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https://www.readbyqxmd.com/read/28326031/can-neuromodulation-also-enhance-social-inequality-some-possible-indirect-interventions-of-the-state
#1
Andrea Lavazza
There is evidence that noninvasive brain stimulation (NIBS), and especially transcranial direct current stimulation (tDCS), can improve some cognitive functions, at least temporarily. However, as the improvement only applies to some "lucky" people, it may raise ethical, social and legal issues related to fairness in selective contexts (exams, competitions, job interviews). In this regard, an important element tends to be overlooked: the variability in individual response to tDCS in particular. If intensive study or practice and massive doses of chemical enhancers can have slightly different effects over different people, tDCS can sometimes be completely ineffective...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28286676/cerebellar-cathodal-transcranial-direct-stimulation-and-performance-on-a-verb-generation-task-a-replication-study
#2
K Spielmann, R van der Vliet, W M E van de Sandt-Koenderman, M A Frens, G M Ribbers, R W Selles, S van Vugt, J N van der Geest, P Holland
The role of the cerebellum in cognitive processing is increasingly recognized but still poorly understood. A recent study in this field applied cerebellar Transcranial Direct Current Stimulation (c-tDCS) to the right cerebellum to investigate the role of prefrontal-cerebellar loops in language aspects of cognition. Results showed that the improvement in participants' verbal response times on a verb generation task was facilitated immediately after cathodal c-tDCS, compared to anodal or sham c-tDCS. The primary aim of the present study is to replicate these findings and additionally to investigate possible longer term effects...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28280465/activating-developmental-reserve-capacity-via-cognitive-training-or-non-invasive-brain-stimulation-potentials-for-promoting-fronto-parietal-and-hippocampal-striatal-network-functions-in-old-age
#3
REVIEW
Susanne Passow, Franka Thurm, Shu-Chen Li
Existing neurocomputational and empirical data link deficient neuromodulation of the fronto-parietal and hippocampal-striatal circuitries with aging-related increase in processing noise and declines in various cognitive functions. Specifically, the theory of aging neuronal gain control postulates that aging-related suboptimal neuromodulation may attenuate neuronal gain control, which yields computational consequences on reducing the signal-to-noise-ratio of synaptic signal transmission and hampering information processing within and between cortical networks...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28280463/notes-on-human-trials-of-transcranial-direct-current-stimulation-between-1960-and-1998
#4
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/28274831/effects-of-prefrontal-bipolar-and-high-definition-transcranial-direct-current-stimulation-on-cortical-reactivity-and-working-memory-in-healthy-adults
#5
Aron T Hill, Nigel C Rogasch, Paul B Fitzgerald, Kate E Hoy
Transcranial direct current stimulation (tDCS) is a well-recognised neuromodulatory technology which has been shown to induce short-lasting changes in motor-cortical excitability. The recent and rapid expansion of tDCS into the cognitive domain, however, necessitates deeper mechanistic understanding of its neurophysiological effects over non-motor brain regions. The present study utilised transcranial magnetic stimulation combined with electroencephalography (TMS-EEG) to probe the immediate and longer-term effects of both a bipolar (BP-tDCS) and more focal 4×1 High-Definition tDCS (HD-tDCS) montage applied over the left DLPFC on TMS-evoked potentials (TEPs) and oscillations in 19 healthy adult participants...
March 6, 2017: NeuroImage
https://www.readbyqxmd.com/read/28273933/anodal-transcranial-direct-current-stimulation-over-the-left-dorsolateral-prefrontal-cortex-modulates-attention-and-pain-in-fibromyalgia-randomized-clinical-trial
#6
Adriana Ferreira Silva, Maxciel Zortea, Sandra Carvalho, Jorge Leite, Iraci Lucena da Silva Torres, Felipe Fregni, Wolnei Caumo
Cognitive dysfunction in fibromyalgia patients has been reported, especially when increased attentional demands are required. Transcranial direct current stimulation (tDCS) over the dorsolateral prefrontal cortex (DLPFC) has been effective in modulating attention. We tested the effects of a single session of tDCS coupled with a Go/No-go task in modulating three distinct attentional networks: alertness, orienting and executive control. Secondarily, the effect on pain measures was evaluated. Forty females with fibromyalgia were randomized to receive active or sham tDCS...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28269452/predicting-brain-stimulation-treatment-outcomes-of-depressed-patients-through-the-classification-of-eeg-oscillations
#7
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/28253083/individual-differences-and-long-term-consequences-of-tdcs-augmented-cognitive-training
#8
Benjamin Katz, Jacky Au, Martin Buschkuehl, Tessa Abagis, Chelsea Zabel, Susanne M Jaeggi, John Jonides
A great deal of interest surrounds the use of transcranial direct current stimulation (tDCS) to augment cognitive training. However, effects are inconsistent across studies, and meta-analytic evidence is mixed, especially within healthy, young adults. One major source of this inconsistency is individual differences among the participants, but these differences are rarely examined in the context of combined training/stimulation studies. In addition, it is unclear how long the effects of stimulation last, even in successful interventions...
March 2, 2017: Journal of Cognitive Neuroscience
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/28227698/predicting-brain-stimulation-treatment-outcomes-of-depressed-patients-through-the-classification-of-eeg-oscillations
#10
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/28225155/remotely-supervised-transcranial-direct-current-stimulation-increases-the-benefit-of-at-home-cognitive-training-in-multiple-sclerosis
#11
Leigh Charvet, Michael Shaw, Bryan Dobbs, Ariana Frontario, Kathleen Sherman, Marom Bikson, Abhishek Datta, Lauren Krupp, Esmail Zeinapour, Margaret Kasschau
OBJECTIVE: To explore the efficacy of remotely-supervised transcranial direct current stimulation (RS-tDCS) paired with cognitive training (CT) exercise in participants with multiple sclerosis (MS). METHODS: In a feasibility study of RS-tDCS in MS, participants completed ten sessions of tDCS paired with CT (1.5 mA × 20 min, dorsolateral prefrontal cortex montage). RS-tDCS participants were compared to a control group of adults with MS who underwent ten 20-min CT sessions through the same remotely supervised procedures...
February 22, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28210217/transcranial-direct-current-stimulation-over-the-dorsolateral-prefrontal-cortex-in-schizophrenia-a-quantitative-review-of-cognitive-outcomes
#12
REVIEW
Joshua E Mervis, Riley J Capizzi, Elias Boroda, Angus W MacDonald
Cognitive deficits are a core and disabling feature of psychotic disorders, specifically schizophrenia. Current treatments for impaired cognition in schizophrenia remain insufficient. Recent research suggests transcranial direct current stimulation (tDCS) targeting the dorsolateral prefrontal cortex can potentiate cognitive improvements in healthy individuals and those with psychiatric conditions, such as schizophrenia. However, this burgeoning literature has not been quantitatively evaluated. Through a literature search and quantitative review, we identified 194 papers on tDCS, psychosis, and cognition...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28193533/effect-of-dual-mode-and-dual-site-non-invasive-brain-stimulation-on-freezing-of-gait-in-patients-with-parkinson-s-disease
#13
Won Hyuk Chang, Min Soo Kim, Eunhee Park, Jin Whan Cho, Jinyoung Youn, Yun Kwan Kim, Yun-Hee Kim
OBJECTIVE: To investigate the effect of dual-mode non-invasive brain stimulation (NIBS) with high-frequency repetitive transcranial magnetic stimulation (rTMS) over the primary motor cortex of the lower leg and anodal transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex compared with rTMS alone in patients with Parkinson's disease (PD) with freezing of gait (FOG). DESIGN: Randomized, double-blind, controlled study. SETTING: Outpatient rehabilitation clinics...
February 10, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28184424/cognitive-enhancement-induced-by-anodal-tdcs-drives-circuit-specific-cortical-plasticity
#14
Alberto Pisoni, Giulia Mattavelli, Costanza Papagno, Mario Rosanova, Adenauer G Casali, Leonor J Romero Lauro
No abstract text is available yet for this article.
February 10, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28121991/single-session-transcranial-direct-current-stimulation-temporarily-improves-symptoms-mood-and-self-regulatory-control-in-bulimia-nervosa-a-randomised-controlled-trial
#15
Maria Kekic, Jessica McClelland, Savani Bartholdy, Elena Boysen, Peter Musiat, Bethan Dalton, Meyzi Tiza, Anthony S David, Iain C Campbell, Ulrike Schmidt
BACKGROUND: Evidence suggests that pathological eating behaviours in bulimia nervosa (BN) are underpinned by alterations in reward processing and self-regulatory control, and by functional changes in neurocircuitry encompassing the dorsolateral prefrontal cortex (DLPFC). Manipulation of this region with transcranial direct current stimulation (tDCS) may therefore alleviate symptoms of the disorder. OBJECTIVE: This double-blind sham-controlled proof-of-principle trial investigated the effects of bilateral tDCS over the DLPFC in adults with BN...
2017: PloS One
https://www.readbyqxmd.com/read/28119070/non-invasive-brain-stimulation-in-parkinson-s-disease-exploiting-crossroads-of-cognition-and-mood
#16
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/28117378/gender-differences-in-cognitive-theory-of-mind-revealed-by-transcranial-direct-current-stimulation-on-medial-prefrontal-cortex
#17
Mauro Adenzato, Michela Brambilla, Rosa Manenti, Lucia De Lucia, Luigi Trojano, Sara Garofalo, Ivan Enrici, Maria Cotelli
Gender differences in social cognition are a long discussed issue, in particular those concerning Theory of Mind (ToM), i.e., the ability to explain and predict other people's mental states. The aim of this randomized, double-blind, placebo-controlled study was to test the hypothesis that anodal tDCS over the medial prefrontal cortex (mPFC) selectively enhances cognitive ToM performance in females. In the first experiment we administered to sixteen females and sixteen males a cognitive ToM task during anodal or placebo tDCS over the mPFC...
January 24, 2017: Scientific Reports
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
#18
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/28057452/stimulating-cognition-in-schizophrenia-a-controlled-pilot-study-of-the-effects-of-prefrontal-transcranial-direct-current-stimulation-upon-memory-and-learning
#19
Natasza D Orlov, Derek K Tracy, Daniel Joyce, Shinal Patel, Joanna Rodzinka-Pasko, Hayley Dolan, John Hodsoll, Tracy Collier, John Rothwell, Sukhwinder S Shergill
BACKGROUND: Schizophrenia is characterized by prominent cognitive deficits, impacting on memory and learning; these are strongly associated with the prefrontal cortex. OBJECTIVE/HYPOTHESIS: To combine two interventions, transcranial direct current stimulation (tDCS) over the prefrontal cortex and cognitive training, to examine change in cognitive performance in patients with schizophrenia. METHODS: A double blind, sham-controlled pilot study of 49 patients with schizophrenia, randomized into real or sham tDCS stimulation groups...
December 28, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28042984/transcranial-direct-current-stimulation-modulates-offline-visual-oscillatory-activity-a-magnetoencephalography-study
#20
Elizabeth Heinrichs-Graham, Timothy J McDermott, Mackenzie S Mills, Nathan M Coolidge, Tony W Wilson
Transcranial direct-current stimulation (tDCS) is a noninvasive neuromodulatory method that involves delivering low amplitude, direct current to specific regions of the brain. While a wealth of literature shows changes in behavior and cognition following tDCS administration, the underlying neuronal mechanisms remain largely unknown. Neuroimaging studies have generally used fMRI and shown only limited consensus to date, while the few electrophysiological studies have reported mostly null or counterintuitive findings...
March 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
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