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https://www.readbyqxmd.com/read/28436038/direct-current-stimulation-boosts-synaptic-gain-and-cooperativity-in-vitro
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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...
January 21, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28104085/direct-current-stimulation-modulates-ltp-and-ltd-activity-dependence-and-dendritic-effects
#15
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
#16
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
https://www.readbyqxmd.com/read/28039551/single-session-transcranial-direct-current-stimulation-induces-enduring-enhancement-of-visual-processing-speed-in-patients-with-major-depression
#17
Nadine Gögler, Lina Willacker, Johanna Funk, Wolfgang Strube, Simon Langgartner, Natan Napiórkowski, Alkomiet Hasan, Kathrin Finke
Attentional deficits are considered key cognitive symptoms in major depressive disorder (MDD) arising from abnormal activation patterns within dorsolateral prefrontal cortex (dlPFC) alertness networks. Altering these activity patterns with transcranial direct current stimulation (tDCS) might thus ameliorate alertness-dependent cognitive deficits in MDD patients. In a double-blind, randomized, sham-controlled study, we investigated the effect of a single session of anodal tDCS (2 mA) applied to the left dlPFC on different parameters of visual attention based on Bundesen's theory of visual attention (Psychol Rev 97(4):523-547, 1990) in a group of 20 patients with MDD and a control group of 20 healthy participants...
December 30, 2016: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/28029427/predicting-tdcs-treatment-outcomes-of-patients-with-major-depressive-disorder-using-automated-eeg-classification
#18
Alaa M Al-Kaysi, Ahmed Al-Ani, Colleen K Loo, Tamara Y Powell, Donel M Martin, Michael Breakspear, Tjeerd W Boonstra
BACKGROUND: Transcranial direct current stimulation (tDCS) is a promising treatment for major depressive disorder (MDD). Standard tDCS treatment involves numerous sessions running over a few weeks. However, not all participants respond to this type of treatment. This study aims to investigate the feasibility of identifying MDD patients that respond to tDCS treatment based on resting-state electroencephalography (EEG) recorded prior to treatment commencing. METHODS: We used machine learning to predict improvement in mood and cognition during tDCS treatment from baseline EEG power spectra...
January 15, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27965597/transcranial-direct-current-stimulation-effects-on-athletes-cognitive-performance-an-exploratory-proof-of-concept-trial
#19
Davimar M M Borducchi, July Silveira Gomes, Henrique Akiba, Quirino Cordeiro, José Henrique M Borducchi, Lívia Stocco Sanches Valentin, Gabrielle M Borducchi, Álvaro Machado Dias
Among the 2016 Olympic and Paralympic Games' unforgettable moments, one could not overlook performances by Phelps and Bolt, which challenge old premises about the maximum extension of individual supremacism in ultracompetitive modalities and the doping scandals. Different media channels resonated these two trends, with an unseen rise on discussions about traits and practices that may set ultrahigh performance athletes apart from the more ordinary ones. Yet, some key issues remain undebated. This paper aims to add to this debate, with a proof of concept trial, which investigates whether transcranial direct current stimulation (tDCS) may serve as an aid for professional athletes...
2016: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/27931886/neurobiological-after-effects-of-non-invasive-brain-stimulation
#20
REVIEW
G Cirillo, G Di Pino, F Capone, F Ranieri, L Florio, V Todisco, G Tedeschi, K Funke, V Di Lazzaro
BACKGROUND: In recent years, many studies have evaluated the effects of noninvasive brain stimulation (NIBS) techniques for the treatment of several neurological and psychiatric disorders. Positive results led to approval of NIBS for some of these conditions by the Food and Drug Administration in the USA. The therapeutic effects of NIBS have been related to bi-directional changes in cortical excitability with the direction of change depending on the choice of stimulation protocol. Although after-effects are mostly short lived, complex neurobiological mechanisms related to changes in synaptic excitability bear the potential to further induce therapy-relevant lasting changes...
January 2017: Brain Stimulation
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