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https://www.readbyqxmd.com/read/29223355/multisession-anodal-transcranial-direct-current-stimulation-induces-motor-cortex-plasticity-enhancement-and-motor-learning-generalization-in-an-aging-population
#1
Gaëlle Dumel, Marie-Ève Bourassa, Camille Charlebois-Plante, Martine Desjardins, Julien Doyon, Dave Saint-Amour, Louis De Beaumont
OBJECTIVES: The present aging study investigated the impact of a multisession anodal-tDCS protocol applied over the primary motor cortex (M1) during motor sequence learning on generalization of motor learning and plasticity-dependent measures of cortical excitability. METHODS: A total of 32 cognitively-intact aging participants performed five consecutive daily 20-min sessions of the serial-reaction time task (SRTT) concomitant with either anodal (n = 16) or sham (n = 16) tDCS over M1...
November 21, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29217996/switching-between-multiple-codes-of-snarc-like-associations-two-conceptual-replication-attempts-with-anodal-tdcs-in-sham-controlled-cross-over-design
#2
Philipp A Schroeder, Hans-Christoph Nuerk, Christian Plewnia
In societies with left-to-right reading direction, left-side vs. right-side behavioral decisions are faster for relatively small vs. large number magnitudes, and vice versa, a phenomenon termed Spatial-Numerical Associations of Response Codes (SNARC) effect. But also for non-numerical sequential items, SNARC-like effects were observed, suggesting a common neurocognitive mechanism based on the ordinal structures of both numbers and sequences. Modulation of prefrontal networks that are involved in providing spatial associations during cognitive behavior can contribute to elaborate their neuropsychological theoretical foundations...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29214483/psychotherapyplus-augmentation-of-cognitive-behavioral-therapy-cbt-with-prefrontal-transcranial-direct-current-stimulation-tdcs-in-major-depressive-disorder-study-design-and-methodology-of-a-multicenter-double-blind-randomized-placebo-controlled-trial
#3
Malek Bajbouj, Sabine Aust, Jan Spies, Ana-Lucia Herrera-Melendez, Sarah V Mayer, Maike Peters, Christian Plewnia, Andreas J Fallgatter, Lukas Frase, Claus Normann, Nora Behler, Linda Wulf, Eva-Lotta Brakemeier, Frank Padberg
Major Depressive Disorder (MDD) is one of the most prevalent psychiatric disorders worldwide. About 20-30% of patients do not respond to the standard psychopharmacological and/or psychotherapeutic interventions. Mounting evidence from neuroimaging studies in MDD patients reveal altered activation patterns in lateral prefrontal brain areas. Successful cognitive behavioral therapy (CBT) is associated with a recovery of these neural alterations. Moreover, it has been demonstrated that transcranial direct current stimulation (tDCS) is capable of influencing prefrontal cortex activity and cognitive functions such as working memory and emotion regulation...
December 6, 2017: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/29213529/therapeutic-effect-of-transcranial-direct-current-stimulation-on-neuropsychological-symptoms-of-an-elderly-patient-a-case-report
#4
Aline Iannone, Joaquim Brasil-Neto, Antonio Pedro Mello Cruz, Corina Satler, Nasser Allam
Although growing evidence points to the potential therapeutic effects of transcranial Direct Current Stimulation (tDCS), there is still no consensus on the most appropriate protocol to be used in specific neurological and neuropsychological symptoms. This case report evaluated the neuromodulatory therapeutic effects of two 15-day courses of tDCS on an elderly female patient, aged 78 years with mild neurocognitive disorder, chronic pain and depression-related symptoms. Results indicated an overall significant improvement of cognitive and executive functions, as well as reduction in both depression and chronic pain symptoms...
July 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29209270/transcranial-direct-current-stimulation-in-patients-with-prolonged-disorders-of-consciousness-combined-behavioral-and-event-related-potential-evidence
#5
Ye Zhang, Weiqun Song, Jubao Du, Su Huo, Guixiang Shan, Ran Li
Background: The electrophysiological evidence supporting the therapeutic efficacy of multiple transcranial direct current stimulation (tDCS) sessions on consciousness improvement in patients with prolonged disorders of consciousness (DOCs) has not been firmly established. Objectives: To assess the effects of repeated tDCS in patients with prolonged DOCs by Coma Recovery Scale-Revised (CRS-R) score and event-related potential (ERP). Method: Using a sham-controlled randomized double-blind design, 26 patients were randomly assigned to either a real [five vegetative state (VS) and eight minimally conscious state (MCS) patients] or sham (six VS and seven MCS patients) stimulation group...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29209179/effect-of-transcranial-direct-current-stimulation-of-the-medial-prefrontal-cortex-on-the-gratitude-of-individuals-with-heterogeneous-ability-in-an-experimental-labor-market
#6
Pengcheng Wang, Guangrong Wang, Xiaofei Niu, Huiliang Shang, Jianbiao Li
Gratitude is an important aspect of human sociality, which benefits mental health and interpersonal relationships. Thus, elucidating the neural mechanism of gratitude, which is only now beginning to be investigated, is important. To this end, this study specifies the medial prefrontal cortex (mPFC) involved in the gratitude of heterogeneous individuals using the transcranial direct current stimulation (tDCS) technique. Previous neural studies have shown the involvement of mPFC in social cognition and value evaluation, which are closely related to gratitude...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29202318/single-session-tdcs-over-the-left-dlpfc-disrupts-interference-processing
#7
Christian Frings, Thorsten Brinkmann, Maximilian A Friehs, Tim van Lipzig
Whether single session tDCS can impact upon cognition in healthy subjects is currently a heated debate against the background of inconsistent results. In view of the current methodological discussion concerning tDCS we developed an alternative approach to measure effects of single session tDCS on the Stroop task. The left DLPFC was stimulated in a pre-post design using a new electrode set-up (a 9 cm2 electrode was placed over the left DLPFC while a 35 cm2 was placed over the parieto-occipital cortex) contrasting anodal versus cathodal stimulation...
December 1, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/29200573/neural-effects-of-transcranial-direct-current-stimulation-in-schizophrenia-a-case-study-using-functional-near-infrared-spectroscopy
#8
S Trevor Taylor, Harleen Chhabra, Vanteemar S Sreeraj, Venkataram Shivakumar, Sunil V Kalmady, Ganesan Venkatasubramanian
Schizophrenia is a severe neuropsychiatric disorder characterized by delusions, hallucinations, behavioral symptoms, and cognitive deficits. Roughly, 70%-80% of schizophrenia patients experience auditory verbal hallucinations (AVHs), with 25%-30% demonstrating resistance to conventional antipsychotic medications. Studies suggest a promising role for add-on transcranial direct current stimulation (tDCS) in the treatment of medication-refractory AVHs. The mechanisms through which tDCS could be therapeutic in such cases are unclear, but possibly involve neuroplastic effects...
September 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/29180969/effect-of-transcranial-direct-current-stimulation-on-functional-capacity-in-schizophrenia-a-study-protocol-for-a-randomized-controlled-trial
#9
Zui Narita, Takuma Inagawa, Kazushi Maruo, Kazuki Sueyoshi, Tomiki Sumiyoshi
Schizophrenia patients elicit a wide range of psychopathology, including psychotic symptoms, mood symptoms, and cognitive impairment. Functional capacity is defined as the ability to perform everyday living skills, which is linked to cognition and real-world functional outcome. In a previous open trial, we demonstrated that transcranial direct current stimulation (tDCS), one of the neuromodulation methods, improved cognition and functional capacity in 28 patients with schizophrenia. However, since it was a pilot study, a controlled trial is needed...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29177817/modulation-of-dual-task-control-with-right-prefrontal-transcranial-direct-current-stimulation-tdcs
#10
Tilo Strobach, Daria Antonenko, Maral Abbarin, Malvin Escher, Agnes Flöel, Torsten Schubert
Executive functioning of two simultaneous component tasks in dual-task situations is primarily associated with activation of the lateral prefrontal cortex (PFC), as demonstrated in functional imaging studies. However, the precise role of the lateral PFC and the causal relation between this area's activity and executive functioning in dual tasks has exclusively been demonstrated for the left lateral PFC so far. To investigate this relation for the right lateral PFC, we used anodal transcranial direct current stimulation (atDCS; 1 mA, 20 min) in contrast to sham stimulation (1 mA, 30 s) in Experiment 1 (N = 30) as well as cathodal transcranial direct current stimulation (ctDCS; 1 mA, 20 min) in contrast to sham stimulation (1 mA, 30 s) in Experiment 2 (N = 25) over the right inferior frontal junction under conditions of random task order in dual tasks; random dual tasks require decisions on task order and thus high demands on executive functioning...
November 25, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29172010/extended-multiple-field-high-definition-transcranial-direct-current-stimulation-hd-tdcs-is-well-tolerated-and-safe-in-healthy-adults
#11
Christopher A Turski, Alanna Kessler-Jones, Clara Chow, Bruce Hermann, David Hsu, Jana Jones, Susanne K Seeger, Rick Chappell, Melanie Boly, Chrysanthy Ikonomidou
BACKGROUND: High definition transcranial direct current stimulation (HD-tDCS) has been administered over single brain regions for small numbers of sessions. Safety, feasibility and tolerability of HD-tDCS over multiple brain regions, multiple daily stimulations and long periods are not established. OBJECTIVE: We studied safety, feasibility and tolerability of daily HD-tDCS over 2-4 brain regions for 20 sessions in healthy adults. METHODS: Five healthy adults underwent physical and neurological examination, electrocardiogram (EKG), electroencephalogram (EEG) and cognitive screening (ImpACT) before, during and after HD-tDCS...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29171414/non-invasive-electrical-brain-stimulation-from-acute-to-late-stage-treatment-of-central-nervous-system-damage
#12
REVIEW
Petra Henrich-Noack, Elena G Sergeeva, Bernhard A Sabel
Non-invasive brain current stimulation (NIBS) is a promising and versatile tool for inducing neuroplasticity, protection and functional rehabilitation of damaged neuronal systems. It is technically simple, requires no surgery, and has significant beneficial effects. However, there are various technical approaches for NIBS which influence neuronal networks in significantly different ways. Transcranial direct current stimulation (tDCS), alternating current stimulation (ACS) and repetitive transcranial magnetic stimulation (rTMS) all have been applied to modulate brain activity in animal experiments under normal and pathological conditions...
October 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29163115/anodal-tdcs-enhances-verbal-episodic-memory-in-initially-low-performers
#13
Annegret Habich, Stefan Klöppel, Ahmed Abdulkadir, Elisa Scheller, Christoph Nissen, Jessica Peter
The left dorsolateral prefrontal cortex (DLPFC) is involved in encoding and retrieval of episodic memories, and thus, is frequently targeted in non-invasive brain stimulation paradigms, aiming for its functional modulation. Anodal transcranial direct current stimulation (tDCS), that boosts neuronal excitability in stimulated cortical areas, has been found to increase cognitive skills differentially, depending on the initial performance. We hypothesize that the benefit of tDCS on verbal episodic memory can be extrapolated from the participants' baseline performance...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29160331/primum-non-nocere-or-primum-facere-meliorem-hacking-the-brain-in-the-21st-century
#14
Lucas Borrione, Andre R Brunoni
Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that modulates cortical excitability. It is devoid of serious adverse events and exerts variable effects on cognition, with several research findings suggesting that it can improve memory, verbal and mathematical skills. Because tDCS devices are low-cost, portable and relatively easy to assemble, they have become available outside of the medical setting and used for non-medical ("cosmetic") purposes by laypersons. In this sense, tDCS has become a popular technique aiming to improve cognition and the achievement of a better performance not only at work, but also in other fields such as sports, leisure activities (video games) and even the military...
November 13, 2017: Trends in Psychiatry and Psychotherapy
https://www.readbyqxmd.com/read/29154939/hypothesis-for-cognitive-effects-of-transcranial-direct-current-stimulation-externally-and-internally-directed-cognition
#15
REVIEW
Pamela M Greenwood, Eric J Blumberg, Melissa R Scheldrup
A comprehensive explanation is lacking for the broad array of cognitive effects modulated by transcranial direct current stimulation (tDCS). We advanced the testable hypothesis that tDCS to the default mode network (DMN) increases processing of goals and stored information at the expense of external events. We further hypothesized that tDCS to the dorsal attention network (DAN) increases processing of external events at the expense of goals and stored information. A literature search (PsychINFO) identified 42 empirical studies and 3 meta-analyses examining effects of prefrontal and/or parietal tDCS on tasks that selectively required external and/or internal processing...
November 15, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29113929/interaction-of-the-left-dorsolateral-prefrontal-cortex-l-dlpfc-and-right-orbitofrontal-cortex-ofc-in-hot-and-cold-executive-functions-evidence-from-transcranial-direct-current-stimulation-tdcs
#16
Vahid Nejati, Mohammad Ali Salehinejad, Michael A Nitsche
An organizing principle which has recently emerged proposes that executive functions (EF) can be divided into cognitive (cold) and affective or reward-related (hot) processes related to the dorsolateral prefrontal cortex (DLPFC) and orbitofrontal cortex (OFC) respectively. A controversial question is whether cold and hot EF are functionally and structurally independent or not. This study investigated how the left DLPFC (l-DLPFC) and right OFC (r-OFC) interact in hot and cold EF using transcranial direct current stimulation (tDCS)...
November 4, 2017: Neuroscience
https://www.readbyqxmd.com/read/29101842/the-effect-of-transcranial-direct-current-stimulation-of-the-prefrontal-cortex-on-implicit-self-esteem-is-mediated-by-rumination-after-criticism
#17
Rudi De Raedt, Jonathan Remue, Tom Loeys, Jill M Hooley, Chris Baeken
It has been proposed that a crucial link between cognitive (i.e., self-schemas) and biological vulnerability is prefrontal control. This is because decreased control leads to impaired ability to inhibit ruminative thinking after the activation of negative self-schemas. However, current evidence is mainly correlational. In the current experimental study we tested whether the effect of neurostimulation of the dorsolateral prefrontal cortex (DLPFC) on self-esteem is mediated by momentary ruminative self-referential thinking (MRST) after the induction of negative self-schemas by criticism...
October 21, 2017: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/29077133/-non-invasive-brain-stimulation-techniques-in-psychiatric-disorders-influential-factors-and-combination-of-interventions
#18
M -A Vanderhasselt, J Dedoncker, M Arns, C Baeken
BACKGROUND: The causal influence of cortico-subcortical connectivity by means of brain stimulation seems to be an effective biological treatment in psychiatric patients. AIM: To review the working mechanisms and moderating factors of two non-invasive brain stimulation techniques (NIBS), namely repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS). METHOD: We reviewed the current literature on the use of nibs in neuropsychiatric disorders...
2017: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/29067352/combined-mnemonic-strategy-training-and-high-definition-transcranial-direct-current-stimulation-for-memory-deficits-in-mild-cognitive-impairment
#19
Benjamin M Hampstead, Krishnankutty Sathian, Marom Bikson, Anthony Y Stringer
INTRODUCTION: Memory deficits characterize Alzheimer's dementia and the clinical precursor stage known as mild cognitive impairment. Nonpharmacologic interventions hold promise for enhancing functioning in these patients, potentially delaying functional impairment that denotes transition to dementia. Previous findings revealed that mnemonic strategy training (MST) enhances long-term retention of trained stimuli and is accompanied by increased blood oxygen level-dependent signal in the lateral frontal and parietal cortices as well as in the hippocampus...
September 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/29067331/inferior-parietal-transcranial-direct-current-stimulation-with-training-improves-cognition-in-anomic-alzheimer-s-disease-and-frontotemporal-dementia
#20
Carlos Roncero, Heike Kniefel, Erik Service, Alexander Thiel, Stephan Probst, Howard Chertkow
INTRODUCTION: We evaluated whether transcranial direct current stimulation (tDCS) can improve picture-naming abilities in subjects with anomic Alzheimer or frontotemporal dementias. METHODS: Using a double-blind crossover design, 10 participants were trained on picture naming over a series of 10 sessions with either 30 minutes of anodal (2 mA) tDCS stimulation to the left inferior parieto-temporal region (P3) or sham stimulation. We evaluated performance on a trained picture-naming list, an equivalent untrained list, and additional neuropsychological tasks...
June 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
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