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https://www.readbyqxmd.com/read/28334214/tdcs-modulates-visual-gamma-oscillations-and-basal-alpha-activity-in-occipital-cortices-evidence-from-meg
#1
Tony W Wilson, Timothy J McDermott, Mackenzie S Mills, Nathan M Coolidge, Elizabeth Heinrichs-Graham
Transcranial direct-current stimulation (tDCS) is now a widely used method for modulating the human brain, but the resulting physiological effects are not understood. Recent studies have combined magnetoencephalography (MEG) with simultaneous tDCS to evaluate online changes in occipital alpha and gamma oscillations, but no study to date has quantified the offline (i.e., after tDCS) alterations in these responses. Thirty-five healthy adults received active or sham anodal tDCS to the occipital cortices, and then completed a visual stimulation paradigm during MEG that is known to elicit robust gamma and alpha oscillations...
March 10, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28334143/boosting-and-decreasing-action-prediction-abilities-through-excitatory-and-inhibitory-tdcs-of-inferior-frontal-cortex
#2
Alessio Avenanti, Riccardo Paracampo, Laura Annella, Emmanuele Tidoni, Salvatore Maria Aglioti
Influential theories suggest that humans predict others' upcoming actions by using their own motor system as an internal forward model. However, evidence that the motor system is causally essential for predicting others' actions is meager. Using transcranial direct current stimulation (tDCS), we tested the role of the inferior frontal cortex (IFC), in action prediction (AP). We devised a novel AP task where participants observed the initial phases of right-hand reaching-to-grasp actions and had to predict their outcome (i...
March 14, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28316589/a-postural-tremor-highly-responsive-to-transcranial-cerebello-cerebral-dcs-in-arca3
#3
Florian Bodranghien, Nordeyn Oulad Ben Taib, Lionel Van Maldergem, Mario Manto
BACKGROUND AND OBJECTIVES: Cerebellar ataxias are disabling disorders that impact the quality of life of patients. In many cases, an effective treatment is missing. Despite the increasing knowledge on the pathogenesis of cerebellar disorders including genetic aspects, there is currently a gap in the therapeutical management of cerebellar deficits. Cerebellar ataxia associated with ANO10 mutation (ARCA3) presents a disabling cerebellar syndrome. The aim of this study is to report a patient with a marked postural tremor responding to transcranial cerebello-cerebral direct current stimulation (tCCDCS)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28314813/tdcs-induced-modulation-of-gaba-levels-and-resting-state-functional-connectivity-in-older-adults
#4
Daria Antonenko, Florian Schubert, Florian Bohm, Bernd Ittermann, Semiha Aydin, Dayana Hayek, Ulrike Grittner, Agnes Flöel
Transcranial direct current stimulation (tDCS) modulates human behavior, neuronal patterns and metabolite concentrations, with exciting potential for neurorehabilitation. However, the understanding of tDCS-induced alterations on the neuronal level is incomplete and conclusions from young adults, in whom the majority of studies have been conducted, cannot be easily transferred to older populations. Here, we investigated tDCS-induced effects in older adults (N=48, age range 50-79 years) using magnetic resonance spectroscopy to quantify gamma-aminobutyric acid (GABA) levels as well as resting-state functional magnetic resonance imaging to assess sensorimotor network strength and inter-hemispheric connectivity...
March 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28302387/efficacy-of-transcranial-direct-current-stimulation-in-women-with-provoked-vestibulodynia
#5
Annie Morin, Guillaume Leonard, Véronique Gougeon, Marie-Pierre Cyr, Guy Waddell, Yves-André Bureau, Isabelle Girard, Mélanie Morin
BACKGROUND: Provoked vestibulodynia is a highly prevalent condition characterized by acute recurrent pain located at the vaginal entrance in response to pressure application or attempted vaginal penetration. Despite a wide variety of treatments offered to women with provoked vestibulodynia, a high proportion of women are refractory to conventional treatment. Transcranial direct-current stimulation is a non-invasive brain stimulation technique that has been shown effective for improving various chronic pain conditions...
March 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28299412/tdcs-application-over-the-stg-improves-the-ability-to-recognize-and-appreciate-elements-involved-in-humor-processing
#6
Mirella Manfredi, Alice Mado Proverbio, Ana Paula Gonçalves Donate, Sofia Macarini Gonçalves Vieira, William Edgar Comfort, Mariana De Araújo Andreoli, Paulo Sérgio Boggio
The superior temporal gyrus (STG) has been found to play a crucial role in the recognition of actions and facial expressions and may, therefore, be critical for the processing of humorous information. Here we investigated whether tDCS application to the STG would modulate the ability to recognize and appreciate the comic element in serious and comedic situations of misfortune. To this aim, the effects of different types of tDCS stimulation on the STG were analyzed during a task in which the participants were instructed to categorize various misfortunate situations as "comic" or "not comic"...
March 15, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28298304/no-consistent-effect-of-cerebellar-transcranial-direct-current-stimulation-tdcs-on-visuomotor-adaptation
#7
Roya Jalali, R Christopher Miall, Joseph M Galea
Cerebellar transcranial direct current stimulation (ctDCS) is known to enhance adaptation to a novel visual rotation (visuomotor adaptation) and it is suggested to hold promise as a therapeutic intervention. However, it is unknown whether this effect is robust across varying task parameters. This question is crucial if ctDCS is to be used clinically, as it must have a consistent and robust effect across a relatively wide range of behaviours. The aim of this study was to examine the effect of ctDCS on visuomotor adaptation across a wide range of task parameters which were systematically varied...
March 15, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28294474/modulating-risky-decision-making-in-parkinson-s-disease-by-transcranial-direct-current-stimulation
#8
A Benussi, A Alberici, V Cantoni, R Manenti, M Brambilla, V Dell'Era, S Gazzina, M Manes, V Cristillo, A Padovani, M Cotelli, B Borroni
BACKGROUND AND PURPOSE: Performance on gambling tasks in Parkinson's disease (PD) is of particular interest, as pathological gambling is often associated with dopamine replacement therapy in these patients. We aimed to evaluate the effects of transcranial direct current stimulation (tDCS) over the right dorsolateral prefrontal cortex (DLPFC) in modulating gambling behaviour in PD. METHODS: We assessed the effects of cathodal tDCS over the right DLPFC during the Iowa Gambling Task in 20 patients with PD, compared with sham stimulation...
March 15, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28286676/cerebellar-cathodal-transcranial-direct-stimulation-and-performance-on-a-verb-generation-task-a-replication-study
#9
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/28282844/transcranial-direct-current-stimulation-in%C3%A2-individuals-with-spinal-cord-injury-assessment-of-autonomic-nervous-system-activity
#10
Fabiana Tenório Gomes da Silva, Rodrigo Alberto Vieira Browne, Camila Bonin Pinto, Faddi Ghassan Saleh Velez, Eryvaldo Sócrates Tabosa do Egito, Jeferson Tafarel Pereira do Rêgo, Marília Rodrigues da Silva, Paulo Moreira Silva Dantas, Felipe Fregni
BACKGROUND: We hypothesized in this study that transcranial direct current stimulation (tDCS) of primary motor cortex could exert top-down modulation over subcortical systems associated with autonomic control and thus be useful to revert some of the dysfunctional changes found in the autonomic nervous system (ANS) of subjects with spinal cord injuries (SCI). OBJECTIVE: To explore the acute effect of tDCS on ANS indexed by Heart Rate Variability (HRV) in individuals with SCI and analyze whether this effect depends on the gender, degree, level and time of injury...
March 9, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28278354/online-and-offline-effects-of-cerebellar-transcranial-direct-current-stimulation-on-motor-learning-in-healthy-older-adults-a-randomized-double-blind-sham-controlled-study
#11
Afshin Samaei, Fatemeh Ehsani, Maryam Zoghi, Mohaddese Hafez Yosephi, Shapour Jaberzadeh
The aim of this randomized double blinded sham-controlled study was to determine the effect of cerebellar anodal transcranial direct current stimulation (a-tDCS) on online and offline motor learning in healthy older individuals. Thirty participants were randomly assigned in experimental (n=15) or sham tDCS (n=15) groups. Participants in experimental group received 2 mA cerebellar a-tDCS for 20 minutes. However, the tDCS was turned off after 30 seconds in sham group. Response time (RT) and error rate (ER) in serial response time test were assessed before, during 35 minutes and 48 hours after the intervention...
March 9, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28276838/modulation-of-prefrontal-cortex-with-anodal-tdcs-prevents-post-exercise-facilitation-interference-during-dual-task
#12
Carmen Concerto, Jacqueline Babayev, Rowan Mahmoud, Basil Rafiq, Eileen Chusid, Eugenio Aguglia, Diego Coira, Fortunato Battaglia
In this study we aimed to investigate whether transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex (DLPFC) reduces interference effects of a dual task (DT) on post-exercise facilitation (PEF) of the motor evoked potentials. Anodal tDCS reversed the DT interference on PEF after a non-fatiguing isometric contraction. We conclude that anodal DLPFC tDCS improves the ability to allocate attentional resources and modulates plastic adaptations across brain systems.
February 28, 2017: Somatosensory & Motor Research
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
#13
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/28274118/in-situ-atomic-scale-observation-of-electrochemical-delithiation-induced-structure-evolution-of-licoo2-cathode-in-a-working-all-solid-state-battery
#14
Yue Gong, Jie-Nan Zhang, Liwei Jiang, Jin-An Shi, Qinghua Zhang, Zhenzhong Yang, Dongli Zou, Jiangyong Wang, Xiqian Yu, Ruijuan Xiao, Yong-Sheng Hu, Lin Gu, Hong Li, Liquan Chen
We report a method for in situ atomic-scale observation of electrochemical delithiation in a working all-solid-state battery using a state-of-the-art chip based in-situ TEM holder and focused ion beam milling to prepare an all-solid-state lithium ion battery sample. A battery consisting of LiCoO2 cathode, LLZO solid state electrolyte and gold anode was constructed, delithiated and observed in an aberration corrected scanning transmission electron microscope at atomic scale. We found that the pristine single crystal LiCoO2 became nano-sized poly crystal connected by coherent twin boundaries and antiphase domain boundaries after high voltage delithiation...
March 8, 2017: Journal of the American Chemical Society
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
#15
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/28270785/whether-modulating-the-activity-of-the-temporalparietal-junction-alters-distribution-decisions-within-different-contexts-evidence-from-a-tdcs-study
#16
Jun Luo, Shu Chen, Daqiang Huang, Hang Ye, Haoli Zheng
Distributive justice concerns how individuals and societies distribute income in a just or equal manner. We aimed to test the roles of social preference in behavioral distributive justice. We thus provide evidence of a causal link between the neural and behavioral results through the application of bilateral transcranial direct current stimulation (tDCS) over the temporoparietal junction (TPJ) of our participants. The participants were found to make fairer distributions within the known position after receiving right anodal/left cathodal tDCS and receiving right cathodal/left anodal tDCS over the TPJ than the participants who received the sham stimulation...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28269450/oscillatory-brain-activity-changes-by-anodal-tdcs-an-ecog-study-on-anesthetized-beagles
#17
Sehyeon Jang, Donghyeon Kim, Junkil Been, Hohyun Cho, Sung Chan Jun
Measuring neuronal activity of transcranial direct current stimulation (tDCS) is essential for investigating tDCS in stimuli or after stimuli effects. The aim of this study was to investigate the oscillatory changes from anodal tDCS using electrocorticography (ECoG) on beagles. We applied 2 mA anodal tDCS and monitored the ECoG signals (32 channels, 512 Hz sampling rate) for 15 minutes in three anesthetized beagles. Then, we compared the power changes before, during, and after tDCS in six different bands (delta, theta, alpha, beta, low-gamma, and mid-gamma bands)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269447/using-bioimpedance-spectroscopy-parameters-as-real-time-feedback-during-tdcs
#18
Isar Nejadgholi, Herschel Caytak, Miodrag Bolic
An exploratory analysis is carried out to investigate the feasibility of using BioImpedance Spectroscopy (BIS) parameters, measured on scalp, as real-time feedback during Transcranial Direct Current Stimulation (tDCS). TDCS is shown to be a potential treatment for neurological disorders. However, this technique is not considered as a reliable clinical treatment, due to the lack of a measurable indicator of treatment efficacy. Although the voltage that is applied on the head is very simple to measure during a tDCS session, changes of voltage are difficult to interpret in terms of variables that affect clinical outcome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268675/effects-of-prefrontal-anodal-transcranial-direct-current-stimulation-on-working-memory-and-reaction-time
#19
Ines S Verissimo, Isabel M Barradas, Tiago T Santos, Pedro C Miranda, Hugo A Ferreira
Transcranial direct current stimulation (tDCS) has proven to be a useful tool in the scientific research community, particularly for clinical investigation purposes. Neuroimaging studies indicate that there is a connection between the prefrontal cortex (PFC) and working memory (WM), as well as between the primary motor cortex and reaction time (RT). Thus, our goal was to evaluate the effect of anodal stimulation of the PFC, with respect to WM and RT. We tested 20 healthy subjects randomized into two groups - half received active stimulation and the other half sham stimulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263998/effector-independent-reduction-in-choice-reaction-time-following-bi-hemispheric-transcranial-direct-current-stimulation-over-motor-cortex
#20
Neil M Drummond, Gabrielle Hayduk-Costa, Alexandra Leguerrier, Anthony N Carlsen
Increased reaction times (RT) during choice-RT tasks stem from a requirement for additional processing as well as reduced motor-specific preparatory activation. Transcranial direct current stimulation (tDCS) can modulate primary motor cortex excitability, increasing (anodal stimulation) or decreasing (cathodal stimulation) excitability in underlying cortical tissue. The present study investigated whether lateralized differences in choice-RT would result from the concurrent modulation of left and right motor cortices using bi-hemispheric tDCS...
2017: PloS One
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