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Veldema J, Steingräber T, von Grönheim L, Wienecke J, Regel R, Schack T, Schütz C. Direct Current Stimulation over the Primary Motor Cortex, Cerebellum, and Spinal Cord to Modulate Balance Performance: A Randomized Placebo-Controlled Trial. Bioengineering (Basel) 2024; 11:353. [PMID: 38671775 PMCID: PMC11048454 DOI: 10.3390/bioengineering11040353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024] Open
Abstract
OBJECTIVES Existing applications of non-invasive brain stimulation in the modulation of balance ability are focused on the primary motor cortex (M1). It is conceivable that other brain and spinal cord areas may be comparable or more promising targets in this regard. This study compares transcranial direct current stimulation (tDCS) over (i) the M1, (ii) the cerebellum, and (iii) trans-spinal direct current stimulation (tsDCS) in the modulation of balance ability. METHODS Forty-two sports students were randomized in this placebo-controlled study. Twenty minutes of anodal 1.5 mA t/tsDCS over (i) the M1, (ii) the cerebellum, and (iii) the spinal cord, as well as (iv) sham tDCS were applied to each subject. The Y Balance Test, Single Leg Landing Test, and Single Leg Squat Test were performed prior to and after each intervention. RESULTS The Y Balance Test showed significant improvement after real stimulation of each region compared to sham stimulation. While tsDCS supported the balance ability of both legs, M1 and cerebellar tDCS supported right leg stand only. No significant differences were found in the Single Leg Landing Test and the Single Leg Squat Test. CONCLUSIONS Our data encourage the application of DCS over the cerebellum and spinal cord (in addition to the M1 region) in supporting balance control. Future research should investigate and compare the effects of different stimulation protocols (anodal or cathodal direct current stimulation (DCS), alternating current stimulation (ACS), high-definition DCS/ACS, closed-loop ACS) over these regions in healthy people and examine the potential of these approaches in the neurorehabilitation.
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Affiliation(s)
- Jitka Veldema
- Faculty of Psychology and Sports Science, Bielefeld University, 33615 Bielefeld, Germany; (T.S.); (L.v.G.); (R.R.); (T.S.); (C.S.)
| | - Teni Steingräber
- Faculty of Psychology and Sports Science, Bielefeld University, 33615 Bielefeld, Germany; (T.S.); (L.v.G.); (R.R.); (T.S.); (C.S.)
| | - Leon von Grönheim
- Faculty of Psychology and Sports Science, Bielefeld University, 33615 Bielefeld, Germany; (T.S.); (L.v.G.); (R.R.); (T.S.); (C.S.)
| | - Jana Wienecke
- Department of Exercise and Health, Paderborn University, 33098 Paderborn, Germany;
| | - Rieke Regel
- Faculty of Psychology and Sports Science, Bielefeld University, 33615 Bielefeld, Germany; (T.S.); (L.v.G.); (R.R.); (T.S.); (C.S.)
| | - Thomas Schack
- Faculty of Psychology and Sports Science, Bielefeld University, 33615 Bielefeld, Germany; (T.S.); (L.v.G.); (R.R.); (T.S.); (C.S.)
| | - Christoph Schütz
- Faculty of Psychology and Sports Science, Bielefeld University, 33615 Bielefeld, Germany; (T.S.); (L.v.G.); (R.R.); (T.S.); (C.S.)
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Faralli A, Fucà E, Lazzaro G, Menghini D, Vicari S, Costanzo F. Transcranial Direct Current Stimulation in neurogenetic syndromes: new treatment perspectives for Down syndrome? Front Cell Neurosci 2024; 18:1328963. [PMID: 38456063 PMCID: PMC10917937 DOI: 10.3389/fncel.2024.1328963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/25/2024] [Indexed: 03/09/2024] Open
Abstract
This perspective review aims to explore the potential neurobiological mechanisms involved in the application of transcranial Direct Current Stimulation (tDCS) for Down syndrome (DS), the leading cause of genetically-based intellectual disability. The neural mechanisms underlying tDCS interventions in genetic disorders, typically characterized by cognitive deficits, are grounded in the concept of brain plasticity. We initially present the neurobiological and functional effects elicited by tDCS applications in enhancing neuroplasticity and in regulating the excitatory/inhibitory balance, both associated with cognitive improvement in the general population. The review begins with evidence on tDCS applications in five neurogenetic disorders, including Rett, Prader-Willi, Phelan-McDermid, and Neurofibromatosis 1 syndromes, as well as DS. Available evidence supports tDCS as a potential intervention tool and underscores the importance of advancing neurobiological research into the mechanisms of tDCS action in these conditions. We then discuss the potential of tDCS as a promising non-invasive strategy to mitigate deficits in plasticity and promote fine-tuning of the excitatory/inhibitory balance in DS, exploring implications for cognitive treatment perspectives in this population.
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Affiliation(s)
- Alessio Faralli
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Elisa Fucà
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Giulia Lazzaro
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Deny Menghini
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
- Life Sciences and Public Health Department, Catholic University of Sacred Heart, Rome, Italy
| | - Floriana Costanzo
- Child and Adolescent Neuropsychiatry Unit, Bambino Gesù Children's Hospital (IRCCS), Rome, Italy
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Calderone A, Cardile D, Gangemi A, De Luca R, Quartarone A, Corallo F, Calabrò RS. Traumatic Brain Injury and Neuromodulation Techniques in Rehabilitation: A Scoping Review. Biomedicines 2024; 12:438. [PMID: 38398040 PMCID: PMC10886871 DOI: 10.3390/biomedicines12020438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Traumatic Brain Injury (TBI) is a condition in which an external force, usually a violent blow to the head, causes functional impairment in the brain. Neuromodulation techniques are thought to restore altered function in the brain, resulting in improved function and reduced symptoms. Brain stimulation can alter the firing of neurons, boost synaptic strength, alter neurotransmitters and excitotoxicity, and modify the connections in their neural networks. All these are potential effects on brain activity. Accordingly, this is a promising therapy for TBI. These techniques are flexible because they can target different brain areas and vary in frequency and amplitude. This review aims to investigate the recent literature about neuromodulation techniques used in the rehabilitation of TBI patients. MATERIALS AND METHODS The identification of studies was made possible by conducting online searches on PubMed, Web of Science, Cochrane, Embase, and Scopus databases. Studies published between 2013 and 2023 were selected. This review has been registered on OSF (JEP3S). RESULTS We have found that neuromodulation techniques can improve the rehabilitation process for TBI patients in several ways. Transcranial Magnetic Stimulation (TMS) can improve cognitive functions such as recall ability, neural substrates, and overall improved performance on neuropsychological tests. Repetitive TMS has the potential to increase neural connections in many TBI patients but not in all patients, such as those with chronic diffuse axonal damage. CONCLUSIONS This review has demonstrated that neuromodulation techniques are promising instruments in the rehabilitation field, including those affected by TBI. The efficacy of neuromodulation can have a significant impact on their lives and improve functional outcomes for TBI patients.
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Affiliation(s)
| | - Davide Cardile
- IRCCS Centro Neurolesi Bonino-Pulejo, S.S. 113 Via Palermo, C. da Casazza; 98124 Messina, Italy; (A.C.); (A.G.); (R.D.L.); (A.Q.); (F.C.); (R.S.C.)
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Khalil R, Agnoli S, Mastria S, Kondinska A, Karim AA, Godde B. Individual differences and creative ideation: neuromodulatory signatures of mindset and response inhibition. Front Neurosci 2023; 17:1238165. [PMID: 38125402 PMCID: PMC10731982 DOI: 10.3389/fnins.2023.1238165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 11/10/2023] [Indexed: 12/23/2023] Open
Abstract
This study addresses the modulatory role of individual mindset in explaining the relationship between response inhibition (RI) and divergent thinking (DT) using transcranial direct current stimulation (tDCS). Forty undergraduate students (22 male and 18 female), aged between 18 and 23 years (average age = 19 years, SD = 1.48), were recruited. Participants received either anodal tDCS of the right IFG coupled with cathodal tDCS of the left IFG (R + L-; N = 19) or the opposite coupling (R-L+; N = 21). We tested DT performance using the alternative uses task (AUT), measuring participants' fluency, originality, and flexibility in the response production, as well as participants' mindsets. Furthermore, we applied a go-no-go task to examine the role of RI before and after stimulating the inferior frontal gyrus (IFG) using tDCS. The results showed that the mindset levels acted as moderators on stimulation conditions and enhanced RI on AUT fluency and flexibility but not originality. Intriguingly, growth mindsets have opposite moderating effects on the change in DT, resulting from the tDCS stimulation of the left and the right IFG, with reduced fluency but enhanced flexibility. Our findings imply that understanding neural modulatory signatures of ideational processes with tDCS strongly benefits from evaluating cognitive status and control functions.
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Affiliation(s)
- Radwa Khalil
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
| | - Sergio Agnoli
- Department of Life Sciences, University of Trieste, Trieste, Italy
- Marconi Institute for Creativity, Sasso Marconi, Italy
| | - Serena Mastria
- Department of Psychology, University of Bologna, Bologna, Italy
| | - Angela Kondinska
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
| | - Ahmed A. Karim
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
- Department of Psychiatry and Psychotherapy, University Clinic Tübingen, Tübingen, Germany
- Department of Health Psychology and Neurorehabilitation, SRH Mobile University, Riedlingen, Germany
| | - Ben Godde
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
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Khalil R, Karim AA, Godde B. Less might be more: 1 mA but not 1.5 mA of tDCS improves tactile orientation discrimination. IBRO Neurosci Rep 2023; 15:186-192. [PMID: 37746157 PMCID: PMC10511473 DOI: 10.1016/j.ibneur.2023.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 08/08/2023] [Accepted: 08/17/2023] [Indexed: 09/26/2023] Open
Abstract
Background Transcranial direct current stimulation (tDCS) is a frequently used brain stimulation method; however, studies on tactile perception using tDCS are inconsistent, which might be explained by the variations in endogenous and exogenous parameters that influence tDCS. Objectives We aimed to investigate the effect of one of these endogenous parameters-the tDCS amplitude-on tactile perception. Methods We conducted this experiment on 28 undergraduates/graduates aged 18-36 years. In separate sessions, participants received 20 min of 1 mA or 1.5 mA current tDCS in a counterbalanced order. Half of the participants received anodal tDCS of the left SI coupled with cathodal tDCS of the right SI, and this montage was reversed for the other half. Pre- and post-tDCS tactile discrimination performance was assessed using the Grating Orientation Task (GOT). In this task, plastic domes with gratings of different widths cut into their surfaces are placed on the fingertip, and participants have to rate the orientation of the gratings. Results Linear modeling with amplitude, dome, and session as within factors and montage as between factors revealed the following: significant main effects of grating width, montage, and session and a marginally significant interaction effect of session and amplitude. Posthoc t-tests indicated that performance in GOT improved after 1 mA but not 1.5 mA tDCS independent of the montage pattern of the electrodes. Conclusion Increasing the stimulation amplitude from 1 mA to 1.5 mA does not facilitate the tDCS effect on GOT performance. On the contrary, the effect seemed more robust for the lower-current amplitude.
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Affiliation(s)
- Radwa Khalil
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
| | - Ahmed A. Karim
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
- Department of Psychiatry and Psychotherapy, University Clinic Tübingen, Tübingen, Germany
- Department of Health Psychology and Neurorehabilitation, SRH Mobile University, Riedlingen, Germany
| | - Ben Godde
- School of Business, Social and Decision Sciences, Constructor University, Bremen, Germany
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Sun L, Lu X, Zheng H, Zeng L, Zheng W, Wang J. Does rDLPFC activity alter trust? Evidence from a tDCS study. Front Neurosci 2023; 17:1213580. [PMID: 37811320 PMCID: PMC10551172 DOI: 10.3389/fnins.2023.1213580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Trust plays an important role in the human economy and people's social lives. Trust is affected by various factors and is related to many brain regions, such as the dorsolateral prefrontal cortex (DLPFC). However, few studies have focused on the impact of the DLPFC on trust through transcranial direct current stimulation (tDCS), although abundant psychology and neuroscience studies have theoretically discussed the possible link between DLPFC activity and trust. In the present study, we aimed to provide evidence of a causal relationship between the rDLPFC and trust behavior by conducting multiple rounds of the classical trust game and applying tDCS over the rDLPFC. We found that overall, anodal stimulation increased trust compared with cathodal stimulation and sham stimulation, while the results in different stages were not completely the same. Our work indicates a causal relationship between rDLPFC excitability and trust behavior and provides a new direction for future research.
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Affiliation(s)
- Letian Sun
- Center for Economic Behavior and Decision-Making (CEBD), Zhejiang University of Finance and Economics, Hangzhou, China
- School of Economics, Zhejiang University of Finance and Economics, Hangzhou, China
| | - Xinbo Lu
- Center for Economic Behavior and Decision-Making (CEBD), Zhejiang University of Finance and Economics, Hangzhou, China
- School of Economics, Jiaxing University, Jiaxing, China
| | - Haoli Zheng
- Center for Economic Behavior and Decision-Making (CEBD), Zhejiang University of Finance and Economics, Hangzhou, China
- School of Economics, Zhejiang University of Finance and Economics, Hangzhou, China
| | - Lulu Zeng
- Center for Economic Behavior and Decision-Making (CEBD), Zhejiang University of Finance and Economics, Hangzhou, China
- School of Economics, Zhejiang University of Finance and Economics, Hangzhou, China
| | - Wanjun Zheng
- Center for Economic Behavior and Decision-Making (CEBD), Zhejiang University of Finance and Economics, Hangzhou, China
- School of Economics, Zhejiang University of Finance and Economics, Hangzhou, China
| | - Jinjin Wang
- Center for Economic Behavior and Decision-Making (CEBD), Zhejiang University of Finance and Economics, Hangzhou, China
- School of Economics, Zhejiang University of Finance and Economics, Hangzhou, China
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Soleimani G, Towhidkhah F, Saviz M, Ekhtiari H. Cortical Morphology in Cannabis Use Disorder: Implications for Transcranial Direct Current Stimulation Treatment. Basic Clin Neurosci 2023; 14:647-662. [PMID: 38628838 PMCID: PMC11016884 DOI: 10.32598/bcn.2021.3400.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/18/2021] [Accepted: 05/27/2023] [Indexed: 04/19/2024] Open
Abstract
Introduction Transcranial direct current stimulation (tDCS) has been studied as an adjunctive treatment option for substance use disorders (SUDs). Alterations in brain structure following SUD may change tDCS-induced electric field (EF) and subsequent responses; however, group-level differences between healthy controls (HC) and participants with SUDs in terms of EF and its association with cortical architecture have not yet been modeled quantitatively. This study provides a methodology for group-level analysis of computational head models to investigate the influence of cortical morphology metrics on EFs. Methods Whole-brain surface-based morphology was conducted, and cortical thickness, volume, and surface area were compared between participants with cannabis use disorders (CUD) (n=20) and age-matched HC (n=22). Meanwhile, EFs were simulated for bilateral tDCS over the dorsolateral prefrontal cortex. The effects of structural alterations on EF distribution were investigated based on individualized computational head models. Results Regarding EF, no significant difference was found within the prefrontal cortex; however, EFs were significantly different in left-postcentral and right-superior temporal gyrus (P<0.05) with higher levels of variance in CUD compared to HC [F(39, 43)=5.31, P<0.0001, C=0.95]. Significant differences were observed in cortical area (caudal anterior cingulate and rostral middle frontal), thickness (lateral orbitofrontal), and volume (paracentral and fusiform) between the two groups. Conclusion Brain morphology and tDCS-induced EFs may be changed following CUD; however, differences between CUD and HCs in EFs do not always overlap with brain areas that show structural alterations. To sufficiently modulate stimulation targets, whether individuals with CUD need different stimulation doses based on tDCS target location should be checked.
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Affiliation(s)
- Ghazaleh Soleimani
- Department of Biomedical Engineering, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Farzad Towhidkhah
- Department of Biomedical Engineering, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mehrdad Saviz
- Department of Biomedical Engineering, Faculty of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hamed Ekhtiari
- Laureate Institute of Brain Research, Tulsa, United States of America
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van ’t Wout-Frank M, Garnaat SL, Faucher CR, Arulpragasam AR, Cole JE, Philip NS, Burwell RD. Transcranial direct current stimulation impairs updating of avoidance-based associative learning. Front Hum Neurosci 2023; 17:1104614. [PMID: 37169017 PMCID: PMC10164989 DOI: 10.3389/fnhum.2023.1104614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 04/03/2023] [Indexed: 05/13/2023] Open
Abstract
Introduction Exposure-based psychotherapies for the treatment of anxiety- and fear-based disorders rely on "corrective" associative learning. Namely the repeated confrontation with feared stimuli in the absence of negative outcomes allows the formation of new, corrected associations of safety, indicating that such stimuli no longer need to be avoided. Unfortunately, exposure-facilitated corrective learning tends to be bound by context and often poorly generalizes. One brain structure, the prefrontal cortex, is implicated in context-guided behavior and may be a relevant target for improving generalization of safety learning. Here, we tested whether inhibition of the left prefrontal cortex causally impaired updating of context-bound associations specifically or, alternatively, impaired updating of learned associations irrespective of contextual changes. Additionally, we tested whether prefrontal inhibition during corrective learning influenced subsequent generalization of associations to a novel context. Methods In two separate experiments, participants received either 10 min of 2 mA cathodal transcranial direct current stimulation (tDCS) over EEG coordinate F3 (Experiment 1 n = 9, Experiment 2 n = 22) or sham stimulation (Experiment 1 n = 10, Experiment 2 n = 22) while previously learned associations were reversed in the same or a different context from initial learning. Next, to assess generalization of learning, participants were asked to indicate which of the previously seen images they preferred in a novel, never seen before context. Results Results indicate that tDCS significantly impaired reversal irrespective of context in Experiment 2 only. When taking learning rate across trials into account, both experiments suggest that participants who received sham had the greatest learning rate when reversal occurred in a different context, as expected, whereas participants who received active tDCS in this condition had the lowest learning rate. However, active tDCS was associated with preferring the originally disadvantageous, but then neural stimulus after stimulus after reversal occurred in a different context in Experiment 1 only. Discussion These results support a causal role for the left prefrontal cortex in the updating of avoidance-based associations and encourage further inquiry investigating the use of non-invasive brain stimulation on flexible updating of learned associations.
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Affiliation(s)
- Mascha van ’t Wout-Frank
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School, Brown University, Providence, RI, United States
- COBRE Center for Neuromodulation, Butler Hospital, Providence, RI, United States
- Center for Neurorestoration and Neurotechnology, VA Providence Healthcare System, Providence, RI, United States
| | - Sarah L. Garnaat
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School, Brown University, Providence, RI, United States
- COBRE Center for Neuromodulation, Butler Hospital, Providence, RI, United States
| | - Christiana R. Faucher
- Center for Neurorestoration and Neurotechnology, VA Providence Healthcare System, Providence, RI, United States
| | - Amanda R. Arulpragasam
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School, Brown University, Providence, RI, United States
- Center for Neurorestoration and Neurotechnology, VA Providence Healthcare System, Providence, RI, United States
- Department of Cognitive, Linguistic and Psychological Sciences, Brown University, Providence, RI, United States
| | - Julia E. Cole
- COBRE Center for Neuromodulation, Butler Hospital, Providence, RI, United States
| | - Noah S. Philip
- Department of Psychiatry and Human Behavior, Warren Alpert Medical School, Brown University, Providence, RI, United States
- COBRE Center for Neuromodulation, Butler Hospital, Providence, RI, United States
- Center for Neurorestoration and Neurotechnology, VA Providence Healthcare System, Providence, RI, United States
| | - Rebecca D. Burwell
- COBRE Center for Neuromodulation, Butler Hospital, Providence, RI, United States
- Department of Cognitive, Linguistic and Psychological Sciences, Brown University, Providence, RI, United States
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Linnhoff S, Haghikia A, Zaehle T. Effects of repetitive twice-weekly transcranial direct current stimulations on fatigue and fatigability in people with multiple sclerosis. Sci Rep 2023; 13:5878. [PMID: 37041183 PMCID: PMC10090173 DOI: 10.1038/s41598-023-32779-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 04/02/2023] [Indexed: 04/13/2023] Open
Abstract
Fatigue is associated with a dramatically decreased quality of life in people with multiple sclerosis (pwMS). It refers to a constant subjective feeling of exhaustion and performance decline, known as fatigability. However, inconsistency and heterogeneity in defining and assessing fatigue have led to limited advances in understanding and treating MS-associated fatigue. Transcranial direct current stimulation (tDCS) has emerged as a promising, non-pharmaceutical treatment strategy for subjective fatigue. However, whether repetitive tDCS also have long-term effects on time-on-task performance has not yet been investigated. This pseudorandomized, single-blinded, and sham-controlled study investigated tDCS effects on behavioral and electrophysiological parameters. 18 pwMS received eight twice-weekly 30 min stimulations over the left dorsolateral prefrontal cortex. Fatigability was operationalized as time-on-task-related changes in reaction time variability and P300 amplitude. Additionally, subjective trait and state fatigue ratings were assessed. The results revealed an overall decrease in subjective trait fatigue ratings that lasted at least four weeks after the stimulations. However, the ratings declined after both anodal and sham tDCS. No effects were found on subjective state fatigue and objective fatigability parameters. Linear Mixed Models and Bayesian Regression models likewise favored the absence of a tDCS effect on fatigability parameters. The results confirm the complex relationship between MS-associated fatigue and fatigability. Reliable and clinically relevant parameters need to be established to extend the potential of tDCS for treating fatigability. Furthermore, our results indicate that consecutive stimulations rather than twice-weekly stimulations should be the preferred stimulation scheme in future studies.
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Affiliation(s)
- Stefanie Linnhoff
- Department of Neurology, Otto-von-Guericke-University Magdeburg, Leipziger Street 44, 39120, Magdeburg, Germany
| | - Aiden Haghikia
- Department of Neurology, Otto-von-Guericke-University Magdeburg, Leipziger Street 44, 39120, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
- German Center for Neurodegenerative Diseases (DZNE), 39120, Magdeburg, Germany
| | - Tino Zaehle
- Department of Neurology, Otto-von-Guericke-University Magdeburg, Leipziger Street 44, 39120, Magdeburg, Germany.
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany.
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Menze I, Mueller NG, Zaehle T, Schmicker M. Individual response to transcranial direct current stimulation as a function of working memory capacity and electrode montage. Front Hum Neurosci 2023; 17:1134632. [PMID: 36968784 PMCID: PMC10034341 DOI: 10.3389/fnhum.2023.1134632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/01/2023] [Indexed: 03/11/2023] Open
Abstract
IntroductionAttempts to improve cognitive abilities via transcranial direct current stimulation (tDCS) have led to ambiguous results, likely due to the method’s susceptibility to methodological and inter-individual factors. Conventional tDCS, i.e., using an active electrode over brain areas associated with the targeted cognitive function and a supposedly passive reference, neglects stimulation effects on entire neural networks.MethodsWe investigated the advantage of frontoparietal network stimulation (right prefrontal anode, left posterior parietal cathode) against conventional and sham tDCS in modulating working memory (WM) capacity dependent transfer effects of a single-session distractor inhibition (DIIN) training. Since previous results did not clarify whether electrode montage drives this individual transfer, we here compared conventional to frontoparietal and sham tDCS and reanalyzed data of 124 young, healthy participants in a more robust way using linear mixed effect modeling.ResultsThe interaction of electrode montage and WM capacity resulted in systematic differences in transfer effects. While higher performance gains were observed with increasing WM capacity in the frontoparietal stimulation group, low WM capacity individuals benefited more in the sham condition. The conventional stimulation group showed subtle performance gains independent of WM capacity.DiscussionOur results confirm our previous findings of WM capacity dependent transfer effects on WM by a single-session DIIN training combined with tDCS and additionally highlight the pivotal role of the specific electrode montage. WM capacity dependent differences in frontoparietal network recruitment, especially regarding the parietal involvement, are assumed to underlie this observation.
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Affiliation(s)
- Inga Menze
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
- *Correspondence: Inga Menze,
| | - Notger G. Mueller
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
- Research Group Degenerative and Chronic Diseases, Movement, Faculty of Health Sciences Brandenburg, University of Potsdam, Potsdam, Germany
| | - Tino Zaehle
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Marlen Schmicker
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
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Abul Hasan M, Shahid H, Ahmed Qazi S, Ejaz O, Danish Mujib M, Vuckovic A. Underpinning the neurological source of executive function following cross hemispheric tDCS stimulation. Int J Psychophysiol 2023; 185:1-10. [PMID: 36634750 DOI: 10.1016/j.ijpsycho.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 12/22/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
Transcranial direct current stimulation (tDCS) is a promising technique for enhancement of executive functions in healthy as well as neurologically disturbed patients. However, the evidence regarding the neuropsychological and behavioral change with neurophysiological shifts as well as the mechanism of tDCS action as evidenced by activation of neuronal sources important for executive functions have remained unaddressed. The study thereby endeavors to (1) determine the neuropsychological, behavioral, and neurophysiological change induced with five sessions of bilateral tDCS stimulation and (2) identify putative neuronal sources related to the executive functions responsible for neuropsychological and behavioral change. For this single blinded study, a total of 40 healthy participants, randomly allocated to active (n = 19) or sham (n = 21) groups completed five sessions of 2 mA tDCS stimulation administered over Dorso-Lateral Prefrontal Cortex (DLPFC) (F3 as anode, F4 as cathode). Repeated measure analysis was performed on neuropsychological (Everyday Memory Questionnaire and Mindful Attention Awareness Scale), and behavioral assessment (n-Back and Stroop tests) to investigate within and between group differences. Pre and post neurophysiological (Electroencephalogram) results showed that bilateral tDCS stimulation activates cortical regions responsible for executive functions including updation (working memory) and inhibition (interference control or attention). Multiple sessions of bilateral tDCS stimulation results in a significant increase in theta, alpha, and beta-band activity in the DLPFC, cingulate and parietal cortex. This study provides evidence that tDCS can be used for performance enhancement of executive functions in able-bodied people.
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Affiliation(s)
- Muhammad Abul Hasan
- Department of Biomedical Engineering, NED University of Engineering & Technology, Karachi, Pakistan; Neurocomputation Laboratory, National Center of Artificial Intelligence, Karachi, Pakistan
| | - Hira Shahid
- Neurocomputation Laboratory, National Center of Artificial Intelligence, Karachi, Pakistan; Research Centre for Intelligent Healthcare, Coventry University, Coventry, United Kingdom.
| | - Saad Ahmed Qazi
- Neurocomputation Laboratory, National Center of Artificial Intelligence, Karachi, Pakistan; Department of Electrical Engineering, NED University of Engineering & Technology, Karachi, Pakistan
| | - Osama Ejaz
- Neurocomputation Laboratory, National Center of Artificial Intelligence, Karachi, Pakistan
| | - Muhammad Danish Mujib
- Department of Biomedical Engineering, NED University of Engineering & Technology, Karachi, Pakistan
| | - Aleksandra Vuckovic
- Biomedical Engineering Division, University of Glasgow, Glasgow, United Kingdom
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12
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Palmisano A, Chiarantoni G, Bossi F, Conti A, D'Elia V, Tagliente S, Nitsche MA, Rivolta D. Face pareidolia is enhanced by 40 Hz transcranial alternating current stimulation (tACS) of the face perception network. Sci Rep 2023; 13:2035. [PMID: 36739325 PMCID: PMC9899232 DOI: 10.1038/s41598-023-29124-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Pareidolia refers to the perception of ambiguous sensory patterns as carrying a specific meaning. In its most common form, pareidolia involves human-like facial features, where random objects or patterns are illusionary recognized as faces. The current study investigated the neurophysiological correlates of face pareidolia via transcranial alternating current stimulation (tACS). tACS was delivered at gamma (40 Hz) frequency over critical nodes of the "face perception" network (i.e., right lateral occipito-temporal and left prefrontal cortex) of 75 healthy participants while completing four face perception tasks ('Mooney test' for faces, 'Toast test', 'Noise pareidolia test', 'Pareidolia task') and an object perception task ('Mooney test' for objects). In this single-blind, sham-controlled between-subjects study, participants received 35 min of either Sham, Online, (40Hz-tACS_ON), or Offline (40Hz-tACS_PRE) stimulation. Results showed that face pareidolia was causally enhanced by 40Hz-tACS_PRE in the Mooney test for faces in which, as compared to sham, participants more often misperceived scrambled stimuli as faces. In addition, as compared to sham, participants receiving 40Hz-tACS_PRE showed similar reaction times (RTs) when perceiving illusory faces and correctly recognizing noise stimuli in the Toast test, thus not exhibiting hesitancy in identifying faces where there were none. Also, 40Hz-tACS_ON induced slower rejections of face pareidolia responses in the Noise pareidolia test. The current study indicates that 40 Hz tACS can enhance pareidolic illusions in healthy individuals and, thus, that high frequency (i.e., gamma band) oscillations are critical in forming coherent and meaningful visual perception.
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Affiliation(s)
- Annalisa Palmisano
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy.
| | - Giulio Chiarantoni
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | | | - Alessio Conti
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Vitiana D'Elia
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Serena Tagliente
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Michael A Nitsche
- Department of Psychology and Neurosciences, Leibniz Research Center for Working Environment and Human Factors (IfADo), Dortmund, Germany.,Department of Neurology, University Medical Hospital Bergmannsheil, Bochum, Germany
| | - Davide Rivolta
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy.,School of Psychology, University of East London (UEL), London, UK
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13
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Farpour S, Asadi-Shekaari M, Borhani Haghighi A, Farpour HR. Improving Swallowing Function and Ability in Post Stroke Dysphagia: A Randomized Clinical Trial. Dysphagia 2023; 38:330-339. [PMID: 35715574 PMCID: PMC9205412 DOI: 10.1007/s00455-022-10470-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 05/21/2022] [Indexed: 01/27/2023]
Abstract
Post-stroke dysphagia is a prevalent, life threatening condition. Scientists recommended implementing behavioral therapies with new technologies such as transcranial direct current of stimulation (TDCS). Studies showed promising TDCS effects, and scientists suggested the investigation of the effectiveness of different montages. Supramarginal gyrus (SMG) is important in swallowing function. Our study aimed to investigate the effectiveness of stimulating SMG in improving post-stroke dysphagia. Forty-four patients finished the study (a randomized, double-blind one). All of them received behavioral therapy. The real group received anodal (2 mA, 20 min) stimulation on the intact SMG, and the sham group received the same for 30 s (5 sessions). Patients were assessed with Functional Oral Intake Scale (FOIS) and Mann Assessment of Swallowing Ability (MASA) after treatment and at one-month follow-up. The results showed that the difference between groups at baseline was not significant. According to MASA both groups improved significantly during the time (p-value < 0.001). The improvement in the real group was significantly higher than in the sham group after treatment (p-value = 0.002) and after one-month follow-up (p-value < 0.001). According to FOIS, most of the patients in the real group (72.70%) reached level 6 or 7 after one-month follow-up which was significantly higher than the sham group (31.80%, p-value = 0.007). In conclusion, TDCS applied to the scalp's surface associated with SMG localization may improve swallowing function in the stroke patients with dysphagia.
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Affiliation(s)
- Sima Farpour
- grid.412105.30000 0001 2092 9755Neuroscience Research Center, Neuropharmacology Institute, Kerman University of Medical Sciences, Kerman, Iran
| | - Majid Asadi-Shekaari
- grid.412105.30000 0001 2092 9755Neuroscience Research Center, Neuropharmacology Institute, Kerman University of Medical Sciences, Kerman, Iran
| | - Afshin Borhani Haghighi
- grid.412571.40000 0000 8819 4698Faculty of Medicine, Clinical Neurology Research Center, Shiraz University of Medical Sciences, Khalili Street, Shiraz, Iran
- grid.412571.40000 0000 8819 4698Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hamid Reza Farpour
- grid.412571.40000 0000 8819 4698Faculty of Medicine, Bone and Joint Diseases Research Center, Department of Physical Medicine and Rehabilitation, Shiraz University of Medical Sciences, Emam Hossein Street, Shiraz, Iran
- grid.412571.40000 0000 8819 4698Bone and Joint Diseases Research Center, Department of Physical Medicine and Rehabilitation, Shiraz University of Medical Sciences, Shiraz, Iran
- grid.412571.40000 0000 8819 4698Shiraz Geriatrics Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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14
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Rahimi V, Mohammadkhani G, Alaghband Rad J, Mousavi SZ, Khalili ME. Modulation of auditory temporal processing, speech in noise perception, auditory-verbal memory, and reading efficiency by anodal tDCS in children with dyslexia. Neuropsychologia 2022; 177:108427. [PMID: 36410540 DOI: 10.1016/j.neuropsychologia.2022.108427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 10/30/2022] [Accepted: 11/17/2022] [Indexed: 11/23/2022]
Abstract
Dyslexia is a neurodevelopmental disorder that is prevalent in children. It is estimated that 30-50% of individuals diagnosed with dyslexia also manifest an auditory perceptual deficit characteristic of auditory processing disorder (APD). Some studies suggest that defects in basic auditory processing can lead to phonological defects as the most prominent cause of dyslexia. Thus, in some cases, there may be interrelationships between dyslexia and some of the aspects of central auditory processing. In recent years, transcranial direct current stimulation (tDCS) has been used as a safe method for the modulation of central auditory processing aspects in healthy adults and reading skills in children with dyslexia. Therefore, the objectives of our study were to investigate the effect of tDCS on the modulation of different aspects of central auditory processing, aspects of reading, and the relationship between these two domains in dyslexic children with APD. A within-subjects design was employed to investigate the effect of two electrode arrays (the anode on the left STG (AC)/cathode on the right shoulder and anode on the left STG/cathode on the right STG) on auditory temporal processing; speech-in-noise perception, short-term auditory memory; and high-frequency word, low-frequency word, pseudoword, and text reading. The results of this clinical trial showed the modulation of the studied variables in central auditory processing and the accuracy and speed of reading variables compared to the control and sham statuses in both electrode arrays. Our results also showed that the improvement of the accuracy and speed of text reading, as well as the accuracy of pseudoword reading were related to the improvement of speech in noise perception and temporal processing. The results of this research can be effective in clarifying the basis of the neurobiology of dyslexia and, in particular, the hypothesis of the role of basic auditory processing and subsequently the role of the auditory cortex in dyslexia. These results might provide a framework to facilitate behavioral rehabilitation in dyslexic children with APD.
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Affiliation(s)
- Vida Rahimi
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Science, Tehran, Iran
| | - Ghassem Mohammadkhani
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Science, Tehran, Iran.
| | - Javad Alaghband Rad
- Department of Psychiatry, Tehran University of Medical Sciences, Roozbeh Hospital, Tehran, Iran
| | - Seyyedeh Zohre Mousavi
- Department of Speech Therapy, School of Rehabilitation, Iran University of Medical Science, Tehran, Iran
| | - Mohammad Ehsan Khalili
- Department of Audiology, School of Rehabilitation, Tehran University of Medical Science, Tehran, Iran
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15
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Sun W, Song J, Dong X, Kang X, He B, Zhao W, Li Z, Feng Z, Chen X. Bibliometric and visual analysis of transcranial direct current stimulation in the web of science database from 2000 to 2022 via CiteSpace. Front Hum Neurosci 2022; 16:1049572. [PMID: 36530203 PMCID: PMC9751488 DOI: 10.3389/fnhum.2022.1049572] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 10/31/2022] [Indexed: 12/03/2022] Open
Abstract
Objective This study aimed to evaluate the current research hotspots and development tendency of Transcranial Direct Current Stimulation (tDCS) in the field of neurobiology from a bibliometric perspective by providing visualized information to scientists and clinicians. Materials and methods Publications related to tDCS published between 2000 and 2022 were retrieved from the Web of Science Core Collection (WOSCC) on May 5, 2022. Bibliometric features including the number of publications and citations, citation frequency, H-index, journal impact factors, and journal citation reports were summarized using Microsoft Office Excel. Co-authorship, citation, co-citation, and co-occurrence analyses among countries, institutions, authors, co-authors, journals, publications, references, and keywords were analyzed and visualized using CiteSpace (version 6.1.R3). Results A total of 4,756 publications on tDCS fulfilled the criteria we designed and then were extracted from the WOSCC. The United States (1,190 publications, 25.02%) and Harvard University (185 publications, 3.89%) were the leading contributors among all the countries and institutions, respectively. NITSCHE MA and FREGNI F, two key researchers, have made great achievements in tDCS. Brain Stimulation (306 publications) had the highest number of publications relevant to tDCS and the highest number of citations (4,042 times). In terms of potential hotspots, we observed through reference co-citation analysis timeline viewer related to tDCS that "depression"#0, "Sensorimotor network"#10, "working memory"#11, and "Transcranial magnetic stimulation"#9 might be the future research hotspots, while keywords with the strong burst and still ongoing were "intensity" (2018-2022), "impairment" (2020-2022), "efficacy" (2020-2022), and "guideline" (2020-2022). Conclusion This was the first-ever study of peer-reviewed publications relative to tDCS using several scientometric and visual analytic methods to quantitatively and qualitatively reveal the current research status and trends in the field of tDCS. Through the bibliometric method, we gained an in-depth understanding of the current research status and development trend on tDCS. Our research and analysis results might provide some practical sources for academic scholars and clinicians.
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Affiliation(s)
- Weiming Sun
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China,Jiangxi Medical College, Nanchang University, Nanchang, China,Weiming Sun,
| | - JingJing Song
- Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Xiangli Dong
- Jiangxi Medical College, Nanchang University, Nanchang, China,Department of Psychosomatic Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xizhen Kang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China,Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Binjun He
- School of Life Science, Nanchang University, Nanchang, China
| | - Wentao Zhao
- The Third Clinical Department, China Medical University, Shenyang, China
| | - Zhaoting Li
- School of Life Science, Nanchang University, Nanchang, China
| | - Zhen Feng
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China,Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Xiuping Chen
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China,Jiangxi Medical College, Nanchang University, Nanchang, China,*Correspondence: Xiuping Chen,
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16
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Lisoni J, Baldacci G, Nibbio G, Zucchetti A, Butti Lemmi Gigli E, Savorelli A, Facchi M, Miotto P, Deste G, Barlati S, Vita A. Effects of bilateral, bipolar-nonbalanced, frontal transcranial Direct Current Stimulation (tDCS) on negative symptoms and neurocognition in a sample of patients living with schizophrenia: Results of a randomized double-blind sham-controlled trial. J Psychiatr Res 2022; 155:430-442. [PMID: 36182772 DOI: 10.1016/j.jpsychires.2022.09.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/20/2022] [Accepted: 09/12/2022] [Indexed: 10/31/2022]
Abstract
Negative symptoms (NS), conceived as Avolition-Apathy (AA) and Expressive Deficit (EXP) domains, and neurocognitive impairments represent unmet therapeutic needs for patients with schizophrenia. The present study investigated if bilateral bipolar-nonbalanced frontal transcranial Direct Current Stimulation (tDCS) could improve these psychopathological dimensions. This randomized, double-blind, sham-controlled study (active-tDCS versus sham-tDCS, both, n = 25) included 50 outpatients diagnosed with schizophrenia clinically stabilized. Patients received 20-min 2 mA active-tDCS or sham-tDCS (anode: left Dorsolateral Prefrontal Cortex; cathode: right orbitofrontal region). Primary outcomes included: PANSS-Negative subscale, Negative Factor (Neg-PANSS), AA and EXP domains; neurocognitive performance at Brief Assessment of Cognition in Schizophrenia. Secondary outcomes included: PANSS subscales and total score, Disorganized/Concrete (DiscC-PANSS) and Positive Factors, Clinical Global Impression (CGI) scores, clinical insight at Scale to Assess Unawareness of Mental Disorder (SUMD). Analysis of covariance (ANCOVA) was performed evaluating between-group changes over time. Significant improvements following active-tDCS were observed for all NS measures (all, p < 0.001; d > 0.8) and for working memory (p = 0.025, d = 0.31). Greater variations following to active treatment emerged also for PANSS-General Psychopathology subscale (p < 0.001; d = 0.54), PANSS total score (p < 0.001; d = 0.69), CGI indexes (all, p < 0.001; d > 0.6), DiscC-PANSS (p < 0.001; d = 0.80) and SUMD-general Unawareness index (p = 0.005; d = 0.15) but not for positive symptoms and others insight measures. Good safety/tolerability profiles were found. Bilateral bipolar-nonbalanced frontal-tDCS is a non-pharmacological approach in schizophrenia effectively improving NS, particularly the AA and EXP domains, probably acting by modulating dysfunctional cortical-subcortical networks. Preliminary results also suggest working memory improvements following tDCS. Further studies are needed to confirm the neurobiological basis of these results.
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Affiliation(s)
- Jacopo Lisoni
- Department of Mental Health and Addiction Services, ASST Spedali Civili of Brescia, Brescia, Italy.
| | - Giulia Baldacci
- Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Gabriele Nibbio
- Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Andrea Zucchetti
- Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | | | - Arianna Savorelli
- Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Michele Facchi
- Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Paola Miotto
- Department of Mental Health and Addiction Services, ASST Spedali Civili of Brescia, Brescia, Italy
| | - Giacomo Deste
- Department of Mental Health and Addiction Services, ASST Spedali Civili of Brescia, Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Stefano Barlati
- Department of Mental Health and Addiction Services, ASST Spedali Civili of Brescia, Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Antonio Vita
- Department of Mental Health and Addiction Services, ASST Spedali Civili of Brescia, Brescia, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
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17
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Ashaie SA, Engel S, Cherney LR. Timing of transcranial direct current stimulation (tDCS) combined with speech and language therapy (SLT) for aphasia: study protocol for a randomized controlled trial. Trials 2022; 23:668. [PMID: 35978374 PMCID: PMC9386930 DOI: 10.1186/s13063-022-06627-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/03/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Studies suggest that language recovery in aphasia may be improved by pairing speech-language therapy with transcranial direct current stimulation. However, results from many studies have been inconclusive regarding the impact transcranial direct current stimulation may have on language recovery in individuals with aphasia. An important factor that may impact the efficacy of transcranial direct current stimulation is its timing relative to speech-language therapy. Namely, online transcranial direct current stimulation (paired with speech-language therapy) and offline transcranial direct current stimulation (prior to or following speech-language therapy) may have differential effects on language recovery in post-stroke aphasia. Transcranial direct current stimulation provided immediately before speech-language therapy may prime the language system whereas stimulation provided immediately after speech-language therapy may aid in memory consolidation. The main aim of this study is to investigate the differential effects of offline and online transcranial direct stimulation on language recovery (i.e., conversation) in post-stroke aphasia. METHODS/DESIGN The study is a randomized, parallel-assignment, double-blind treatment study. Participants will be randomized to one of four treatment conditions and will participate in 15 treatment sessions. All groups receive speech-language therapy in the form of computer-based script practice. Three groups will receive transcranial direct current stimulation: prior to speech-language therapy, concurrent with speech-language therapy, or following speech-language therapy. One group will receive sham stimulation (speech-language therapy only). We aim to include 12 participants per group (48 total). We will use fMRI-guided neuronavigation to determine placement of transcranial direct stimulation electrodes on participants' left angular gyrus. Participants will be assessed blindly at baseline, immediately post-treatment, and at 4 weeks and 8 weeks following treatment. The primary outcome measure is change in the rate and accuracy of the trained conversation script from baseline to post-treatment. DISCUSSION Results from this study will aid in determining the optimum timing to combine transcranial direct current stimulation with speech-language therapy to facilitate better language outcomes for individuals with aphasia. In addition, effect sizes derived from this study may also inform larger clinical trials investigating the impact of transcranial direct current stimulation on functional communication in individuals with aphasia. TRIAL REGISTRATION ClinicalTrials.gov NCT03773406. December 12, 2018.
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Affiliation(s)
- Sameer A Ashaie
- Center for Aphasia Research and Treatment, Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA.,Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Samantha Engel
- Center for Aphasia Research and Treatment, Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA
| | - Leora R Cherney
- Center for Aphasia Research and Treatment, Shirley Ryan AbilityLab, 355 E. Erie St, Chicago, IL, 60611, USA. .,Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA. .,Communication Sciences and Disorders, Northwestern University, Evanston, IL, USA.
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18
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Masina F, Montemurro S, Marino M, Manzo N, Pellegrino G, Arcara G. State-dependent tDCS modulation of the somatomotor network: A MEG study. Clin Neurophysiol 2022; 142:133-142. [PMID: 36037749 DOI: 10.1016/j.clinph.2022.07.508] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/13/2022] [Accepted: 07/30/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Transcranial direct current stimulation (tDCS) is a non-invasive technique widely used to investigate brain excitability and activity. However, the variability in both brain and behavioral responses to tDCS limits its application for clinical purposes. This study aims to shed light on state-dependency, a phenomenon that contributes to the variability of tDCS. METHODS To this aim, we investigated changes in spectral activity and functional connectivity in somatomotor regions after Real and Sham tDCS using generalized additive mixed models (GAMMs), which allowed us to investigate how modulation depends on the initial state of the brain. RESULTS Results showed that changes in spectral activity, but not connectivity, in the somatomotor regions depend on the initial state of the brain, confirming state-dependent effects. Specifically, we found a non-linear interaction between stimulation conditions (Real vs Sham) and initial state: a reduction of alpha and beta power was observed only in participants that had higher alpha and beta power before Real tDCS. CONCLUSIONS This study highlights the importance of considering state-dependency to tDCS and shows how it can be taken into account with appropriate statistical models. SIGNIFICANCE Our findings bear insight into tDCS mechanisms, potentially leading to discriminate between tDCS responders and non-responders.
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Affiliation(s)
| | | | - Marco Marino
- IRCCS San Camillo Hospital, Venice, Italy; Department of Movement Sciences, Research Center for Motor Control and Neuroplasticity, KU Leuven, Belgium.
| | - Nicoletta Manzo
- IRCCS San Camillo Hospital, Venice, Italy; Department of Human Neurosciences, Sapienza, University of Rome, Rome, Italy.
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19
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Ekhtiari H, Soleimani G, Kuplicki R, Yeh H, Cha Y, Paulus M. Transcranial direct current stimulation to modulate fMRI drug cue reactivity in methamphetamine users: A randomized clinical trial. Hum Brain Mapp 2022; 43:5340-5357. [PMID: 35915567 PMCID: PMC9812244 DOI: 10.1002/hbm.26007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/31/2022] [Accepted: 06/03/2022] [Indexed: 01/15/2023] Open
Abstract
Transcranial direct current stimulation (tDCS) has been studied as a therapeutic option to alter maladaptive brain functions associated with chronic substance use. We present a randomized, triple-blind, sham-controlled, clinical trial to determine the neural substrates of tDCS effects on drug craving. Sixty participants with methamphetamine use disorder were assigned to two groups: active tDCS (5 x 7 cm2 , 2 mA, 20 min, anode/cathode over the F4/Fp1) and sham stimulation. Neuroimaging data of a methamphetamine cue reactivity task were collected immediately before and after stimulation. There was a significant reduction in self-reported craving after stimulation without any significant effect of time-by-group interaction. Our whole-brain analysis demonstrated that there was a global decrease in brain reactivity to cues following sham but not active tDCS. There were significant time-by-group interactions in five main clusters in middle and inferior frontal gyri, anterior insula, inferior parietal lobule, and precuneus with higher activations after active stimulation. There was a significant effect of stimulation type in the relationship between electrical current at the individual level and changes in task-modulated activation. Brain regions with the highest electric current in the prefrontal cortex showed a significant time-by-group interaction in task-modulated connectivity in the frontoparietal network. In this trial, there was no significant effect of the one session of active-F4/Fp1 tDCS on drug craving self-report compared to sham stimulation. However, activation and connectivity differences induced by active compared to sham stimulation suggested some potential mechanisms of tDCS to modulate neural response to drug cues.
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Affiliation(s)
| | - Ghazaleh Soleimani
- Department of Biomedical EngineeringAmirkabir University of TechnologyTehranIran,Iranian National Center for Addiction StudiesTehran University of Medical SciencesTehranIran
| | | | - Hung‐Wen Yeh
- UMKC School of MedicineUniversity of Missouri‐Kansas City School of MedicineKansa CityMissouriUSA
| | - Yoon‐Hee Cha
- Department of Psychiatry, Medical schoolUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Martin Paulus
- Laureate Institute for Brain ResearchTulsaOklahomaUSA
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20
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Bonato M, Gallucci S, Chiaramello E, Fiocchi S, Ferrucci R, Priori A, Dini M, Bortolomasi M, Parazzini M. Computational Evaluation of Combined Cerebellar and Frontal Transcranial Direct Current Stimulation for Treatment-Resistant Depression. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:4362-4365. [PMID: 36086350 DOI: 10.1109/embc48229.2022.9871462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work aimed to estimate the distribution of the electric field generated by a combined cerebellar and frontal transcranial direct current stimulation (tDCS) for treatment-resistant depression using electromagnetics computational techniques applied to a realistic head human model. Results showed that the stronger electric fields occur mainly in the cerebellum and in DLPFC areas, where the two pairs of electrodes were applied. Furthermore, the study demonstrated that the simultaneous use of the two pairs of electrodes did not imply a lower effectiveness of the tDCS technique, in fact the electric field distributions in the primarily targets of the anatomical regions (i.e., cerebellum and DLPFC) were very similar to when the pairs of electrodes were applied separately.
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Gorsler A, Grittner U, Rackoll T, Külzow N. Efficacy of Unilateral and Bilateral Parietal Transcranial Direct Current Stimulation on Right Hemispheric Stroke Patients With Neglect Symptoms: A Proof-of-Principle Study. BRAIN & NEUROREHABILITATION 2022; 15:e19. [PMID: 36743202 PMCID: PMC9833469 DOI: 10.12786/bn.2022.15.e19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/02/2022] [Accepted: 04/10/2022] [Indexed: 11/08/2022] Open
Abstract
Different transcranial direct current stimulation (tDCS) protocols have been tested to improve visuospatial neglect (VSN). So far, methodological heterogenity limits reliable conclusions about optimal stimualtion set-up. With this proof-of-principle study behavioral effects of two promising (uni- vs. bilateral) stimulation protocols were directly compared to gain more data for an appropriate tDCS protocol in subacute neglect patients. Notably, each tDCS set-up was combined with an identical sham condition to improve comparability. In a double-blind sham-controlled cross-over study 11 subacute post-stroke neglect patients received 20 minutes or 30 seconds (sham) tDCS (2 mA, 0.8 A/m2) parallel to neglect therapy randomized in unilateral (anode-reference: P4-Fp2 10-20 electroencephalography [EEG] system) and bilateral manner (anode-cathode: P4-P3) and 48h wash-out in-between. Before and immediately after stimulation performance were measured in cancellation task (bell test), and line bisection (deviation error). Significant difference between active and assigned sham condition was found in line bisection but not cancellation task. Particularly, deviation error was reduced after bilateral tDCS (hedges g* = 0.6) compared to bilateral sham, no such advantage were obtained for unilateral stimulation (hedges g* = 0.2). Using a direct comparison approach findings add further evidence that stimulating both hemispheres (bilateral) is superior in alleviating VSN symptoms than unilateral stimulation in subacute neglect.
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Affiliation(s)
- Anna Gorsler
- Kliniken Beelitz GmbH, Clinic for Neurological Rehabilitation, Beelitz-Heilstätten, Germany
| | - Ulrike Grittner
- Institute of Biometry and Clinical Epidemiology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany
| | - Torsten Rackoll
- BIH-QUEST Center for Responsible Research, Charité-Universitätsmedizin, Berlin, Berlin, Germany
| | - Nadine Külzow
- Kliniken Beelitz GmbH, Clinic for Neurological Rehabilitation, Beelitz-Heilstätten, Germany
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22
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Perri RL, Perrotta D, Rossani F, Pekala RJ. Boosting the hypnotic experience. Inhibition of the dorsolateral prefrontal cortex alters hypnotizability and sense of agency. A randomized, double-blind and sham-controlled tDCS study. Behav Brain Res 2022; 425:113833. [PMID: 35276309 DOI: 10.1016/j.bbr.2022.113833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/23/2022] [Accepted: 03/05/2022] [Indexed: 11/02/2022]
Abstract
Hypnotizability refers to the individual responsiveness to hypnosis, and literature shows that the greater the hypnotizability, the more effective the hypnotic suggestions. So far, few studies attempted to enhance hypnotizability, and only two adopted brain stimulation with magnetic pulses. In the present study, we aimed to boost hypnotizability through transcranial direct current stimulation (tDCS). To this aim, bilateral tDCS was applied over the dorsolateral prefrontal cortex (DLPFC) with the target electrode providing negative current (cathodal stimulation) over the left hemisphere. Twenty-nine subjects participated in the study and they were randomly assigned to the sham or the active group in a double-blind design. The hypnotic experience was assessed before and after the stimulation through a phenomenological measure of consciousness (the PCI-HAP). The main findings revealed that a single tDCS session enhanced the hypnotic depth by 11% and reduced the volitional control by 30%, while no differences emerged in the sham group. This is the first study adopting the electrical neurostimulation to produce an alteration of hypnotizability and sense of agency, and confirmed the key-role of the DLPFC and executive control in the hypnotic phenomena. If confirmed, these findings could have relevant implications as enhanced hypnotizability could be translated into better outcomes for many hypnotic interventions.
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Affiliation(s)
- Rinaldo L Perri
- University Niccolò Cusano, Rome, Italy; De Sanctis Clinical Center (CCDS), Rome, Italy.
| | | | | | - Ronald J Pekala
- Private Practice, West Chester, PA, USA & Coatesville Veterans Administration Medical Center, Coatesville, PA, USA
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23
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Giel KE, Schag K, Martus P, Max SM, Plewnia C. Ameliorating cognitive control in patients with binge eating disorder by electrical brain stimulation: study protocol of the randomized controlled ACCElect pilot trial. J Eat Disord 2022; 10:26. [PMID: 35183261 PMCID: PMC8857741 DOI: 10.1186/s40337-022-00544-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 01/27/2022] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The current first-line treatment for binge eating disorder (BED), which is psychotherapy, is moderately effective in terms of abstinence from binge-eating. Neurobiological evidence suggests that people affected by BED show difficulties along the spectrum of impulsivity, including inhibitory control impairments and highlights the potential of novel treatment approaches directly targeting inhibitory control, including cognitive training approaches and non-invasive brain stimulation. METHODS ACCElect is a prospective, randomized controlled pilot trial investigating a novel, food-related inhibitory control training combined with transcranial direct current stimulation (tDCS). 40 patients with BED will be randomly assigned to receive the training either combined with verum or with sham stimulation (control condition). The inhibitory control training is based on principles of the antisaccade paradigm and comprises six training sessions over two weeks. Core aims are the investigation of feasibility and clinically relevant effects of a tDCS-enhanced inhibitory control training in BED patients and the establishment of a data basis for a larger efficacy trial. The primary clinical endpoint is binge-eating (BE) frequency in terms of changes in BE episodes four weeks after treatment termination as compared to baseline. Key secondary outcomes comprise ED pathology and general psychopathology, inhibitory control capacities, quality of life as well as acceptability and satisfaction with the intervention. DISCUSSION The results of the present trial will contribute to the development of novel neurobiologically informed treatment approaches for patients suffering from BED. Trial registration The ACCElect trial was prospectively registered on October 1, 2020, under the registration number NCT04572087 at ClinicalTrials.gov ( https://clinicaltrials.gov/ct2/show/NCT04572087 ).
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Affiliation(s)
- Katrin E Giel
- Department of Psychosomatic Medicine and Psychotherapy, Medical University Hospital Tübingen, Eberhard Karls University Tübingen, Osianderstr. 5, 72076, Tübingen, Germany. .,Center of Excellence for Eating Disorders, Tübingen, Germany.
| | - Kathrin Schag
- Department of Psychosomatic Medicine and Psychotherapy, Medical University Hospital Tübingen, Eberhard Karls University Tübingen, Osianderstr. 5, 72076, Tübingen, Germany.,Center of Excellence for Eating Disorders, Tübingen, Germany
| | - Peter Martus
- Institute for Clinical Epidemiology and Applied Biostatistics, Medical Faculty, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Sebastian M Max
- University Hospital of Psychiatry and Psychotherapy, Tübingen, Germany
| | - Christian Plewnia
- University Hospital of Psychiatry and Psychotherapy, Tübingen, Germany
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24
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Takahashi K, Yotsumoto Y. Testing the Reproducibility of the Effects of Transcranial Direct Current Stimulation: Failure to Modulate Beauty Perception by Brain Stimulation. Front Hum Neurosci 2022; 16:767344. [PMID: 35250512 PMCID: PMC8894197 DOI: 10.3389/fnhum.2022.767344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 01/27/2022] [Indexed: 11/23/2022] Open
Abstract
Transcranial direct current stimulation (tDCS) has been recognized as a promising tool for investigating the causal relationship between specific brain areas of interest and behavior. However, the reproducibility of previous tDCS studies is often questioned because of failures in replication. This study focused on the effects of tDCS on one cognitive domain: beauty perception. To date, the modulation of beauty perception by tDCS has been shown in two studies: Cattaneo et al. (2014) and Nakamura and Kawabata (2015). Here, we aimed at replicating their studies and investigating the effects of tDCS on beauty perception using the following parameters: (1) cathodal stimulation over the medial prefrontal cortex (mPFC) (Nakamura and Kawabata, 2015); (2) anodal stimulation over the left dorsolateral prefrontal cortex (lDLPFC) (Cattaneo et al., 2014). We also performed a more focal stimulation targeting the orbitofrontal cortex (OFC) to determine the optimal stimulation site for modulating beauty perception (3). Participants rated the subjectively-perceived beauty of the images before and after the tDCS administration. We divided images into four clusters according to the obtained scores in our preliminary study and examined changes in beauty ratings in each image cluster separately to exclude factors, such as stimuli attributions that may reduce tDCS effects. The results showed no strong effects of tDCS with the same parameters as in previous studies on beauty rating scores in any image cluster. Likewise, anodal stimulation over the OFC did not result in a change in rating scores. In contrast to previous studies, the current study did not corroborate the effects of tDCS on beauty perception. Our findings provide evidence regarding the recent reproducibility issue of tDCS effects and suggest the possible inflation of its effects on cognitive domains.
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Affiliation(s)
- Kuri Takahashi
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
- Department of Psychology and Neurosciences, Leibniz Research Center for Working Environment and Human Factors, Dortmund, Germany
- Department of Neuropsychology, Ruhr-Universität Bochum, Bochum, Germany
- *Correspondence: Kuri Takahashi,
| | - Yuko Yotsumoto
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
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25
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No effects of transcranial direct current stimulation on visual evoked potential and peak gamma frequency. Cogn Process 2022; 23:235-254. [PMID: 35099659 DOI: 10.1007/s10339-022-01076-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 01/12/2022] [Indexed: 11/03/2022]
Abstract
Evidence suggests that the visual evoked potential (VEP) and gamma oscillations elicited by visual stimuli reflect the balance of excitatory and inhibitory (E-I) cortical processes. As tDCS has been shown to modulate E-I balance, the current study investigated whether amplitudes of VEP components (N1 and P2) and peak gamma frequency are modulated by transcranial direct current stimulation (tDCS). Healthy adults underwent two electroencephalography (EEG) recordings while viewing stimuli designed to elicit a robust visual response. Between the two recordings, participants were randomly assigned to three tDCS conditions (anodal-, cathodal-, and sham-tDCS) or received no-tDCS. tDCS electrodes were placed over the occipital cortex (Oz) and the left cheek with an intensity of 2 mA for 10 min. Data of 39 participants were analysed for VEP amplitudes and peak gamma frequency using mixed-model ANOVAs. The results showed no main effects of tDCS in any metric. Possible explanations for the absence of tDCS effects are discussed.
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26
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Iddings JA, Zarkou A, Field-Fote EC. Noninvasive neuromodulation and rehabilitation to promote functional restoration in persons with spinal cord injury. Curr Opin Neurol 2021; 34:812-818. [PMID: 34766554 PMCID: PMC8597924 DOI: 10.1097/wco.0000000000000997] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW This review will focus on the use of clinically accessible neuromodulatory approaches for functional restoration in persons with spinal cord injury (SCI). RECENT FINDINGS Functional restoration is a primary rehabilitation priority for individuals with SCI. High-tech neuromodulatory modalities have been used in laboratory settings to improve hand and walking function as well as to reduce spasticity and pain in persons with SCI. However, the cost, limited accessibility, and required expertise are prohibitive for clinical applicability of these high-tech modalities. Recent literature indicates that noninvasive and clinically accessible approaches targeting supraspinal, spinal, and peripheral neural structures can modulate neural excitability. Although a limited number of studies have examined the use of these approaches for functional restoration and amelioration of secondary complications in SCI, early evidence investigating their efficacy when combined with training is encouraging. SUMMARY Larger sample studies addressing both biomarker identification and dosing are crucial next steps in the field of neurorehabilitation research before novel noninvasive stimulation approaches can be incorporated into standard clinical practice.
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Affiliation(s)
- Jennifer A Iddings
- Spinal Cord Injury Research Laboratory, Crawford Research Institute, Shepherd Center
| | - Anastasia Zarkou
- Spinal Cord Injury Research Laboratory, Crawford Research Institute, Shepherd Center
| | - Edelle C Field-Fote
- Spinal Cord Injury Research Laboratory, Crawford Research Institute, Shepherd Center
- Division of Physical Therapy, School of Medicine, Emory University
- Program in Applied Physiology, School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia, USA
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27
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Palmisano A, Bossi F, Barlabà C, Febbraio F, Loconte R, Lupo A, Nitsche MA, Rivolta D. Anodal tDCS effects over the left dorsolateral prefrontal cortex (L-DLPFC) on the rating of facial expression: evidence for a gender-specific effect. Heliyon 2021; 7:e08267. [PMID: 34765784 PMCID: PMC8571084 DOI: 10.1016/j.heliyon.2021.e08267] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/06/2021] [Accepted: 10/22/2021] [Indexed: 11/24/2022] Open
Abstract
The accurate recognition of others' facial expressions is a core skill for social interactions. The left Dorsolateral Prefrontal Cortex (L-DLPFC) represents a key node in the network for facial emotion recognition. However, its specific role is still under debate. As such, the aim of the current neuromodulation study was to assess the causal role of the L-DLPFC in humans' rating of facial expressions of emotions and implicit attitudes toward other races. In this sham-controlled single-blind between-subject experiment, we offline administered L-DLPFC transcranial direct current stimulation (tDCS) to 69 healthy participants who were divided into three groups of 23 (each receiving anodal 1 mA tDCS, anodal 2 mA tDCS, or Sham), before completing an "Emotion Rating task and two Implicit Association Tests (IATs). The former required the intensity rating of 192 faces (half black and half white) displaying happiness, sadness, anger, or fear. The IATs were designed to assess participants' automatic associations of positive or negative attributes with racial contents. Results on the Emotion Rating task showed participants' gender-specific effect of tDCS. Specifically, a gender bias, with only males showing a tendency to underestimate negative emotions was found in Sham, and absent in the tDCS groups. When considering the race of the stimuli, females but not males in Sham exhibited a racial bias, that is, the tendency to overestimate negative emotions of other-race faces. Again, the bias disappeared in the tDCS groups. Concerning the IATs, no significant effects emerged. We conclude that the L-DLPFC plays a critical role in humans' rating of facial expressions, and for variability in other-race emotional judgements. These results shed light on the neural bases of the human emotional system and its gender-related differences, and have potential implications for interventional settings.
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Affiliation(s)
- Annalisa Palmisano
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | | | - Cecilia Barlabà
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Febbraio
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Riccardo Loconte
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Antonella Lupo
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
| | - Michael A. Nitsche
- Department of Psychology and Neurosciences, Leibniz Research Center for Working Environment and Human Factors (IfADo), Dortmund, Germany
- Department of Neurology, University Medical Hospital Bergmannsheil, Bochum, Germany
| | - Davide Rivolta
- Department of Education, Psychology, and Communication, University of Bari Aldo Moro, Bari, Italy
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28
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Veldema J, Gharabaghi A, Jansen P. Non-invasive brain stimulation in modulation of mental rotation ability: A systematic review and meta-analysis. Eur J Neurosci 2021; 54:7493-7512. [PMID: 34651358 DOI: 10.1111/ejn.15490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 08/10/2021] [Accepted: 10/08/2021] [Indexed: 12/18/2022]
Abstract
Mental rotation, the ability to manipulate mental images, is an important function in human cognition. This systematic review and meta-analysis investigates the potential of non-invasive brain stimulation in modulation of this component of visuo-spatial perception. The PubMed database was reviewed prior to 31 September 2020 on randomized controlled trials investigating the effects of repetitive transcranial magnetic stimulation (rTMS), transcranial direct current stimulation (tDCS), and transcranial alternating current stimulation (tACS) on the mental rotation ability in healthy persons. A total of 17 studies (including 485 subjects) matched our inclusion criteria. Within their scope, overall, 46 sham-controlled experiments were performed. Methodology and results of each experiment are presented in a meta-analysis. The data show a large variety of methods and effects. The influence of (1) stimulation-technique (tDCS, tACS, and rTMS), (2) stimulation protocol (anodal, cathodal, bilateral tDCS, tACS, high-frequency rTMS, low-frequency rTMS, paired pulse rTMS, and theta burst stimulation), (3) stimulation timing (preconditioning and simultaneous), (4) stimulation location (left, right hemisphere, frontal, and parietal area), and (5) stimulus type (bodily and non-bodily) is discussed. The data indicate a beneficial effect of anodal tDCS and of tACS and no effect of cathodal tDCS on the mental rotation ability. Bilateral tDCS protocols both improved and worsened the parameters assessed. The small effect sizes obtained in mostly rTMS experiments require cautious interpretation.
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Affiliation(s)
- Jitka Veldema
- Institute for Neuromodulation and Neurotechnology, University Hospital and University of Tübingen, Tübingen, Germany
| | - Alireza Gharabaghi
- Institute for Neuromodulation and Neurotechnology, University Hospital and University of Tübingen, Tübingen, Germany
| | - Petra Jansen
- Faculty of Human Science, University of Regensburg, Regensburg, Germany
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29
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Schlatter S, Guillot A, Schmidt L, Mura M, Trama R, Di Rienzo F, Lilot M, Debarnot U. Combining proactive transcranial stimulation and cardiac biofeedback to substantially manage harmful stress effects. Brain Stimul 2021; 14:1384-1392. [PMID: 34438047 DOI: 10.1016/j.brs.2021.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/18/2021] [Accepted: 08/21/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Previous studies have identified the dorsolateral prefrontal cortex (dlPFC) as a core region in cognitive emotional regulation. Transcranial direct current stimulations of the dlPFC (tDCS) and heart-rate variability biofeedback (BFB) are known to regulate emotional processes. However, the effect of these interventions applied either alone or concomitantly during an anticipatory stress remains unexplored. OBJECTIVE The study investigated the effect of anodal tDCS and BFB, alone or combined, on psychophysiological stress responses and cognitive functioning. METHODS Following a stress anticipation induction, 80 participants were randomized into four groups and subjected to a 15-min intervention: neutral video viewing (ctrl), left dlPFC anodal tDCS (tdcs), heart-rate variability biofeedback (bfb), or a combined treatment (bfb + tdcs). Participants were then immediately confronted with the stressor, which was followed by an assessment of executive functions. Psychophysiological stress responses were assessed throughout the experiment (heart rate, heart-rate variability, salivary cortisol). RESULTS The tdcs did not modulate stress responses. Compared with both ctrl and tdcs interventions, bfb reduced physiological stress and improved executive functions after the stressor. The main finding revealed that bfb + tdcs was the most effective intervention, yielding greater reduction in psychological and physiological stress responses than bfb. CONCLUSIONS Combining preventive tDCS with BFB is a relevant interventional approach to reduce psychophysiological stress responses, hence offering a new and non-invasive treatment of stress-related disorders. Biofeedback may be particularly useful for preparing for an important stressful event when performance is decisive.
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Affiliation(s)
- Sophie Schlatter
- Inter-University Laboratory of Human Movement Biology-EA 7424, University of Lyon, University Claude Bernard Lyon 1, 69 622, Villeurbanne, France; Centre Lyonnais d'Enseignement par Simulation en Santé (CLESS, high fidelity medical simulation centre), SAMSEI, Lyon, France.
| | - Aymeric Guillot
- Inter-University Laboratory of Human Movement Biology-EA 7424, University of Lyon, University Claude Bernard Lyon 1, 69 622, Villeurbanne, France.
| | - Laura Schmidt
- Université Claude Bernard Lyon 1, Research on Healthcare Performance (RESHAPE), INSERM U1290, Lyon, France; Centre Lyonnais d'Enseignement par Simulation en Santé (CLESS, high fidelity medical simulation centre), SAMSEI, Lyon, France.
| | - Mathilde Mura
- Inter-University Laboratory of Human Movement Biology-EA 7424, University of Lyon, University Claude Bernard Lyon 1, 69 622, Villeurbanne, France.
| | - Robin Trama
- Inter-University Laboratory of Human Movement Biology-EA 7424, University of Lyon, University Claude Bernard Lyon 1, 69 622, Villeurbanne, France.
| | - Franck Di Rienzo
- Inter-University Laboratory of Human Movement Biology-EA 7424, University of Lyon, University Claude Bernard Lyon 1, 69 622, Villeurbanne, France.
| | - Marc Lilot
- Université Claude Bernard Lyon 1, Research on Healthcare Performance (RESHAPE), INSERM U1290, Lyon, France; Hospices Civils de Lyon, Departments of Anaesthesia and Intensive Care, University Claude Bernard Lyon 1, Lyon, France; Centre Lyonnais d'Enseignement par Simulation en Santé (CLESS, high fidelity medical simulation centre), SAMSEI, Lyon, France.
| | - Ursula Debarnot
- Inter-University Laboratory of Human Movement Biology-EA 7424, University of Lyon, University Claude Bernard Lyon 1, 69 622, Villeurbanne, France; Institut Universitaire de France, France.
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30
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Schmicker M, Menze I, Schneider C, Taubert M, Zaehle T, Mueller NG. Making the rich richer: Frontoparietal tDCS enhances transfer effects of a single-session distractor inhibition training on working memory in high capacity individuals but reduces them in low capacity individuals. Neuroimage 2021; 242:118438. [PMID: 34332042 DOI: 10.1016/j.neuroimage.2021.118438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/07/2021] [Accepted: 07/28/2021] [Indexed: 10/20/2022] Open
Abstract
Working memory (WM) performance depends on the ability to extract relevant while inhibiting irrelevant information from entering the WM storage. This distractor inhibition ability can be trained and is known to induce transfer effects on WM performance. Here we asked whether transfer on WM can be boosted by transcranial direct current stimulation (tDCS) during a single-session distractor inhibition training. As WM performance is ascribed to the frontoparietal network, in which prefrontal areas are associated with inhibiting distractors and posterior parietal areas with storing information, we placed the anode over the prefrontal and the cathode over the posterior parietal cortex during a single-session distractor inhibition training. This network-oriented stimulation protocol should enhance inhibition processes by shifting the neural activity from posterior to prefrontal regions. WM improved after a single-session distractor inhibition training under verum stimulation but only in subjects with a high WM capacity. In subjects with a low WM capacity, verum tDCS reduced the transfer effects on WM. We assume tDCS to strengthen the frontostriatal pathway in individuals with a high WM capacity leading to efficient inhibition of distractors. In contrast, the cathodal stimulation of the posterior parietal cortex might have hindered usual compensational mechanism in low capacity subjects, i.e. maintaining also irrelevant information in memory. Our results thus stress the need to adjust tDCS protocols to well-founded knowledge about neural networks and individual cognitive differences.
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Affiliation(s)
- Marlen Schmicker
- Neuroprotection Lab, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.
| | - Inga Menze
- Neuroprotection Lab, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Christine Schneider
- Neuroprotection Lab, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
| | - Marco Taubert
- Chair for Training Science, Faculty for Humanities, Otto-von-Guericke University, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Tino Zaehle
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Notger G Mueller
- Neuroprotection Lab, German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
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31
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Gonzalez PC, Fong KNK, Brown T. Transcranial direct current stimulation as an adjunct to cognitive training for older adults with mild cognitive impairment: A randomized controlled trial. Ann Phys Rehabil Med 2021; 64:101536. [PMID: 33957292 DOI: 10.1016/j.rehab.2021.101536] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 12/20/2020] [Accepted: 12/27/2020] [Indexed: 10/20/2022]
Abstract
BACKGROUND Cognitive training (CT) for individuals with mild cognitive impairment (MCI) may not be optimal for enhancing cognitive functioning. Coupling CT with transcranial direct current stimulation (tDCS) may maximize the strength of transmission across synaptic circuits in pathways that are stimulated by CT. The synergistic effects arising from this combination could be superior to those with administration of CT alone. OBJECTIVES To investigate whether the receiving tDCS combined with CT is superior to CT alone on domain-specific and task-specific cognitive outcomes in older adults with MCI. METHODS This double-blind, sham-controlled randomized trial included 67 older adults with MCI assigned to 3 groups: 1) tDCS combined with CT (tDCS+CT), 2) sham tDCS combined with CT (sham tDCS+CT) and 3) CT alone. Nine sessions of computerized CT were administered to the 3 groups for 3 weeks. In addition, tDCS and sham tDCS was delivered to the left dorsolateral prefrontal cortex to the tDCS+CT and sham tDCS+CT groups, respectively, simultaneously with CT. Standardized cognitive assessments were performed at baseline, post-intervention, and at 6-week follow-up. Participants' performance in the CT tasks was rated every session. RESULTS The 3 groups showed improvements in global cognition and everyday memory (P<0.017) after the intervention and at follow-up, with larger effect sizes in the tDCS+CT than other groups (d>0.94) but with no significant differences between groups. Regarding CT outcomes, the groups showed significant differences in favour of the tDCS+CT group in decreasing the completion and reaction times of working memory and attention activities (P<0.017). CONCLUSIONS tDCS combined with CT was not superior to sham tDCS with CT and CT alone in its effects on domain-specific cognitive outcomes, but it did provide comparatively larger effect sizes and improve the processing speed of task-specific outcomes. CLINICALTRIALS.GOV: NCT03441152.
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Affiliation(s)
- Pablo Cruz Gonzalez
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR
| | - Kenneth N K Fong
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR.
| | - Ted Brown
- Department of Occupational Therapy, Monash University-Peninsula Campus, Frankston, 3199 Victoria, Australia
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Cai G, Xia Z, Charvet L, Xiao F, Datta A, Androulakis XM. A Systematic Review and Meta-Analysis on the Efficacy of Repeated Transcranial Direct Current Stimulation for Migraine. J Pain Res 2021; 14:1171-1183. [PMID: 33953607 PMCID: PMC8090858 DOI: 10.2147/jpr.s295704] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/05/2021] [Indexed: 01/03/2023] Open
Abstract
Purpose Transcranial direct current stimulation (tDCS) may have therapeutic potential in the management of migraine. However, studies to date have yielded conflicting results. We reviewed studies using repeated tDCS for longer than 4 weeks in migraine treatment, and performed meta-analysis on the efficacy of tDCS in migraine. Methods In this meta-analysis, we included the common outcome measurements reported across randomized controlled trials (RCTs). Subgroup analysis was performed at different post-treatment endpoints, and with different stimulation intensities and polarities. Results Five RCTs were included in the quantitative meta-analysis with a total of 104 migraine patients. We found a significant reduction of migraine pain intensity (MD: −1.44; CI: [−2.13, −0.76]) in active vs sham tDCS treated patients. Within active treatment groups, pain intensity and duration were significantly improved from baseline after tDCS treatment (intensity MD: −1.86; CI: [−3.30, −0.43]; duration MD: −4.42; CI: [−8.11, −0.74]) and during a follow-up period (intensity MD: −1.52; CI: [−1.84, −1.20]; duration MD: −1.94; CI: [−3.10, −0.77]). There was a significant reduction of pain intensity by both anodal (MD: −1.74; CI: [−2.80, −0.68]) and cathodal (MD: −1.49; CI: [−1.89, −1.09]) stimulation conditions. Conclusion tDCS treatment repeated over days for a period of 4 weeks or more is effective in reducing migraine pain intensity and duration of migraine episode. The benefit of tDCS can persist for at least 4 weeks after the completion of last tDCS session. Both anodal and cathodal stimulation are effective for reducing migraine pain intensity.
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Affiliation(s)
- Guoshuai Cai
- Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, SC, 29208, USA
| | - Zhu Xia
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Leigh Charvet
- Department of Neurology, NYU Grossman School of Medicine, New York City, NY, USA
| | - Feifei Xiao
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, 29208, USA
| | - Abhishek Datta
- Research and Development, Soterix Medical, New York, NY, USA.,Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - X Michelle Androulakis
- Neurology, Columbia VA Health System, Columbia, SC, USA.,School of Medicine, University of South Carolina, Columbia, SC, USA
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fMRI and transcranial electrical stimulation (tES): A systematic review of parameter space and outcomes. Prog Neuropsychopharmacol Biol Psychiatry 2021; 107:110149. [PMID: 33096158 DOI: 10.1016/j.pnpbp.2020.110149] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/12/2020] [Accepted: 10/17/2020] [Indexed: 12/12/2022]
Abstract
The combination of non-invasive brain stimulation interventions with human brain mapping methods have supported research beyond correlational associations between brain activity and behavior. Functional MRI (fMRI) partnered with transcranial electrical stimulation (tES) methods, i.e., transcranial direct current (tDCS), transcranial alternating current (tACS), and transcranial random noise (tRNS) stimulation, explore the neuromodulatory effects of tES in the targeted brain regions and their interconnected networks and provide opportunities for individualized interventions. Advances in the field of tES-fMRI can be hampered by the methodological variability between studies that confounds comparability/replicability. In order to explore variability in the tES-fMRI methodological parameter space (MPS), we conducted a systematic review of 222 tES-fMRI experiments (181 tDCS, 39 tACS and 2 tRNS) published before February 1, 2019, and suggested a framework to systematically report main elements of MPS across studies. Publications dedicated to tRNS-fMRI were not considered in this systematic review. We have organized main findings in terms of fMRI modulation by tES. tES modulates activation and connectivity beyond the stimulated areas particularly with prefrontal stimulation. There were no two studies with the same MPS to replicate findings. We discuss how to harmonize the MPS to promote replication in future studies.
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Amani A, Yousefian M, Seyedarabi H, Farhoudi M. Effect of triangular electrode schemes on Broca's cortical stimulation: conventional and HD-tDCS study. Med Biol Eng Comput 2021; 59:913-924. [PMID: 33786697 DOI: 10.1007/s11517-021-02338-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 02/12/2021] [Indexed: 11/29/2022]
Abstract
Transcranial direct current stimulation (tDCS) is a therapeutic and complementary treatment in several cognitive diseases, psychiatric disorders, and disabilities that occur due to an accident or stroke. In the current research, we aimed to boost some parts of the stimulation structure and proposed a new electrode scheme in the mentioned approach. After segmenting magnetic resonance imaging (MRI) scans and using a tissue correction routine algorithm, we attempted to create an appropriate head model and electrode placement according to electric stimulation, whereby we completed tDCS processing. The considered electrodes are divided into two general categories. All the considered electrodes consist of rectangular, circular, triangular, and empty triangular patches with specific dimensions. We investigated common electrode schemes and introduced better electrode schemes for more effective cortical stimulation. We observed that the triangular electrodes in the conventional and anodal arrangement in the triangular 4 × 1 HD-tDCS create more electric field than others. Also, we calculated the current density and attempted to substantially improve it. Therefore, we recommended the empty triangular schemes. We investigated the designed model thoroughly and observed that it increased the current density not only in the conventional but also in the HD-tDCS. Graphical abstract.
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Affiliation(s)
- Ali Amani
- Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
| | - Maryam Yousefian
- Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
| | - Hadi Seyedarabi
- Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran.
| | - Mehdi Farhoudi
- Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran
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Objective electrophysiological fatigability markers and their modulation through tDCS. Clin Neurophysiol 2021; 132:1721-1732. [PMID: 33867262 DOI: 10.1016/j.clinph.2021.02.391] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/28/2021] [Accepted: 02/05/2021] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Cognitive fatigability is a frequent symptom after sustained performance. Fatigability is evident in healthy subjects but is also often comorbid in several neuropsychiatric diseases. However, to date, clinical diagnostic almost solely relies on the self-reported subjective experience of fatigue. The goals of this present study were i) to complement the purely subjective fatigue diagnostic with objective electrophysiological fatigability parameters and ii) to prove the potential therapeutic application of transcranial direct current stimulation (tDCS) as a fatigability intervention. METHODS We performed a pseudo-randomized, sham-controlled, parallel-group trial. Forty healthy participants received either anodal or sham tDCS over the left dorsolateral prefrontal cortex (DLPFC) while they performed an exhaustive cognitive task to induce cognitive fatigability. To assess fatigability changes, we analyzed variations of prepulse inhibition (PPI) and P50 suppression as well as frontomedial theta and occipital alpha power with time-on-task. RESULTS The task reliably induced subjective exhaustion in all participants. Furthermore, we confirmed fatigability-related increases in frontomedial theta and occipital alpha power throughout the task. Additionally, fatigability significantly reduced PPI as well as P50 sensory gating. Anodal tDCS over the left DLPFC successfully counteracted fatigability and reduced the fatigability-related increase in alpha power as well as the decline in both gating parameters. CONCLUSION Occipital alpha and sensorimotor/sensory gating are suitable parameters to assess the severity of fatigability objectively. Anodal tDCS can counteract fatigability and has therapeutic potential for the treatment of fatigability in neuropsychiatric diseases. SIGNIFICANCE Fatigability can be objectively assessed by electrophysiological measures and attenuated by tDCS.
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Chan MMY, Yau SSY, Han YMY. The neurobiology of prefrontal transcranial direct current stimulation (tDCS) in promoting brain plasticity: A systematic review and meta-analyses of human and rodent studies. Neurosci Biobehav Rev 2021; 125:392-416. [PMID: 33662444 DOI: 10.1016/j.neubiorev.2021.02.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/05/2021] [Accepted: 02/23/2021] [Indexed: 12/13/2022]
Abstract
The neurobiological mechanisms underlying prefrontal transcranial direct current stimulation (tDCS) remain elusive. Randomized, sham-controlled trials in humans and rodents applying in vivo prefrontal tDCS were included to explore whether prefrontal tDCS modulates resting-state and event-related functional connectivity, neural oscillation and synaptic plasticity. Fifty studies were included in the systematic review and 32 in the meta-analyses. Neuroimaging meta-analysis indicated anodal prefrontal tDCS significantly enhanced bilateral median cingulate activity [familywise error (FWE)-corrected p < .005]; meta-regression revealed a positive relationship between changes in median cingulate activity after tDCS and current density (FWE-corrected p < .005) as well as electric current strength (FWE-corrected p < .05). Meta-analyses of electroencephalography and magnetoencephalography data revealed nonsignificant changes (ps > .1) in both resting-state and event-related oscillatory power across all frequency bands. Applying anodal tDCS over the rodent hippocampus/prefrontal cortex enhanced long-term potentiation and brain-derived neurotrophic factor expression in the stimulated brain regions (ps <.005). Evidence supporting prefrontal tDCS administration is preliminary; more methodologically consistent studies evaluating its effects on cognitive function that include brain activity measurements are needed.
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Affiliation(s)
- Melody M Y Chan
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Sonata S Y Yau
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Yvonne M Y Han
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China.
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Max SM, Plewnia C, Zipfel S, Giel KE, Schag K. Combined antisaccade task and transcranial direct current stimulation to increase response inhibition in binge eating disorder. Eur Arch Psychiatry Clin Neurosci 2021; 271:17-28. [PMID: 32661703 PMCID: PMC7867531 DOI: 10.1007/s00406-020-01164-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 07/02/2020] [Indexed: 01/04/2023]
Abstract
Binge eating disorder (BED) is associated with deficient response inhibition. Malfunctioning response inhibition is linked to hypoactivation of the dorsolateral prefrontal cortex (dlPFC), where excitability could be increased by anodal transcranial direct current stimulation (tDCS). Response inhibition can be assessed using an antisaccade task which requires supressing a dominant response (i.e. saccade) towards a newly appearing picture in the visual field. We performed a double-blind, randomised, placebo-controlled proof-of-concept-study in which we combined a food-modified antisaccade task with tDCS in people with BED. We expected task learning and modulatory tDCS effects. Sixteen people were allocated to a 1 mA condition, 15 people to a 2 mA condition. Each participant underwent the food-modified antisaccade task at three measurement points: baseline without stimulation, anodal verum and sham stimulation at the right dlPFC in a crossover design. The error rate and the latencies of correct antisaccades decreased over time. No tDCS effect on the error rate could be observed. Compared to sham stimulation, 2 mA tDCS decreased the latencies of correct antisaccades, whereas 1 mA tDCS increased it. Self-reported binge eating episodes were reduced in the 2 mA condition, while there was no change in the 1 mA condition. Participants demonstrated increased response inhibition capacities by a task learning effect concerning the error rate and latencies of correct antisaccades over time as well as a nonlinear tDCS effect represented by ameliorated latencies in the 2 mA and impaired latencies in the 1 mA condition. The reduction of binge eating episodes might indicate a transfer effect to everyday life. Given that the reduction in binge eating was observed before tDCS administration, this effect could not be the result of neuromodulation. Randomized clinical trials are needed to fully understand this reduction, and to explore the efficacy of a combined antisaccade and tDCS training for BED.
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Affiliation(s)
- Sebastian M Max
- Department of Psychiatry and Psychotherapy, Neurophysiology and Interventional Neuropsychiatry, University of Tübingen, Calwerstraße 14, 72076, Tübingen, Germany
| | - Christian Plewnia
- Department of Psychiatry and Psychotherapy, Neurophysiology and Interventional Neuropsychiatry, University of Tübingen, Calwerstraße 14, 72076, Tübingen, Germany.
| | - Stephan Zipfel
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Osianderstraße 5, 72076, Tübingen, Germany
- Competence Center for Eating Disorders Tübingen (KOMET), Tübingen, Germany
| | - Katrin E Giel
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Osianderstraße 5, 72076, Tübingen, Germany
- Competence Center for Eating Disorders Tübingen (KOMET), Tübingen, Germany
| | - Kathrin Schag
- Department of Psychosomatic Medicine and Psychotherapy, University Hospital Tübingen, Osianderstraße 5, 72076, Tübingen, Germany
- Competence Center for Eating Disorders Tübingen (KOMET), Tübingen, Germany
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38
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Gupta T, Mittal VA. Transcranial direct current stimulation and emotion processing deficits in psychosis and depression. Eur Arch Psychiatry Clin Neurosci 2021; 271:69-84. [PMID: 32488523 PMCID: PMC7704557 DOI: 10.1007/s00406-020-01146-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/23/2020] [Indexed: 01/11/2023]
Abstract
Emotional processing deficits (EPDs) are commonly observed among individuals diagnosed with (1) psychotic disorders (2) and depression. Given that EPDs can impact overall functioning and quality of life, the need to identify effective interventions is critical. To date, our current understanding of treatments for these impairments is limited. However, there is increasing interest in investigating the efficacy of transcranial direct current stimulation (tDCS). This neuromodulation technique releases a weak electrical current through the brain. Given research suggesting promise for using tDCS to improve symptoms and cognition across psychopathology, this approach may be useful for improving EPDs and related symptoms in psychosis and depression. In the current review, we provide an overview of the literature determining the effects of tDCS for EPDs and related symptoms in these groups. Furthermore, we highlight methodological advances and pinpoint potential future directions.
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Affiliation(s)
- Tina Gupta
- Department of Psychology, Northwestern University, 2029 Sheridan Road, Evanston, IL, 60208, USA.
| | - Vijay A Mittal
- Department of Psychology, Northwestern University, 2029 Sheridan Road, Evanston, IL, 60208, USA
- Department of Psychiatry, Northwestern University, Chicago, IL, USA
- Institute for Policy Research, Northwestern University, Evanston, IL, USA
- Department of Medical Social Sciences, Northwestern University, Chicago, IL, USA
- Institute for Innovations in Developmental Sciences, Northwestern University, Chicago, IL, USA
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Soleimani G, Saviz M, Bikson M, Towhidkhah F, Kuplicki R, Paulus MP, Ekhtiari H. Group and individual level variations between symmetric and asymmetric DLPFC montages for tDCS over large scale brain network nodes. Sci Rep 2021; 11:1271. [PMID: 33446802 PMCID: PMC7809198 DOI: 10.1038/s41598-020-80279-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 12/14/2020] [Indexed: 01/29/2023] Open
Abstract
Two challenges to optimizing transcranial direct current stimulation (tDCS) are selecting between, often similar, electrode montages and accounting for inter-individual differences in response. These two factors are related by how tDCS montage determines current flow through the brain considered across or within individuals. MRI-based computational head models (CHMs) predict how brain anatomy determines electric field (EF) patterns for a given tDCS montage. Because conventional tDCS produces diffuse brain current flow, stimulation outcomes may be understood as modulation of global networks. Therefore, we developed a network-led, rather than region-led, approach. We specifically considered two common "frontal" tDCS montages that nominally target the dorsolateral prefrontal cortex; asymmetric "unilateral" (anode/cathode: F4/Fp1) and symmetric "bilateral" (F4/F3) electrode montages. CHMs of 66 participants were constructed. We showed that cathode location significantly affects EFs in the limbic network. Furthermore, using a finer parcellation of large-scale networks, we found significant differences in some of the main nodes within a network, even if there is no difference at the network level. This study generally demonstrates a methodology for considering the components of large-scale networks in CHMs instead of targeting a single region and specifically provides insight into how symmetric vs asymmetric frontal tDCS may differentially modulate networks across a population.
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Affiliation(s)
- Ghazaleh Soleimani
- Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Mehrdad Saviz
- Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.
| | - Marom Bikson
- Department of Biomedical Engineering, City College of New York of CUNY, New York, NY, USA
| | - Farzad Towhidkhah
- Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Rayus Kuplicki
- Laureate Institute for Brain Research (LIBR), Tulsa, OK, USA
| | - Martin P Paulus
- Laureate Institute for Brain Research (LIBR), Tulsa, OK, USA
| | - Hamed Ekhtiari
- Laureate Institute for Brain Research (LIBR), Tulsa, OK, USA
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Veldema J, Engelhardt A, Jansen P. Does anodal tDCS improve basketball performance? A randomized controlled trial. Eur J Sport Sci 2021; 22:126-135. [PMID: 33297843 DOI: 10.1080/17461391.2020.1862306] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Shooting precision as well as dribbling and agility are crucial components of performance in basketball. We examined the effects of anodal tDCS over the dominant primary motor cortex in supporting these basketball specific abilities. Fifty-two sports students were enrolled in a double-blind, randomized, placebo-controlled, crossover trial with two interventions. Twenty minutes of anodal 1 mA tDCS/sham tDCS were applied over the primary motor cortex of the dominant hemisphere. Basketball shooting precision (basketball shooting accuracy test) and basketball specific dribbling and agility (Illinois ball-dribbling test) were tested prior and after each intervention. Basketball shooting precision and basketball specific dribbling and agility improved after real tDCS but not after sham tDCS. ANOVAs show significant intervention*time effects on both the shooting accuracy test (F1,51 = 5.6; P = 0.022) and on the Illinois ball-dribbling test (F1,51 = 4.5; P = 0.038). Anodal 1 mA tDCS over the dominant primary motor cortex is effective in supporting short-term performance in basketball. However, the available data is insufficient for application of this novel method within the framework of conventional sports training.
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Affiliation(s)
- Jitka Veldema
- Faculty of Human Sciences, University of Regensburg, Regensburg, Germany
| | - Arne Engelhardt
- Faculty of Human Sciences, University of Regensburg, Regensburg, Germany
| | - Petra Jansen
- Faculty of Human Sciences, University of Regensburg, Regensburg, Germany
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41
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Effects of Transcranial Direct Current Stimulation (tDCS) in the Normalization of Brain Activation in Patients with Neuropsychiatric Disorders: A Systematic Review of Neurophysiological and Neuroimaging Studies. Neural Plast 2020; 2020:8854412. [PMID: 33424961 PMCID: PMC7773462 DOI: 10.1155/2020/8854412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 11/23/2020] [Accepted: 12/03/2020] [Indexed: 11/17/2022] Open
Abstract
Background People with neuropsychiatric disorders have been found to have abnormal brain activity, which is associated with the persistent functional impairment found in these patients. Recently, transcranial direct current stimulation (tDCS) has been shown to normalize this pathological brain activity, although the results are inconsistent. Objective We explored whether tDCS alters and normalizes brain activity among patients with neuropsychiatric disorders. Moreover, we examined whether these changes in brain activity are clinically relevant, as evidenced by brain-behavior correlations. Methods A systematic review was conducted according to PRISMA guidelines. Randomized controlled trials that studied the effects of tDCS on brain activity by comparing experimental and sham control groups using either electrophysiological or neuroimaging methods were included. Results With convergent evidence from 16 neurophysiological/neuroimaging studies, active tDCS was shown to be able to induce changes in brain activation patterns in people with neuropsychiatric disorders. Importantly, anodal tDCS appeared to normalize aberrant brain activation in patients with schizophrenia and substance abuse, and the effect was selectively correlated with reaction times, task-specific accuracy performance, and some symptom severity measures. Limitations and Conclusions. Due to the inherent heterogeneity in brain activity measurements for tDCS studies among people with neuropsychiatric disorders, no meta-analysis was conducted. We recommend that future studies investigate the effect of repeated cathodal tDCS on brain activity. We suggest to clinicians that the prescription of 1-2 mA anodal stimulation for patients with schizophrenia may be a promising treatment to alleviate positive symptoms. This systematic review is registered with registration number CRD42020183608.
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42
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Chan MMY, Han YMY. The Effect of Transcranial Direct Current Stimulation in Changing Resting-State Functional Connectivity in Patients With Neurological Disorders: A Systematic Review. J Cent Nerv Syst Dis 2020; 12:1179573520976832. [PMID: 33402860 PMCID: PMC7745554 DOI: 10.1177/1179573520976832] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 11/03/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND People with neurological disorders are found to have abnormal resting-state functional connectivity (rsFC), which is associated with the persistent functional impairment found in these patients. Recently, transcranial direct current stimulation (tDCS) has been shown to improve rsFC, although the results are inconsistent. OBJECTIVE We hope to explore whether tDCS induces rsFC changes among patients with neurological disorders, whether rsFC is clinically relevant and how different tDCS parameters affect rsFC outcome among these individuals. METHODS A systematic review was conducted according to PRISMA guidelines (systematic review registration number: CRD42020168654). Randomized controlled trials that studied the tDCS effects on rsFC between the experimental and sham-controlled groups using either electrophysiological or neuroimaging methods were included. RESULTS Active tDCS can induce changes in both localized (ie, brain regions under the transcranial electrodes) and diffused (ie, brain regions not directly influenced by the transcranial electrodes) rsFC. Interestingly, fMRI studies showed that the default mode network was enhanced regardless of patients' diagnoses, the stimulation paradigms used or the rsFC analytical methods employed. Second, stimulation intensity, but not total stimulation time, appeared to positively influence the effect of tDCS on rsFC. LIMITATIONS AND CONCLUSION Due to the inherent heterogeneity in rsFC analytical methods and tDCS protocols, meta-analysis was not conducted. We recommend that future studies may investigate the effect of tDCS on rsFC for repeated cathodal stimulation. For clinicians, we suggest anodal stimulation at a higher stimulation intensity within the safety limit may maximize tDCS effects in modulating aberrant functional connectivity of patients with neurological disorders.
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Affiliation(s)
- Melody MY Chan
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China
| | - Yvonne MY Han
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China
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43
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Pyke W, Vostanis A, Javadi AH. Electrical Brain Stimulation During a Retrieval-Based Learning Task Can Impair Long-Term Memory. JOURNAL OF COGNITIVE ENHANCEMENT 2020. [DOI: 10.1007/s41465-020-00200-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractAnodal transcranial direct current stimulation (tDCS) to the left dorsolateral prefrontal cortex (DLPFC) has been shown to improve performance on a multitude of cognitive tasks. These are, however, often simple tasks, testing only one cognitive domain at a time. Therefore, the efficacy of brain stimulation for complex tasks has yet to be understood. Using a task designed to increase learning efficiency, this study investigates whether anodal tDCS over the left DLPFC can modulate both learning ability and subsequent long-term memory retention. Using a within-subject design, participants (N = 25) took part in 6 training sessions over consecutive days in which active or sham stimulation was administered randomly (3 of each). A computer-based task was used, containing flags from countries unknown to the participants. Each training session consisted of the repetition of 8 pairs of flag/country names. Subsequently, in three testing sessions, free, cued, and timed cued recall, participants were assessed on all 48 flags they had learnt. No difference in learning speed between active and sham tDCS was found. Furthermore, in the timed cued recall phase, flags learnt in the sham tDCS sessions were recalled significantly better than flags learnt in the active tDCS sessions. This effect was stronger in the second testing session. It was also found that for the flags answered incorrectly; thus, meaning they were presented more frequently, subsequent long-term retention was improved. These results suggest that for a complex task, anodal tDCS is ineffective at improving learning speed and potentially detrimental to long-term retention when employed during encoding. This serves to highlight the complex nature of brain stimulation, providing a greater understanding of its limitations and drawbacks.
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Solomons CD, Shanmugasundaram V. Transcranial direct current stimulation: A review of electrode characteristics and materials. Med Eng Phys 2020; 85:63-74. [PMID: 33081965 DOI: 10.1016/j.medengphy.2020.09.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 09/10/2020] [Accepted: 09/25/2020] [Indexed: 12/15/2022]
Abstract
Electrode characteristics are crucial in transcranial direct current stimulation (tDCS) since electrode design and placement determine the cortical area being modulated, current density and spatial resolution of stimulation. Early research on tDCS sought to determine optimal parameters for stimulation by specifying maximum current, duration and sizes of electrodes. Further research focused on determining efficient ways to deliver stimulation to targeted regions on the cortex with minimal discomfort to the user by altering electrode size, placement, shape and material. This review aims to give an insight on the main characteristics of electrodes used in tDCS and on the variability found in electrode parameters and placements from tDCS to high definition tDCS (HD-tDCS) applications and beyond.
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Affiliation(s)
- Cassandra D Solomons
- School of Electrical Engineering, Vellore Institute of Technology, Vellore 632014, India
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45
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Effects of transcranial direct current stimulation of left and right inferior frontal gyrus on creative divergent thinking are moderated by changes in inhibition control. Brain Struct Funct 2020; 225:1691-1704. [PMID: 32556475 PMCID: PMC7321900 DOI: 10.1007/s00429-020-02081-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 05/04/2020] [Indexed: 11/16/2022]
Abstract
Divergent thinking (DT) as one component of creativity is the ability to search for multiple solutions to a single problem and is reliably tested with the Alternative Uses Task (AUT). DT depends on activity in the inferior frontal gyrus (IFG), a prefrontal region that has also been associated with inhibitory control (IC). Experimentally manipulating IC through transcranial direct current stimulation (tDCS) led to alterations in DT. Here, we aimed at further examining such potential mediating effects of IC on DT (measured as flexibility, fluency, and originality in the AUT) by modulating IC tDCS. Participants received either cathodal tDCS (c-tDCS) of the left IFG coupled with anodal tDCS (a-tDCS) of the right IFG (L−R + ; N = 19), or the opposite treatment (L + R−; N = 21). We hypothesized that L + R− stimulation would enhance IC assessed with the Go NoGo task (GNGT), and that facilitated IC would result in lower creativity scores. The reversed stimulation arrangement (i.e., L− R +) should result in higher creativity scores. We found that tDCS only affected the originality component of the AUT but not flexibility or fluency. We also found no effects on IC, and thus, the mediation effect of IC could not be confirmed. However, we observed a moderation effect: inhibition of left and facilitation of right IFG (L−R +) resulted in enhanced flexibility and originality scores, only when IC performance was also improved. We conclude that inducing a right-to-left gradient in IFG activity by tDCS is efficient in enhancing DT, but only under conditions where tDCS is sufficient to alter IC performance as well.
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Lopes JBP, Miziara IM, Galli M, Cimolin V, Oliveira CS. Effect of Transcranial Direct Current Stimulation Combined With Xbox-Kinect Game Experience on Upper Limb Movement in Down Syndrome: A Case Report. Front Bioeng Biotechnol 2020; 8:514. [PMID: 32548102 PMCID: PMC7273846 DOI: 10.3389/fbioe.2020.00514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 04/30/2020] [Indexed: 11/28/2022] Open
Abstract
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique used to enhance local synaptic efficacy and modulate the electrical activity of the cortex in neurological disorders. Researchers have sought to combine this type of stimulation with well-established therapeutic modalities, such as motor training involving Xbox Kinect games, which has demonstrated promising results. Thus, this study aimed to determine whether tDCS can enhance upper limb motor training in an eight-year-old child with Down Syndrome (DS) (cognitive age: five years, based on the Wechsler Intelligence Scale for Children). The evaluations consisted of three-dimensional analysis of upper limb kinematics during a reaching task performed before, after10 session, and one month after the intervention. The intervention protocol involved 1 20-min sessions of tDCS over the primary motor cortex at an intensity of 1 mA during Xbox Kinect game training involving an upper limb motor task. The analysis of the kinematic data revealed that in the pre-intervention evaluation, the dominant limb executed the task slowly and over a long path. These aspects improved at the post-intervention and follow-up evaluations, as demonstrated by the shorter total movement duration (3.05 vs. 1.58 vs. 1.52 s, respectively). Similar changes occurred with the non-dominant upper limb; a significant increase in movement velocity at the post-intervention and follow-up evaluations was observed (0.53 vs. 0.54 vs. 0.85 m/s, respectively). The present case report offers preliminary data from a protocol study, and the results confirm the notion that anodal tDCS combined with upper limb motor training leads to improvements in different kinematic variables.
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Affiliation(s)
- Jamile Benite Palma Lopes
- Health Sciences Program, Faculty of Medical Sciences of Santa Casa de São Paulo, São Paulo, Brazil.,Undergraduate Department, Faculty of Taquaritinga - FTGA, Taquaritinga, Brazil
| | - Isabela Marques Miziara
- Undergraduate Department, Faculty of Electrical Engineering, Federal University of Uberlândia, Uberlândia, Brazil.,Undergraduate Department, Faculty of Electrical and Biomedical Engineering, Federal University of Pará, Belém, Brazil
| | - Manuela Galli
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Veronica Cimolin
- Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy
| | - Claudia Santos Oliveira
- Program in Human Movement and Rehabilitation Center of Anápolis, Anápolis, Brazil.,Master's and Doctoral Program in Health Sciences, São Paulo Santa Casa School of Medical Sciences, São Paulo, Brazil
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Mondino M, Ghumman S, Gane C, Renauld E, Whittingstall K, Fecteau S. Effects of Transcranial Stimulation With Direct and Alternating Current on Resting-State Functional Connectivity: An Exploratory Study Simultaneously Combining Stimulation and Multiband Functional Magnetic Resonance Imaging. Front Hum Neurosci 2020; 13:474. [PMID: 32116597 PMCID: PMC7012783 DOI: 10.3389/fnhum.2019.00474] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 12/30/2019] [Indexed: 12/22/2022] Open
Abstract
Background: Transcranial stimulation with direct (tDCS) and alternating current (tACS) has increasingly gained interest in various fields, from cognitive neuroscience to clinical investigations. Transcranial current stimulation used alone may modulate brain activity that consequently influences behaviors, without providing information on potentially induced brain activity changes. The combination of transcranial current stimulation and functional magnetic resonance imaging (fMRI) may help to address this. This exploratory study investigated instantaneous and subsequent effects of tDCS and tACS on resting-state functional connectivity (rsFC) in healthy adults. Methods: We conducted a randomized crossover study with 15 healthy subjects receiving three stimulation conditions (tDCS, tACS, and sham) on separate days. Stimulation was applied over the left and right dorsolateral prefrontal cortex (DLPFC) for 30 min (1 mA). rsFC of the targeted prefrontal areas was assessed before, during, and after stimulation using multiband fMRI and using left and right DLPFC as seeds. Results: Both tDCS and tACS increased rsFC during and after the stimulation period, as compared to sham. tDCS-induced changes were observed between the left DLPFC and bilateral parietal regions at the junction of the superior parietal and the inferior parietal lobules. tACS-induced changes were observed between the left DLPFC and the right inferior parietal lobule. Conclusion: Overall, these results suggest that a single session with a low dose, 1 mA, of tDCS or tACS can cause changes in fronto-parietal connectivity that occur rapidly, that is, within the first 15 min. Although exploratory, this work contributes to the discussion of the potential of transcranial current stimulation to modulate resting-state networks and the interest of combining transcranial current stimulation with neuroimaging to identify these changes.
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Affiliation(s)
- Marine Mondino
- Department of Psychiatry and Neurosciences, Medical School, Université Laval, CERVO Brain Research Center, Centre Intégré Universitaire en Santé et Services Sociaux de la Capitale-Nationale, Quebec City, QC, Canada
| | - Sukhmanjit Ghumman
- Department of Radiology, Faculty of Medicine and Health Science, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Claire Gane
- Department of Psychiatry and Neurosciences, Medical School, Université Laval, CERVO Brain Research Center, Centre Intégré Universitaire en Santé et Services Sociaux de la Capitale-Nationale, Quebec City, QC, Canada
| | - Emmanuelle Renauld
- Department of Psychiatry and Neurosciences, Medical School, Université Laval, CERVO Brain Research Center, Centre Intégré Universitaire en Santé et Services Sociaux de la Capitale-Nationale, Quebec City, QC, Canada
| | - Kevin Whittingstall
- Department of Radiology, Faculty of Medicine and Health Science, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Shirley Fecteau
- Department of Psychiatry and Neurosciences, Medical School, Université Laval, CERVO Brain Research Center, Centre Intégré Universitaire en Santé et Services Sociaux de la Capitale-Nationale, Quebec City, QC, Canada
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Abstract
BACKGROUND Noninvasive brain stimulation can modulate neural processing within the motor cortex and thereby might be beneficial in the rehabilitation of hemispatial neglect after stroke. METHODS We review the pertinent literature regarding the use of transcranial direct current stimulation (tDCS) and transcranial magnetic stimulation in order to facilitate recovery of hemispatial neglect after stroke. RESULTS Twenty controlled trials (including 443 stroke patients) matched our inclusion criteria. Methodology and results of each study are presented in a comparative approach. Current data seem to indicate a better efficiency of repetitive transcranial magnetic stimulation, compared to tDCS to ameliorate hemispatial neglect after stroke. CONCLUSIONS Noninvasive brain stimulation has the potential to facilitate recovery of hemispatial neglect after stroke, but until today, there are not enough data to claim its routine use.
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Gonzalez-Perez M, Wakui E, Thoma V, Nitsche MA, Rivolta D. Transcranial alternating current stimulation (tACS) at 40 Hz enhances face and object perception. Neuropsychologia 2019; 135:107237. [DOI: 10.1016/j.neuropsychologia.2019.107237] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 07/26/2019] [Accepted: 10/20/2019] [Indexed: 01/06/2023]
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50
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Ekhtiari H, Tavakoli H, Addolorato G, Baeken C, Bonci A, Campanella S, Castelo-Branco L, Challet-Bouju G, Clark VP, Claus E, Dannon PN, Del Felice A, den Uyl T, Diana M, di Giannantonio M, Fedota JR, Fitzgerald P, Gallimberti L, Grall-Bronnec M, Herremans SC, Herrmann MJ, Jamil A, Khedr E, Kouimtsidis C, Kozak K, Krupitsky E, Lamm C, Lechner WV, Madeo G, Malmir N, Martinotti G, McDonald WM, Montemitro C, Nakamura-Palacios EM, Nasehi M, Noël X, Nosratabadi M, Paulus M, Pettorruso M, Pradhan B, Praharaj SK, Rafferty H, Sahlem G, Salmeron BJ, Sauvaget A, Schluter RS, Sergiou C, Shahbabaie A, Sheffer C, Spagnolo PA, Steele VR, Yuan TF, van Dongen JDM, Van Waes V, Venkatasubramanian G, Verdejo-García A, Verveer I, Welsh JW, Wesley MJ, Witkiewitz K, Yavari F, Zarrindast MR, Zawertailo L, Zhang X, Cha YH, George TP, Frohlich F, Goudriaan AE, Fecteau S, Daughters SB, Stein EA, Fregni F, Nitsche MA, Zangen A, Bikson M, Hanlon CA. Transcranial electrical and magnetic stimulation (tES and TMS) for addiction medicine: A consensus paper on the present state of the science and the road ahead. Neurosci Biobehav Rev 2019; 104:118-140. [PMID: 31271802 PMCID: PMC7293143 DOI: 10.1016/j.neubiorev.2019.06.007] [Citation(s) in RCA: 169] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/30/2019] [Accepted: 06/08/2019] [Indexed: 12/21/2022]
Abstract
There is growing interest in non-invasive brain stimulation (NIBS) as a novel treatment option for substance-use disorders (SUDs). Recent momentum stems from a foundation of preclinical neuroscience demonstrating links between neural circuits and drug consuming behavior, as well as recent FDA-approval of NIBS treatments for mental health disorders that share overlapping pathology with SUDs. As with any emerging field, enthusiasm must be tempered by reason; lessons learned from the past should be prudently applied to future therapies. Here, an international ensemble of experts provides an overview of the state of transcranial-electrical (tES) and transcranial-magnetic (TMS) stimulation applied in SUDs. This consensus paper provides a systematic literature review on published data - emphasizing the heterogeneity of methods and outcome measures while suggesting strategies to help bridge knowledge gaps. The goal of this effort is to provide the community with guidelines for best practices in tES/TMS SUD research. We hope this will accelerate the speed at which the community translates basic neuroscience into advanced neuromodulation tools for clinical practice in addiction medicine.
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Affiliation(s)
| | - Hosna Tavakoli
- Institute for Cognitive Science Studies (ICSS), Iran; Iranian National Center for Addiction Studies (INCAS), Iran
| | - Giovanni Addolorato
- Alcohol Use Disorder Unit, Division of Internal Medicine, Gastroenterology and Hepatology Unit, Catholic University of Rome, A. Gemelli Hospital, Rome, Italy; Fondazione Policlinico Universitario A Gemelli IRCCS, Rome, Italy
| | - Chris Baeken
- Department of Psychiatry and Medical Psychology, University Hospital Ghent, Ghent, Belgium
| | - Antonello Bonci
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | | | | | - Vincent P Clark
- University of New Mexico, USA; The Mind Research Network, USA
| | | | | | - Alessandra Del Felice
- University of Padova, Department of Neuroscience, Padova, Italy; Padova Neuroscience Center (PNC), University of Padova, Padova, Italy
| | | | - Marco Diana
- 'G. Minardi' Laboratory of Cognitive Neuroscience, Department of Chemistry and Pharmacy, University of Sassari, Italy
| | | | - John R Fedota
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | | | - Luigi Gallimberti
- Novella Fronda Foundation, Human Science and Brain Research, Padua, Italy
| | | | - Sarah C Herremans
- Department of Psychiatry and Medical Psychology, University Hospital Ghent, Ghent, Belgium
| | - Martin J Herrmann
- Center of Mental Health, Department of Psychiatry, Psychosomatics, and Psychotherapy, University Hospital of Würzburg, Würzburg, Germany
| | - Asif Jamil
- Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | | | | | - Karolina Kozak
- University of Toronto, Canada; Centre for Addiction and Mental Health (CAMH), Canada
| | - Evgeny Krupitsky
- V. M. Bekhterev National Medical Research Center for Psychiatry and Neurology, St.-Petersburg, Russia; St.-Petersburg First Pavlov State Medical University, Russia
| | - Claus Lamm
- Department of Basic Psychological Research and Research Methods, Faculty of Psychology, University of Vienna, Austria
| | | | - Graziella Madeo
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | | | | | - William M McDonald
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Chiara Montemitro
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA; University G.d'Annunzio of Chieti-Pescara, Italy
| | | | - Mohammad Nasehi
- Cognitive and Neuroscience Research Center (CNRC), Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Xavier Noël
- Université Libre de Bruxelles (ULB), Belgium
| | | | | | | | | | - Samir K Praharaj
- Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Haley Rafferty
- Spaulding Rehabilitation Hospital, Harvard Medical School, USA
| | | | - Betty Jo Salmeron
- Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD, USA
| | - Anne Sauvaget
- Laboratory «Movement, Interactions, Performance» (E.A. 4334), University of Nantes, 25 Bis Boulevard Guy Mollet, BP 72206, 44322, Nantes Cedex 3, France; CHU de Nantes Addictology and Liaison Psychiatry Department, University Hospital Nantes, Nantes Cedex 3, France
| | - Renée S Schluter
- Laureate Institute for Brain Research, USA; Institute for Cognitive Science Studies (ICSS), Iran
| | | | - Alireza Shahbabaie
- Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | | | | | - Vaughn R Steele
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - Ti-Fei Yuan
- Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, China
| | | | - Vincent Van Waes
- Laboratoire de Neurosciences Intégratives et Cliniques EA481, Université Bourgogne Franche-Comté, Besançon, France
| | | | | | | | - Justine W Welsh
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | | | | | - Fatemeh Yavari
- Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Mohammad-Reza Zarrindast
- Department of Pharmacology School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Laurie Zawertailo
- University of Toronto, Canada; Centre for Addiction and Mental Health (CAMH), Canada
| | - Xiaochu Zhang
- University of Science and Technology of China, China
| | | | - Tony P George
- University of Toronto, Canada; Centre for Addiction and Mental Health (CAMH), Canada
| | | | - Anna E Goudriaan
- Department of Psychiatry, Amsterdam Institute for Addiction Research, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands; Arkin, Department of Research and Quality of Care, Amsterdam, The Netherlands
| | | | | | - Elliot A Stein
- Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - Felipe Fregni
- Spaulding Rehabilitation Hospital, Harvard Medical School, USA
| | - Michael A Nitsche
- Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany; University Medical Hospital Bergmannsheil, Dept. Neurology, Bochum, Germany
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