured by Myotonometry: A Preliminary Study

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