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Transcranial direct current stimulation

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https://www.readbyqxmd.com/read/27912107/limits-to-tdcs-effects-in-language-failures-to-modulate-word-production-in-healthy-participants-with-frontal-or-temporal-tdcs
#1
Samuel J Westwood, Andrew Olson, R Chris Miall, Raffaele Nappo, Cristina Romani
Transcranial direct current stimulation (tDCS) is a method of non-invasive brain stimulation widely used to modulate cognitive functions. Recent studies, however, suggests that effects are unreliable, small and often non-significant at least when stimulation is applied in a single session to healthy individuals. We examined the effects of frontal and temporal lobe anodal tDCS on naming and reading tasks and considered possible interactions with linguistic activation and selection mechanisms as well as possible interactions with item difficulty and participant individual variability...
November 3, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27909747/transcranial-direct-current-stimulation-tdcs-to-the-supplementary-motor-area-sma-influences-performance-on-motor-tasks
#2
K E Hupfeld, C J Ketcham, H D Schneider
The supplementary motor area (SMA) is believed to be highly involved in the planning and execution of both simple and complex motor tasks. This study aimed to examine the role of the SMA in planning the movements required to complete reaction time, balance, and pegboard tasks using anodal transcranial direct current stimulation (tDCS), which passes a weak electrical current between two electrodes, in order to modulate neuronal activity. Twenty healthy adults were counterbalanced to receive either tDCS (experimental condition) or no tDCS (control condition) for 3 days...
December 1, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27904911/effect-of-bihemispheric-anodal-transcranial-direct-current-stimulation-for-dysphagia-in-chronic-stroke-patients-a-randomized-clinical-trial
#3
Young Hyun Ahn, Hyun-Joo Sohn, Jin-Sung Park, Tae Gyu Ahn, Yong Beom Shin, Minsu Park, Sung-Hwa Ko, Yong-Il Shin
OBJECTIVE: To investigate whether bihemispheric anodal transcranial direct current stimulation (tDCS) with conventional dysphagia therapy could improve swallowing function in chronic stroke patients with dysphagia. DESIGN: Randomized controlled trial. SUBJECTS: Twenty-six patients with dysphagia for at least 6 months post-stroke were randomly assigned into: (i) bihemispheric anodal tDCS group; or (ii) sham group. METHODS: All patients underwent 10 tDCS sessions with simultaneous conventional swallowing therapy for 2 weeks...
November 30, 2016: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/27903289/changes-in-cerebral-glucose-metabolism-after-3%C3%A2-weeks-of-noninvasive-electrical-stimulation-of-mild-cognitive-impairment-patients
#4
Kyongsik Yun, In-Uk Song, Yong-An Chung
BACKGROUND: Mild cognitive impairment (MCI) is a syndrome that disrupts an individual's cognitive function but preserves activities of daily living. MCI is thought to be a prodromal stage of dementia, which disrupts patients' daily lives and causes severe cognitive dysfunction. Although extensive clinical trials have attempted to slow or stop the MCI to dementia conversion, the results have been largely unsuccessful. The purpose of this study was to determine whether noninvasive electrical stimulation of MCI changes glucose metabolism...
December 1, 2016: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/27901245/transcranial-direct-current-stimulation-for-treatment-resistant-obsessive-compulsive-disorder-report-on-two-cases-and-proposal-for-a-randomized-sham-controlled-trial
#5
Renata de Melo Felipe da Silva, André Russowsky Brunoni, Eurípedes Constantino Miguel, Roseli Gedanke Shavitt
CONTEXT AND OBJECTIVE: Neuromodulation techniques for treating obsessive-compulsive disorder (OCD) have expanded through greater understanding of the brain circuits involved in this disorder. Transcranial direct current stimulation (tDCS), a non-invasive technique, has been studied as an alternative for treatment-resistant OCD. We describe the design of a clinical trial using tDCS for OCD and report on the outcomes from two patients with primary OCD who were resistant to cognitive-behavioral therapy and to selective serotonin reuptake inhibitors, and who received tDCS in an open manner during the training phase for the study procedures...
September 2016: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/27899889/anodal-tdcs-to-right-dorsolateral-prefrontal-cortex-facilitates-performance-for-novice-jazz-improvisers-but-hinders-experts
#6
David S Rosen, Brian Erickson, Youngmoo E Kim, Daniel Mirman, Roy H Hamilton, John Kounios
Research on creative cognition reveals a fundamental disagreement about the nature of creative thought, specifically, whether it is primarily based on automatic, associative (Type-1) or executive, controlled (Type-2) processes. We hypothesized that Type-1 and Type-2 processes make differential contributions to creative production that depend on domain expertise. We tested this hypothesis with jazz pianists whose expertise was indexed by the number of public performances given. Previous fMRI studies of musical improvisation have reported that domain expertise is characterized by deactivation of the right-dorsolateral prefrontal cortex (r-DLPFC), a brain area associated with Type-2 executive processing...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27899754/transcranial-direct-current-stimulation-potentiates-improvements-in-functional-ability-in-patients-with-chronic-stroke-receiving-constraint-induced-movement-therapy
#7
Krystian Figlewski, Jakob Udby Blicher, Jesper Mortensen, Kåre Eg Severinsen, Jørgen Feldbæk Nielsen, Henning Andersen
BACKGROUND AND PURPOSE: Transcranial direct current stimulation may enhance effect of rehabilitation in patients with chronic stroke. The objective was to evaluate the efficacy of anodal transcranial direct current stimulation combined with constraint-induced movement therapy of the paretic upper limb. METHODS: A total of 44 patients with stroke were randomly allocated to receive 2 weeks of constraint-induced movement therapy with either anodal or sham transcranial direct current stimulation...
November 29, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/27897670/boosting-cognition-effects-of-multiple-session-transcranial-direct-current-stimulation-on-working-memory
#8
Lotte J Talsma, Henryk A Kroese, Heleen A Slagter
Transcranial direct current stimulation (tDCS) is a promising tool for neurocognitive enhancement. Several studies have shown that just a single session of tDCS over the left dorsolateral pFC (lDLPFC) can improve the core cognitive function of working memory (WM) in healthy adults. Yet, recent studies combining multiple sessions of anodal tDCS over lDLPFC with verbal WM training did not observe additional benefits of tDCS in subsequent stimulation sessions nor transfer of benefits to novel WM tasks posttraining...
November 29, 2016: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/27897150/effect-of-microscopic-modeling-of-skin-in-electrical-and-thermal-analysis-of-transcranial-direct-current-stimulation
#9
Jose Gomez-Tames, Yukiya Sugiyama, Ilkka Laakso, Satoshi Tanaka, Soichiro Koyama, Norihiro Sadato, Akimasa Hirata
Transcranial direct current stimulation (tDCS) is a neuromodulation scheme where a small current is delivered to the brain via two electrodes attached to the scalp. The electrode design is an important topic, not only as regards efficacy, but also from a safety perspective, as tDCS may be related to skin lesions that are sometimes observed after stimulation. Previous computational models of tDCS have omitted the effects of microscopic structures in the skin, and the different soak conditions of the electrodes, and model validation has been limited...
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27895475/transcranial-direct-current-stimulation-improves-the-qt-variability-index-and-autonomic-cardiac-control-in-healthy-subjects-older-than-60-years
#10
Gianfranco Piccirillo, Cristina Ottaviani, Claudia Fiorucci, Nicola Petrocchi, Federica Moscucci, Claudia Di Iorio, Fabiola Mastropietri, Ilaria Parrotta, Matteo Pascucci, Damiano Magrì
BACKGROUND: Noninvasive brain stimulation technique is an interesting tool to investigate the causal relation between cortical functioning and autonomic nervous system (ANS) responses. OBJECTIVE: The objective of this report is to evaluate whether anodal transcranial direct current stimulation (tDCS) over the temporal cortex influences short-period temporal ventricular repolarization dispersion and cardiovascular ANS control in elderly subjects. SUBJECTS AND METHODS: In 50 healthy subjects (29 subjects younger than 60 years and 21 subjects older than 60 years) matched for gender, short-period RR and systolic blood pressure spectral variability, QT variability index (QTVI), and noninvasive hemodynamic data were obtained during anodal tDCS or sham stimulation...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27894158/craving-behavioral-intervention-for-internet-gaming-disorder-remediation-of-functional-connectivity-of-the-ventral-striatum
#11
Jin-Tao Zhang, Shan-Shan Ma, Chiang-Shan R Li, Lu Liu, Cui-Cui Xia, Jing Lan, Ling-Jiao Wang, Ben Liu, Yuan-Wei Yao, Xiao-Yi Fang
Psychobehavioral intervention is an effective treatment of Internet addiction, including Internet gaming disorder (IGD). However, the neural mechanisms underlying its efficacy remain unclear. Cortical-ventral striatum (VS) circuitry is a common target of psychobehavioral interventions in drug addiction, and cortical-VS dysfunction has been reported in IGD; hence, the primary aim of the study was to investigate how the VS circuitry responds to psychobehavioral interventions in IGD. In a cross-sectional study, we examined resting-state functional connectivity of the VS in 74 IGD subjects (IGDs) and 41 healthy controls (HCs)...
November 28, 2016: Addiction Biology
https://www.readbyqxmd.com/read/27891626/does-trans-spinal-and-local-dc-polarization-affect-presynaptic-inhibition-and-post-activation-depression
#12
D Kaczmarek, J Ristikankare, E Jankowska
Direct current (DC) polarization has been demonstrated to alleviate the effects of various deficits in the operation of the central nervous system. However, the effects of trans-spinal DC stimulation (tsDCS) have been investigated less extensively than the effects of transcranial DC stimulation (tDCS), and their cellular mechanisms have not been elucidated. The main objectives of this study were, therefore, to extend our previous analysis of DC effects on the excitability of primary afferents and synaptic transmission by examining the effects of DC on two spinal modulatory feed-back systems, presynaptic inhibition and post-activation depression, in an anaesthetized rat preparation...
November 28, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27885309/transcranial-direct-current-stimulation-use-in-the-treatment-of-neuropsychiatric-disorders-a-brief-review
#13
Sarah M Szymkowicz, Molly E McLaren, Uma Suryadevara, Adam J Woods
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that has grown in popularity over the past two decades as an alternative treatment option for various neuropsychiatric disorders. tDCS modulates cortical excitability through the application of a weak direct current to the scalp via electrodes placed over cortical regions of interest. It has been shown to be a promising and relatively safe treatment tool with few adverse events. In this article, we will briefly review the efficacy of tDCS in depression, bipolar disorder, schizophrenia, and obsessive-compulsive disorder...
November 2016: Psychiatric Annals
https://www.readbyqxmd.com/read/27881958/motor-cortex-neurostimulation-technologies-for-chronic-post-stroke-pain-implications-of-tissue-damage-on-stimulation-currents
#14
Anthony T O'Brien, Rivadavio Amorim, R Jarrett Rushmore, Uri Eden, Linda Afifi, Laura Dipietro, Timothy Wagner, Antoni Valero-Cabré
Background: Central post stroke pain (CPSP) is a highly refractory syndrome that can occur after stroke. Primary motor cortex (M1) brain stimulation using epidural brain stimulation (EBS), transcranial magnetic stimulation (TMS), and transcranial direct current stimulation (tDCS) have been explored as potential therapies for CPSP. These techniques have demonstrated variable clinical efficacy. It is hypothesized that changes in the stimulating currents that are caused by stroke-induced changes in brain tissue conductivity limit the efficacy of these techniques...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27876306/effects-of-hd-tdcs-on-memory-and-metamemory-for-general-knowledge-questions-that-vary-by-difficulty
#15
Elizabeth F Chua, Rifat Ahmed, Sandry M Garcia
BACKGROUND: The ability to monitor one's own memory is an important feature of normal memory and is an aspect of 'metamemory'. Lesion studies have shown dissociations between memory and metamemory, but only single dissociations have been shown using transcranial direct current stimulation (tDCS). One potential reason that only single dissociations have been shown is that tDCS effects may be moderated by task difficulty. OBJECTIVE/HYPOTHESIS: We used high definition (HD) tDCS to test for dissociable roles of the dorsolateral prefrontal cortex (DLPFC) and anterior temporal lobe (ATL) in semantic long-term memory and metamemory tasks...
November 1, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/27872589/corrigendum-no-effect-of-anodal-transcranial-direct-current-stimulation-over-the-motor-cortex-on-response-related-erps-during-a-conflict-task
#16
Alexander C Conley, W R Fulham, Jodie L Marquez, Mark W Parsons, Frini Karayanidis
[This corrects the article on p. 384 in vol. 10, PMID: 27547180.].
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27872369/the-impact-of-cerebellar-transcranial-direct-current-stimulation-tdcs-on-learning-fine-motor-sequences
#17
Renee E Shimizu, Allan D Wu, Jasmine K Samra, Barbara J Knowlton
The cerebellum has been shown to be important for skill learning, including the learning of motor sequences. We investigated whether cerebellar transcranial direct current stimulation (tDCS) would enhance learning of fine motor sequences. Because the ability to generalize or transfer to novel task variations or circumstances is a crucial goal of real world training, we also examined the effect of tDCS on performance of novel sequences after training. In Study 1, participants received either anodal, cathodal or sham stimulation while simultaneously practising three eight-element key press sequences in a non-repeating, interleaved order...
January 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27869996/efficacy-of-noninvasive-brain-stimulation-on-pain-control-in-migraine-patients-a-systematic-review-and-meta-analysis
#18
REVIEW
Lívia Shirahige, Lorena Melo, Fernanda Nogueira, Sérgio Rocha, Kátia Monte-Silva
OBJECTIVE: To evaluate the efficacy of noninvasive brain stimulation (NIBS) on pain control in migraine patients. BACKGROUND: Recent studies have used NIBS as an abortive and prophylactic treatment for migraine; however, its efficacy regarding meaningful clinical effects remains to be critically analyzed. DESIGN: Systematic review of controlled clinical trials. METHODS: Searches were conducted in six databases: MEDLINE (via PubMed), LILACS (via BIREME), CINAHL (via EBSCO), Scopus (via EBSCO), Web of Science, and CENTRAL...
November 2016: Headache
https://www.readbyqxmd.com/read/27866120/evidence-based-guidelines-on-the-therapeutic-use-of-transcranial-direct-current-stimulation-tdcs
#19
REVIEW
Jean-Pascal Lefaucheur, Andrea Antal, Samar S Ayache, David H Benninger, Jérôme Brunelin, Filippo Cogiamanian, Maria Cotelli, Dirk De Ridder, Roberta Ferrucci, Berthold Langguth, Paola Marangolo, Veit Mylius, Michael A Nitsche, Frank Padberg, Ulrich Palm, Emmanuel Poulet, Alberto Priori, Simone Rossi, Martin Schecklmann, Sven Vanneste, Ulf Ziemann, Luis Garcia-Larrea, Walter Paulus
A group of European experts was commissioned by the European Chapter of the International Federation of Clinical Neurophysiology to gather knowledge about the state of the art of the therapeutic use of transcranial direct current stimulation (tDCS) from studies published up until September 2016, regarding pain, Parkinson's disease, other movement disorders, motor stroke, poststroke aphasia, multiple sclerosis, epilepsy, consciousness disorders, Alzheimer's disease, tinnitus, depression, schizophrenia, and craving/addiction...
October 29, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27865707/a-comprehensive-database-of-published-tdcs-clinical-trials-2005-2016
#20
REVIEW
Jean-Pascal Lefaucheur
Transcranial direct current stimulation (tDCS) is a technique of noninvasive cortical stimulation allowing significant modification of brain functions. Clinical application of this technique was reported for the first time in March 2005. This paper presents a detailed list of the 340 articles (excluding single case reports) which have assessed the clinical effect of tDCS in patients, at least when delivered to cortical targets. The reviewed conditions were: pain syndromes, Parkinson's disease, dystonia, cerebral palsy, post-stroke limb motor impairment, post-stroke neglect, post-stroke dysphagia, post-stroke aphasia, primary progressive aphasia, multiple sclerosis, epilepsy, consciousness disorders, Alzheimer's disease and other types of dementia, tinnitus, depression, auditory hallucinations and negative symptoms of schizophrenia, addiction and craving, autism, and attention disorders...
December 2016: Neurophysiologie Clinique, Clinical Neurophysiology
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