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Transcranial direct current stimulation

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https://www.readbyqxmd.com/read/28432349/augmentation-of-working-memory-training-by-transcranial-direct-current-stimulation-tdcs
#1
Steffen Philipp Ruf, Andreas J Fallgatter, Christian Plewnia
Transcranial direct current stimulation (tDCS) to the dorsolateral prefrontal cortex (dlPFC) can modulate working memory (WM) performance. However, evidence regarding the enhancement of WM training, its sustainability and transferability is ambiguous. Since WM functioning appears to be lateralized in respect to stimulus characteristics, this study examined the difference between task-congruent (spatial-right, verbal-left), task-incongruent (spatial-left, verbal-right) and sham tDCS in regards to the efficacy of WM training...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427911/safety-parameter-considerations-of-anodal-transcranial-directcurrentstimulation-in-rats
#2
Mark P Jackson, Dennis Truong, Milene L Brownlow, Jessica A Wagner, R Andy McKinley, Marom Bikson, Ryan Jankord
A commonly referenced transcranial Direct Current Stimulation (tDCS) safety threshold derives from tDCS lesion studies in the rat and relies on electrode current density (and related electrode charge density) to support clinical guidelines. Concerns about the role of polarity (e.g. anodal tDCS), sub-lesion threshold injury (e.g. neuroinflammatory processes), and role of electrode montage across rodent and human studies support further investigation into animal models of tDCS safety. Thirty-two anesthetized rats received anodal tDCS between 0-5 mA for 60 minutes through one of three epicranial electrode montages...
April 17, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28427306/prefrontal-tdcs-and-sertraline-in-obsessive-compulsive-disorder-a-case-report-and-review-of-the-literature
#3
Ulrich Palm, Bianka Leitner, Beatrice Kirsch, Nora Behler, Ulrike Kumpf, Linda Wulf, Frank Padberg, Alkomiet Hasan
Obsessive-compulsive (OC) disorder is a disabling disorder resulting in tremendous individual and social burden. It has a large overlap with depression and anxiety disorders and shows treatment resistance in a relevant proportion of patients. Since a couple of years, different noninvasive brain stimulation methods have been investigated to improve OC symptoms. The application of transcranial direct current stimulation (tDCS) has shown inconsistent results which can probably be attributed to a lack in randomized controlled trials with adequate sample size...
April 21, 2017: Neurocase
https://www.readbyqxmd.com/read/28426515/can-transcranial-direct-current-stimulation-improve-muscle-power-in-individuals-with-advanced-resistance-training-experience
#4
Eduardo Lattari, Carlos Campos, Murilo Khede Lamego, Sandro Legey Passos de Souza, Geraldo M Neto, Nuno B Rocha, Aldair José de Oliveira, Sandro Carpenter, Sérgio Machado
The aim of this study was to investigate the effects of transcranial direct current stimulation (tDCS) on countermovement jump performance (CMJ) in men with advanced strength training experience. Ten healthy male subjects, with advanced strength training and squatting exercise experience, were included. Participants took part in an initial visit to the laboratory to complete anthropometric measurements and CMJ kinematic test-retest reliability. Participants then completed three experimental conditions, 48-72 hours apart, in a randomized, double-blinded crossover design: anodal, cathodal and sham tDCS (2 mA for 20 minutes targeting the motor cortex bilaterally)...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28424953/treatment-update-of-chronic-migraine
#5
REVIEW
Soo-Jin Cho, Tae-Jin Song, Min Kyung Chu
PURPOSE OF REVIEW: Although chronic migraine (CM) is a common disorder that severely impacts patient functioning and quality of life, it is usually underdiagnosed, and treatment responses often remain poor even after diagnosis. In addition, effective treatment options are limited due to the rarity of randomized controlled trials (RCTs) involving patients with CM. In the present review, we discuss updated pharmacological, non-pharmacological, and neurostimulation treatment options for CM...
June 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28424645/cerebellar-tdcs-does-not-enhance-performance-in-an-implicit-categorization-learning-task
#6
Marie C Verhage, Eric O Avila, Maarten A Frens, Opher Donchin, Jos N van der Geest
Background: Transcranial Direct Current Stimulation (tDCS) is a form of non-invasive electrical stimulation that changes neuronal excitability in a polarity and site-specific manner. In cognitive tasks related to prefrontal and cerebellar learning, cortical tDCS arguably facilitates learning, but the few studies investigating cerebellar tDCS, however, are inconsistent. Objective: We investigate the effect of cerebellar tDCS on performance of an implicit categorization learning task. Methods: Forty participants performed a computerized version of an implicit categorization learning task where squares had to be sorted into two categories, according to an unknown but fixed rule that integrated both the size and luminance of the square...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28422634/functional-brain-stimulation-in-a-chronic-stroke-survivor-with-moderate-impairment
#7
Heather T Peters, Janell Pisegna, Julie Faieta, Stephen J Page
OBJECTIVE: To determine the impact of transcranial direct current stimulation (tDCS) combined with repetitive, task-specific training (RTP) on upper-extremity (UE) impairment in a chronic stroke survivor with moderate impairment. METHOD: The participant was a 54-yr-old woman with chronic, moderate UE hemiparesis after a single stroke that had occurred 10 yr before study enrollment. She participated in 45-min RTP sessions 3 days/wk for 8 wk. tDCS was administered concurrent to the first 20 min of each RTP session...
May 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/28420970/single-session-anodal-tdcs-with-small-size-stimulating-electrodes-over-frontoparietal-superficial-sites-does-not-affect-motor-sequence-learning
#8
Fahimeh Hashemirad, Paul B Fitzgerald, Maryam Zoghi, Shapour Jaberzadeh
Due to the potential of anodal transcranial direct current stimulation (a-tDCS) for enhancement of fine sequenced movements and increasing interest in achieving high level of fine movements in the trained and untrained hands especially at initial stage of learning, we designed this study to investigate whether the application of single-session a-tDCS with small-size stimulating electrodes over FPN sites, such as dorsolateral prefrontal cortex (DLPFC), primary motor cortex (M1) or posterior parietal cortex (PPC) could enhance sequence learning with the trained hand and these effects are transferred into the untrained hand or not...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28420959/transcranial-direct-current-stimulation-does-not-affect-lower-extremity-muscle-strength-training-in-healthy-individuals-a-triple-blind-sham-controlled-study
#9
Kazuhei Maeda, Tomofumi Yamaguchi, Tsuyoshi Tatemoto, Kunitsugu Kondo, Yohei Otaka, Satoshi Tanaka
The present study investigated the effects of anodal transcranial direct current stimulation (tDCS) on lower extremity muscle strength training in 24 healthy participants. In this triple-blind, sham-controlled study, participants were randomly allocated to the anodal tDCS plus muscle strength training (anodal tDCS) group or sham tDCS plus muscle strength training (sham tDCS) group. Anodal tDCS (2 mA) was applied to the primary motor cortex of the lower extremity during muscle strength training of the knee extensors and flexors...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28420581/response-variability-of-different-anodal-transcranial-direct-current-stimulation-intensities-across-multiple-sessions
#10
Claudia Ammann, Martin A Lindquist, Pablo A Celnik
BACKGROUND: It is well known that transcranial direct current stimulation (tDCS) is capable of modulating corticomotor excitability. However, a source of growing concern has been the observed inter- and intra-individual variability of tDCS-responses. Recent studies have assessed whether individuals respond in a predictable manner across repeated sessions of anodal tDCS (atDCS). The findings of these investigations have been inconsistent, and their methods have some limitations (i.e. lack of sham condition or testing only one tDCS intensity)...
April 10, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28420382/effect-of-tdcs-stimulation-of-motor-cortex-and-cerebellum-on-eeg-classification-of-motor-imagery-and-sensorimotor-band-power
#11
Irma N Angulo-Sherman, Marisol Rodríguez-Ugarte, Nadia Sciacca, Eduardo Iáñez, José M Azorín
BACKGROUND: Transcranial direct current stimulation (tDCS) is a technique for brain modulation that has potential to be used in motor neurorehabilitation. Considering that the cerebellum and motor cortex exert influence on the motor network, their stimulation could enhance motor functions, such as motor imagery, and be utilized for brain-computer interfaces (BCIs) during motor neurorehabilitation. METHODS: A new tDCS montage that influences cerebellum and either right-hand or feet motor area is proposed and validated with a simulation of electric field...
April 19, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28419862/the-effect-of-tdcs-over-the-right-temporo-parietal-junction-on-pain-empathy
#12
Michel-Pierre Coll, Marie-Pier B Tremblay, Philip L Jackson
Empathy is a complex psychological phenomenon crucial for social perception and interactions. Several lines of evidence suggest that the right temporo-parietal junction is involved in self-other control mechanisms that play an important role in empathic responses. However, limited direct evidence of the involvement of this region in empathic responses is currently available. In this study, inhibitory transcranial direct current stimulation over this region influenced empathic responses to others' pain. It was found that compared to participants that received anodal or sham transcranial direct current stimulation, participants who received cathodal transcranial direct current stimulation over the right temporo-parietal junction perceived the pain of others as less intense compared to sham stimulation and showed decreased late event related potentials to facial expressions of pain...
April 15, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28417104/combined-bifrontal-transcranial-direct-current-stimulation-and-tailor-made-notched-music-training-in-chronic-tinnitus
#13
Ho Yun Lee, Myoung Su Choi, Dong Sik Chang, Chin-Saeng Cho
BACKGROUND AND OBJECTIVES: We evaluated the short-term treatment outcomes of combined bifrontal transcranial direct current stimulation (tDCS) and tailor-made notched music training (TMNMT) in tinnitus patients. The associations of patient characteristics with treatment responsiveness were investigated. SUBJECTS AND METHODS: Four sessions of bifrontal tDCS (F4: anode, F3: cathode) and TMNMT were conducted over a 2-week period in tinnitus patients. For tDCS, the stimulation intensity was 1...
April 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28416160/the-antidepressant-like-effect-of-tdcs-in-mice-a-behavioral-and-neurobiological-characterization
#14
Tanat Peanlikhit, Vincent Van Waes, Solène Pedron, Pierre-Yves Risold, Emmanuel Haffen, Adeline Etiévant, Julie Monnin
BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasive method increasingly popular for the treatment of several brain disorders, such as major depression. Despite great enthusiasm and promising results, some studies report discrepant findings and no consensus exists for the clinical use of tDCS. OBJECTIVE: The present study aims to (i) determine the most effective stimulation parameters to optimize antidepressant-like effect of tDCS in the forced-swim test in mice and (ii) identify brain regions recruited by tDCS and possibly involved in its behavioral effect using Fos immunohistochemistry...
March 29, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28413944/the-assessment-of-motor-fatigability-in-persons-with-multiple-sclerosis-a-systematic-review
#15
Deborah Severijns, Inge Zijdewind, Ulrik Dalgas, Ilse Lamers, Caroline Lismont, Peter Feys
BACKGROUND: Persons with multiple sclerosis (PwMS) are often characterized by increased motor fatigability, which is a performance change on an objectively measured criterion after any type of voluntary muscle contractions. This review summarizes the existing literature to determine which protocols and outcome measures are best to detect or study motor fatigability and the underlying mechanisms in MS. METHODS: Two electronic databases, PubMed and Web of Science, were searched for relevant articles published until August 2016 with a combination of multiple sclerosis, fatigability, muscle fatigue, and motor fatigue...
May 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28410884/the-effect-of-transcranial-direct-current-stimulation-on-motor-sequence-learning-and-upper-limb-function-after-stroke
#16
Melanie K Fleming, John C Rothwell, Laszlo Sztriha, James T Teo, Di J Newham
OBJECTIVE: To assess the impact of electrode arrangement on the efficacy of tDCS in stroke survivors and determine whether changes in transcallosal inhibition (TCI) underlie improvements. METHODS: 24 stroke survivors (3-124months post-stroke) with upper limb impairment participated. They received blinded tDCS during a motor sequence learning task, requiring the paretic arm to direct a cursor to illuminating targets on a monitor. Four tDCS conditions were studied (crossover); anodal to ipsilesional M1, cathodal to contralesional M1, bihemispheric, sham...
March 31, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28410876/the-treatment-of-fatigue-by-non-invasive-brain-stimulation
#17
REVIEW
Jean-Pascal Lefaucheur, Moussa A Chalah, Alaa Mhalla, Ulrich Palm, Samar S Ayache, Veit Mylius
The use of non-invasive brain neurostimulation (NIBS) techniques to treat neurological or psychiatric diseases is currently under development. Fatigue is a commonly observed symptom in the field of potentially treatable pathologies by NIBS, yet very little data has been published regarding its treatment. We conducted a review of the literature until the end of February 2017 to analyze all the studies that reported a clinical assessment of the effects of NIBS techniques on fatigue. We have limited our analysis to repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS)...
April 11, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28404455/modulation-of-itbs-after-effects-via-concurrent-directional-tdcs-a-proof-of-principle-study
#18
Sara Tremblay, Ricci Hannah, Vishal Rawji, John C Rothwell
BACKGROUND: Polarising currents can modulate membrane potentials in animals, affecting the after-effect of theta burst stimulation (TBS) on synaptic strength. OBJECTIVE: We examined whether a similar phenomenon could also be observed in human motor cortex (M1) using transcranial direct current stimulation (TDCS) during monophasic intermittent TBS (iTBS). METHODS: TDCS was applied during posterior-anterior iTBS using three different conditions: posterior-anterior TDCS (anode 3...
March 23, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28403323/a-critical-review-of-trials-of-transcranial-direct-current-stimulation-and-trigeminal-nerve-stimulation-for-depression-the-issue-of-treatment-emergent-mania
#19
REVIEW
Pedro Shiozawa, Quirino Cordeiro, Hyong Jin Cho, Alisson Paulino Trevizol, Elisa Brietzke
Objective: This study is a critical review analyzing occurrence of treatment-emergent mania (TEM) related to transcranial direct current stimulation (tDCS) and trigeminal nerve stimulation (TNS). Method: We present a systematic review of the literature on TEM related to tDCS and TNS treatment for major depressive disorder (MDD), conducted in accordance with the recommendations from Cochrane Group and the PRISMA guidelines. Results: Our search identified few reported episodes of TEM in the literature...
January 2017: Trends in Psychiatry and Psychotherapy
https://www.readbyqxmd.com/read/28398968/treadmill-walking-combined-with-anodal-transcranial-direct-current-stimulation-in-parkinson-disease-a-pilot-study-of-kinematic-and-neurophysiological-effects
#20
Helena Fernández-Lago, Olalla Bello, Francina Mora-Cerdá, Jorge Montero-Cámara, Miguel Ángel Fernández-Del-Olmo
OBJECTIVE: We tested the hypothesis that combining treadmill walking with transcranial direct current stimulation (tDCS) enhances the gait improvements associated with treadmill walking in Parkinson disease. We explored the effects of these combined methodologies on corticospinal parameters. DESIGN: Eighteen participants with Parkinson disease were evaluated under the following three conditions: treadmill walking alone (treadmill), treadmill walking combined with anodal tDCS (AtDCS+treadmill) delivered over the motor cortex, and treadmill walking combined with sham stimulation (StDCS+treadmill)...
April 8, 2017: American Journal of Physical Medicine & Rehabilitation
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