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https://www.readbyqxmd.com/read/28539894/modulation-of-brain-activity-with-noninvasive-transcranial-direct-current-stimulation-tdcs-clinical-applications-and-safety-concerns
#1
REVIEW
Haichao Zhao, Lei Qiao, Dongqiong Fan, Shuyue Zhang, Ofir Turel, Yonghui Li, Jun Li, Gui Xue, Antao Chen, Qinghua He
Transcranial direct current stimulation (tDCS) is a widely-used tool to induce neuroplasticity and modulate cortical function by applying weak direct current over the scalp. In this review, we first introduce the underlying mechanism of action, the brief history from discovery to clinical scientific research, electrode positioning and montages, and parameter setup of tDCS. Then, we review tDCS application in clinical samples including people with drug addiction, major depression disorder, Alzheimer's disease, as well as in children...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28525601/too-fast-or-too-slow-time-and-neuronal-variability-in-bipolar-disorder-a-combined-theoretical-and-empirical-investigation
#2
Georg Northoff, Paola Magioncalda, Matteo Martino, Hsin-Chien Lee, Ying-Chi Tseng, Timothy Lane
Time is an essential feature in bipolar disorder (BP). Manic and depressed BP patients perceive the speed of time as either too fast or too slow. The present article combines theoretical and empirical approaches to integrate phenomenological, psychological, and neuroscientific accounts of abnormal time perception in BP. Phenomenology distinguishes between perception of inner time, ie, self-time, and outer time, ie, world-time, that desynchronize or dissociate from each other in BP: inner time speed is abnormally slow (as in depression) or fast (as in mania) and, by taking on the role as default-mode function, impacts and modulates the perception of outer time speed in an opposite way, ie, as too fast in depression and too slow in mania...
May 19, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28505499/clinical-predictors-of-acute-response-to-transcranial-direct-current-stimulation-tdcs-in-major-depression
#3
Giordano D'Urso, Bernardo Dell'Osso, Rodolfo Rossi, Andre Russowsky Brunoni, Marco Bortolomasi, Roberta Ferrucci, Alberto Priori, Andrea de Bartolomeis, Alfredo Carlo Altamura
BACKGROUND: Transcranial direct current stimulation (tDCS) is a promising neuromodulation intervention for poor-responding or refractory depressed patients. However, little is known about predictors of response to this therapy. The present study aimed to analyze clinical predictors of response to tDCS in depressed patients. METHODS: Clinical data from 3 independent tDCS trials on 171 depressed patients (including unipolar and bipolar depression), were pooled and analyzed to assess predictors of response...
May 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28496402/cortico-striatal-thalamic-loop-circuits-of-the-orbitofrontal-cortex-promising-therapeutic-targets-in-psychiatric-illness
#4
REVIEW
Peter Fettes, Laura Schulze, Jonathan Downar
Corticostriatal circuits through the orbitofrontal cortex (OFC) play key roles in complex human behaviors such as evaluation, affect regulation and reward-based decision-making. Importantly, the medial and lateral OFC (mOFC and lOFC) circuits have functionally and anatomically distinct connectivity profiles which differentially contribute to the various aspects of goal-directed behavior. OFC corticostriatal circuits have been consistently implicated across a wide range of psychiatric disorders, including major depressive disorder (MDD), obsessive compulsive disorder (OCD), and substance use disorders (SUDs)...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28436038/direct-current-stimulation-boosts-synaptic-gain-and-cooperativity-in-vitro
#5
Asif Rahman, Belen Lafon, Lucas C Parra, Marom Bikson
KEY POINTS: Direct current stimulation (DCS) polarity specifically modulates synaptic efficacy during a continuous train of presynaptic inputs, despite synaptic depression. DCS polarizes afferent axons and postsynaptic neurons, boosting cooperativity between synaptic inputs. Polarization of afferent neurons in upstream brain regions may modulate activity in the target brain region during transcranial DCS (tDCS). A statistical theory of coincident activity predicts that the diffuse and weak profile of current flow can be advantageous in enhancing connectivity between co-active brain regions...
April 23, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28427306/prefrontal-tdcs-and-sertraline-in-obsessive-compulsive-disorder-a-case-report-and-review-of-the-literature
#6
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/28416160/the-antidepressant-like-effect-of-tdcs-in-mice-a-behavioral-and-neurobiological-characterization
#7
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/28403323/a-critical-review-of-trials-of-transcranial-direct-current-stimulation-and-trigeminal-nerve-stimulation-for-depression-the-issue-of-treatment-emergent-mania
#8
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/28369363/noninvasive-stimulation-of-the-ventromedial-prefrontal-cortex-enhances-pleasant-scene-processing
#9
Markus Junghofer, Constantin Winker, Maimu A Rehbein, Dean Sabatinelli
Depressive patients typically show biased attention towards unpleasant and away from pleasant emotional material. Imaging studies suggest that dysfunctions in a distributed neural network, including the ventromedial prefrontal cortex (vmPFC), are associated with this processing bias. Accordingly, changes in vmPFC activation should mediate changes in processing of emotional stimuli. Here, we investigated the effect of inhibitory and excitatory transcranial direct current stimulation (tDCS) of the vmPFC on emotional scene processing in two within-subject experiments using functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG)...
March 25, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28356641/effect-of-transcranial-direct-current-stimulation-of-stroke-patients-on-depression-and-quality-of-life
#10
Tae-Gyu An, Soo-Han Kim, Ko-Un Kim
[Purpose] The aim of this study was to assess the effects of transcranial direct current stimulation (tDCS) on depression and quality of life (QOL) in patients with stroke, by conducting conventional occupational therapy with and without tDCS on 20 patients each. [Subjects and Methods] The experimental group (N=20) received both tDCS and conventional occupational therapy, while the control group (N=20) received false tDCS and conventional occupational therapy. The treatment was conducted 20 times over a four-week period; each session was 30 minutes long...
March 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28280463/notes-on-human-trials-of-transcranial-direct-current-stimulation-between-1960-and-1998
#11
REVIEW
Zeinab Esmaeilpour, Pedro Schestatsky, Marom Bikson, André R Brunoni, Ada Pellegrinelli, Fernanda X Piovesan, Mariana M S A Santos, Renata B Menezes, Felipe Fregni
Background: Transcranial direct current stimulation (tDCS) is investigated to modulate neuronal function including cognitive neuroscience and neuropsychiatric therapies. While cases of human stimulation with rudimentary batteries date back more than 200 years, clinical trials with current controlled stimulation were published intermittently since the 1960s. The modern era of tDCS only started after 1998. Objectives: To review methods and outcomes of tDCS studies from old literature (between 1960 and 1998) with intention of providing new insight for ongoing tDCS trials and development of tDCS protocols especially for the purpose of treatment...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28269452/predicting-brain-stimulation-treatment-outcomes-of-depressed-patients-through-the-classification-of-eeg-oscillations
#12
Alaa M Al-Kaysi, Ahmed Al-Ani, Colleen K Loo, Michael Breakspear, Tjeerd W Boonstra
Major depressive disorder (MDD) is a mental disorder that is characterized by negative thoughts, mood and behavior. Transcranial direct current stimulation (tDCS) has recently emerged as a promising brain-stimulation treatment for MDD. A standard tDCS treatment involves numerous sessions that run over a few weeks, however, not all participants respond to this type of treatment. This study aims to predict which patients improve in mood and cognition in response to tDCS treatment by analyzing electroencephalography (EEG) of MDD patients that was collected at the start of tDCS treatment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28246891/prefrontal-transcranial-direct-current-stimulation-tdcs-as-treatment-for-major-depression-study-design-and-methodology-of-a-multicenter-triple-blind-randomized-placebo-controlled-trial-depressiondc
#13
Frank Padberg, Ulrike Kumpf, Ulrich Mansmann, Ulrich Palm, Christian Plewnia, Berthold Langguth, Peter Zwanzger, Andreas Fallgatter, Jana Nolden, Max Burger, Daniel Keeser, Rainer Rupprecht, Peter Falkai, Alkomiet Hasan, Silvia Egert, Malek Bajbouj
Transcranial direct current stimulation (tDCS) has been proposed as novel treatment for major depressive disorder (MDD) based on clinical pilot studies as well as randomized controlled monocentric trials. The DepressionDC trial is a triple-blind (blinding of rater, operator and patient), randomized, placebo controlled multicenter trial investigating the efficacy and safety of prefrontal tDCS used as additive treatment in MDD patients who have not responded to selective serotonin reuptake inhibitors (SSRI). At 5 study sites, 152 patients with MDD receive a 6-weeks treatment with active tDCS (anode F3 and cathode F4, 2 mA intensity, 30 min/day) or sham tDCS add-on to a stable antidepressant medication with an SSRI...
February 28, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28229395/transcranial-magnetic-and-direct-current-stimulation-in-children
#14
REVIEW
Mustafa Q Hameed, Sameer C Dhamne, Roman Gersner, Harper L Kaye, Lindsay M Oberman, Alvaro Pascual-Leone, Alexander Rotenberg
Promising results in adult neurologic and psychiatric disorders are driving active research into transcranial brain stimulation techniques, particularly transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS), in childhood and adolescent syndromes. TMS has realistic utility as an experimental tool tested in a range of pediatric neuropathologies such as perinatal stroke, depression, Tourette syndrome, and autism spectrum disorder (ASD). tDCS has also been tested as a treatment for a number of pediatric neurologic conditions, including ASD, attention-deficit/hyperactivity disorder, epilepsy, and cerebral palsy...
February 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28227698/predicting-brain-stimulation-treatment-outcomes-of-depressed-patients-through-the-classification-of-eeg-oscillations
#15
Alaa M Al-Kaysi, Ahmed Al-Ani, Colleen K Loo, Michael Breakspear, Tjeerd W Boonstra, Alaa M Al-Kaysi, Ahmed Al-Ani, Colleen K Loo, Michael Breakspear, Tjeerd W Boonstra, Michael Breakspear, Ahmed Al-Ani, Tjeerd W Boonstra, Colleen K Loo
Major depressive disorder (MDD) is a mental disorder that is characterized by negative thoughts, mood and behavior. Transcranial direct current stimulation (tDCS) has recently emerged as a promising brain-stimulation treatment for MDD. A standard tDCS treatment involves numerous sessions that run over a few weeks, however, not all participants respond to this type of treatment. This study aims to predict which patients improve in mood and cognition in response to tDCS treatment by analyzing electroencephalography (EEG) of MDD patients that was collected at the start of tDCS treatment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28188627/dose-dependency-of-transcranial-direct-current-stimulation-implications-for-neuroplasticity-induction-in-health-and-disease
#16
Mitchell R Goldsworthy, Brenton Hordacre
There has been a rapid growth in the use of non-invasive brain stimulation to induce neuroplasticity and modulate human brain function over the past decade. An example of this is transcranial direct current stimulation (tDCS), which involves the application of weak electrical currents between at least two electrodes placed over the scalp. When applied to the primary motor cortex (M1), tDCS can induce lasting polarity-dependent changes in excitability, with facilitation following anodal stimulation and suppression following cathodal...
February 11, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28126625/transcranial-direct-current-stimulation-enhances-soothing-positive-affect-and-vagal-tone
#17
RANDOMIZED CONTROLLED TRIAL
Nicola Petrocchi, Gianfranco Piccirillo, Claudia Fiorucci, Federica Moscucci, Claudia Di Iorio, Fabiola Mastropietri, Ilaria Parrotta, Matteo Pascucci, Damiano Magrì, Cristina Ottaviani
Transcranial Direct Current Stimulation (tDCS) is a promising tool for the treatment of depression and the dorsolateral prefrontal cortex (dlPFC) is often targeted when exploring tDCS effects on mood. However, the basic effects of tDCS on momentary emotions are inconsistent. We tested whether a single-session of anodal tDCS over the left temporal lobe (T3), topographically closer to the insular cortex than dlPFC, had effects on both vagally-mediated heart rate variability (HRV) and momentary affect in healthy participants...
February 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28119070/non-invasive-brain-stimulation-in-parkinson-s-disease-exploiting-crossroads-of-cognition-and-mood
#18
REVIEW
Lars Dinkelbach, Michela Brambilla, Rosa Manenti, Anna-Katharine Brem
Cognitive impairments and depression are common non-motor manifestations in Parkinson's disease (PD). Recent evidence suggests that both partially arise via the same frontostriatal network, opening the opportunity for concomitant treatment with non-invasive brain stimulation (NIBS) techniques such as repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS). In this systematic review, we evaluate the effects of NIBS on cognition and/or mood in 19 placebo-controlled studies involving 561 PD patients...
April 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28104085/direct-current-stimulation-modulates-ltp-and-ltd-activity-dependence-and-dendritic-effects
#19
Greg Kronberg, Morgan Bridi, Ted Abel, Marom Bikson, Lucas C Parra
BACKGROUND: Transcranial direct current stimulation (tDCS) has been reported to improve various forms of learning in humans. Stimulation is often applied during training, producing lasting enhancements that are specific to the learned task. These learning effects are thought to be mediated by altered synaptic plasticity. However, the effects of DCS during the induction of endogenous synaptic plasticity remain largely unexplored. OBJECTIVE/HYPOTHESIS: Here we are interested in the effects of DCS applied during synaptic plasticity induction...
January 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28064113/cognitive-control-dysfunction-in-emotion-dysregulation-and-psychopathology-of-major-depression-md-evidence-from-transcranial-brain-stimulation-of-the-dorsolateral-prefrontal-cortex-dlpfc
#20
Mohammad Ali Salehinejad, Elham Ghanavai, Reza Rostami, Vahid Nejati
BACKGROUND: Previous studies showed that MD is associated with a variety of cognitive deficits and executive dysfunctions which can persist even in remitted states. However, the role of cognitive impairments in MD psychopathology and treatment is not fully understood. This article aims to discuss how executive functions central components (e.g., Working memory and attention) mediate MD psychopathology considering the role of dorsolateral prefrontal cortex (dLPFC) and present findings of a brain stimulation experiment to support this notion...
March 1, 2017: Journal of Affective Disorders
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