keyword
MENU ▼
Read by QxMD icon Read
search

Eeg tdcs

keyword
https://www.readbyqxmd.com/read/29441471/transcranial-direct-current-stimulation-generates-a-transient-increase-of-small-world-in-brain-connectivity-an-eeg-graph-theoretical-analysis
#1
Fabrizio Vecchio, Riccardo Di Iorio, Francesca Miraglia, Giuseppe Granata, Roberto Romanello, Placido Bramanti, Paolo Maria Rossini
Transcranial direct current stimulation (tDCS) is a non-invasive technique able to modulate cortical excitability in a polarity-dependent way. At present, only few studies investigated the effects of tDCS on the modulation of functional connectivity between remote cortical areas. The aim of this study was to investigate-through graph theory analysis-how bipolar tDCS modulate cortical networks high-density EEG recordings were acquired before and after bipolar cathodal, anodal and sham tDCS involving the primary motor and pre-motor cortices of the dominant hemispherein 14 healthy subjects...
February 13, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29429773/left-prefrontal-neuronavigated-electrode-localization-in-tdcs-10-20-eeg-system-versus-mri-guided-neuronavigation
#2
Sara De Witte, Debby Klooster, Josefien Dedoncker, Romain Duprat, Jonathan Remue, Chris Baeken
Transcranial direct current stimulation (tDCS) involves positioning two electrodes at specifically targeted locations on the human scalp. In neuropsychiatric research, the anode is often placed over the left dorsolateral prefrontal cortex (DLPFC), while the cathode is positioned over a contralateral cephalic region above the eye, referred-to as the supraorbital region. Although the 10-20 EEG system is frequently used to locate the DLPFC, due to inter-subject brain variability, this method may lack accuracy...
February 3, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29392156/concurrent-measurement-of-cerebral-hemodynamics-and-electroencephalography-during-transcranial-direct-current-stimulation
#3
Martina Giovannella, David Ibañez, Clara Gregori-Pla, Michal Kacprzak, Guillem Mitjà, Giulio Ruffini, Turgut Durduran
Transcranial direct current stimulation (tDCS) is currently being used for research and treatment of some neurological and neuropsychiatric disorders, as well as for improvement of cognitive functions. In order to better understand cerebral response to the stimulation and to redefine protocols and dosage, its effects must be monitored. To this end, we have used functional diffuse correlation spectroscopy (fDCS) and time-resolved functional near-infrared spectroscopy (TR-fNIRS) together with electroencephalography (EEG) during and after stimulation of the frontal cortex...
January 2018: Neurophotonics
https://www.readbyqxmd.com/read/29361442/effects-of-tdcs-dosage-on-working-memory-in-healthy-participants
#4
Stevan Nikolin, Donel Martin, Colleen K Loo, Tjeerd W Boonstra
BACKGROUND: Transcranial direct current stimulation (tDCS) has been found to improve working memory (WM) performance in healthy participants following a single session. However, results are mixed and the overall effect size is small. Interpretation of these results is confounded by heterogeneous study designs, including differences in tDCS dose (current intensity) and sham conditions used. AIMS: We systematically investigated the effect of tDCS dose on working memory using behavioural and neurophysiological outcomes...
January 8, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29335751/transcranial-direct-current-stimulation-enhances-foot-sole-somatosensation-when-standing-in-older-adults
#5
Junhong Zhou, On-Yee Lo, Lewis A Lipsitz, Jue Zhang, Jing Fang, Brad Manor
Foot-sole somatosensation is critical for safe mobility in older adults. Somatosensation arises when afferent input activates a neural network that includes the primary somatosensory cortex. Transcranial direct current stimulation (tDCS), as a strategy to increase somatosensory cortical excitability, may, therefore, enhance foot-sole somatosensation. We hypothesized that a single session of tDCS would improve foot-sole somatosensation, and thus mobility, in older adults. Twenty healthy older adults completed this randomized, double-blinded, cross-over study consisting of two visits separated by one week...
January 15, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29223708/comparison-of-neuroplastic-responses-to-cathodal-transcranial-direct-current-stimulation-and-continuous-theta-burst-stimulation-in-subacute-stroke
#6
Pierre Nicolo, Cécile Magnin, Elena Pedrazzini, Gijs Plomp, Anaïs Mottaz, Armin Schnider, Adrian G Guggisberg
OBJECTIVE: To investigate the effects of cathodal transcranial direct current stimulation (tDCS) and continuous theta burst stimulation (cTBS) on neural network connectivity and motor recovery in individuals with subacute stroke. DESIGN: Double-blinded, randomized, placebo-controlled study. SETTING: Stroke subjects recruited through a university hospital rehabilitation program. PARTICIPANTS: Stroke inpatients (N=41; mean age 65y, range 28-85; mean weeks poststroke 5, range 2-10) with resultant paresis in the upper extremity (mean Fugl-Meyer score 14, range 3-48)...
December 6, 2017: Archives of Physical Medicine and Rehabilitation
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
#7
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/29180006/modulation-of-electric-brain-responses-evoked-by-pitch-deviants-through-transcranial-direct-current-stimulation
#8
Isabelle Royal, Benjamin Rich Zendel, Marie-Ève Desjardins, Nicolas Robitaille, Isabelle Peretz
Congenital amusia is a neurodevelopmental disorder, characterized by a difficulty detecting pitch deviation that is related to abnormal electrical brain responses. Abnormalities found along the right fronto-temporal pathway between the inferior frontal gyrus (IFG) and the auditory cortex (AC) are the likely neural mechanism responsible for amusia. To investigate the causal role of these regions during the detection of pitch deviants, we applied cathodal (inhibitory) transcranial direct current stimulation (tDCS) over right frontal and right temporal regions during separate testing sessions...
November 24, 2017: Neuropsychologia
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
#9
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/29163341/effects-of-transcranial-direct-current-stimulation-transcranial-pulsed-current-stimulation-and-their-combination-on-brain-oscillations-in-patients-with-chronic-visceral-pain-a-pilot-crossover-randomized-controlled-study
#10
Aurore Thibaut, Cristina Russo, Aura Maria Hurtado-Puerto, Jorge Leon Morales-Quezada, Alícia Deitos, John Christopher Petrozza, Steven Freedman, Felipe Fregni
Objective: Chronic visceral pain (CVP) syndromes are persistently painful disorders with a remarkable lack of effective treatment options. This study aimed at evaluating the effects of different neuromodulation techniques in patients with CVP on cortical activity, through electreocephalography (EEG) and on pain perception, through clinical tests. Design: A pilot crossover randomized controlled study. Settings: Out-patient. Subjects: Adults with CVP (>3 months)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29160761/fronto-parietal-coherence-response-to-tdcs-modulation-in-patients-with-disorders-of-consciousness
#11
Yang Bai, Xiaoyu Xia, Yong Wang, Yongkun Guo, Yi Yang, Jianghong He, Xiaoli Li
A transcranial direct current stimulation (tDCS) protocol (2 min, 2 mA, anodal electrode at the left dorsolateral prefrontal cortex and cathodal electrode at the right supraorbital area) was applied in patients with different degrees of disorders of consciousness (DoC). Although previous research indicates that it could improve patients' coma recovery scale-revised (CRS-R) scores, the brain's electrophysiological responses to tDCS are still unclear. Therefore, the present study was performed to explore the underlying brain responses of patients in a minimally conscious state (MCS) and a Unresponsive Wakefulness Syndrome (UWS) to tDCS modulation...
November 21, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29156988/high-definition-transcranial-direct-current-stimulation-in-early-onset-epileptic-encephalopathy-a-case-study
#12
Oded Meiron, Rena Gale, Julia Namestnic, Odeya Bennet-Back, Jonathan David, Nigel Gebodh, Devin Adair, Zeinab Esmaeilpour, Marom Bikson
PRIMARY OBJECTIVE: Early onset epileptic encephalopathy is characterized by high daily seizure-frequency, multifocal epileptic discharges, severe psychomotor retardation, and death at infancy. Currently, there are no effective treatments to alleviate seizure frequency and high-voltage epileptic discharges in these catastrophic epilepsy cases. The current study examined the safety and feasibility of High-Definition transcranial direct current stimulation (HD-tDCS) in reducing epileptiform activity in a 30-month-old child suffering from early onset epileptic encephalopathy...
2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29019148/modulating-what-is-and-what-could-have-been-the-effect-of-transcranial-direct-current-stimulation-on-the-evaluation-of-attained-and-unattained-decision-outcomes
#13
Mascha van 't Wout, Hannah Silverman
The affective evaluation of decision outcomes, whether attained (e.g., disappointment) or based on the conscious realization that a decision made differently would have led to a better or worse outcome (e.g., regret), greatly influence future decisions. Prior research has demonstrated a role of the medial and orbitofrontal cortex (M/OFC) in decision valuation and the experience of regret and relief. Here we examined whether inhibitory transcranial direct current stimulation (tDCS) could dampen the experience of decision-induced affect, with a focus on regret and relief...
October 10, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28813921/effect-on-the-classification-of-motor-imagery-in-eeg-after-applying-anodal-tdcs-with-a-4%C3%A3-1-ring-montage-over-the-motor-cortex
#14
I N Angulo-Sherman, M Rodriguez-Ugarte, E Ianez, M Ortiz, J M Azorin
Transcranial direct stimulation (tDCS) is a technique for modulating brain excitability that has potential to be used in motor neurorehabilitation by enhancing motor activity, such as motor imagery (MI). tDCS effects depend on different factors, like current density and the position of the stimulating electrodes. This study presents preliminary results of the evaluation of the effect of current density on MI performance by measuring right-hand/feet MI accuracy of classification from electroencephalographic (EEG) measurements after anodal tDCS is applied with a 4×1 ring montage over the right-hand or feet motor cortex...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28729822/low-intensity-focused-tdcs-over-the-motor-cortex-shows-inefficacy-to-improve-motor-imagery-performance
#15
Irma N Angulo-Sherman, Marisol Rodríguez-Ugarte, Eduardo Iáñez, Jose M Azorín
Transcranial direct current stimulation (tDCS) is a brain stimulation technique that can enhance motor activity by stimulating the motor path. Thus, tDCS has the potential of improving the performance of brain-computer interfaces during motor neurorehabilitation. tDCS effects depend on several aspects, including the current density, which usually varies between 0.02 and 0.08 mA/cm(2), and the location of the stimulation electrodes. Hence, testing tDCS montages at several current levels would allow the selection of current parameters for improving stimulation outcomes and the comparison of montages...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28712338/medial-prefrontal-cortex-stimulation-modulates-irony-processing-as-indexed-by-the-n400
#16
Nathalia Ishikawa Baptista, Mirella Manfredi, Paulo Sérgio Boggio
In this study, we investigated whether the ERP responses observed during a verbal irony comprehension task might represent the cortical manifestation of the Medial Prefrontal Cortex (MPFC) activity. We performed a tDCS-EEG study in which we analyzed the effects of tDCS polarities (anode, cathode, sham) over the MPFC during a verbal irony task. We presented visual short stories portraying everyday situations followed by written statements in either an ironic or literal condition, whose meaning was referred to in the previous context...
July 17, 2017: Social Neuroscience
https://www.readbyqxmd.com/read/28702347/tdcs-modulates-cortical-excitability-in-patients-with-disorders-of-consciousness
#17
Yang Bai, Xiaoyu Xia, Jiannan Kang, Yi Yang, Jianghong He, Xiaoli Li
Transcranial direct current stimulation (tDCS) has been reported to be a promising technique for consciousness improvement for patients with disorders of consciousness (DOC). However, there has been no direct electrophysiological evidence to demonstrate the efficacy of tDCS on patients with DOC. Therefore, we aim to measure the cortical excitability changes induced by tDCS in patients with DOC, to find electrophysiological evidence supporting the therapeutic efficacy of tDCS on patients with DOC. In this study, we enrolled sixteen patients with DOC, including nine vegetative state (VS) and seven minimally conscious state (MCS) (six females and ten males)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28676697/a-novel-3d-printed-head-phantom-with-anatomically-realistic-geometry-and-continuously-varying-skull-resistivity-distribution-for-electrical-impedance-tomography
#18
Jie Zhang, Bin Yang, Haoting Li, Feng Fu, Xuetao Shi, Xiuzhen Dong, Meng Dai
Phantom experiments are an important step for testing during the development of new hardware or imaging algorithms for head electrical impedance tomography (EIT) studies. However, due to the sophisticated anatomical geometry and complex resistivity distribution of the human head, constructing an accurate phantom for EIT research remains challenging, especially for skull modelling. In this paper, we designed and fabricated a novel head phantom with anatomically realistic geometry and continuously varying skull resistivity distribution based on 3D printing techniques...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28587498/surface-eeg-transcranial-direct-current-stimulation-tdcs-closed-loop-system
#19
Jorge Leite, Leon Morales-Quezada, Sandra Carvalho, Aurore Thibaut, Deniz Doruk, Chiun-Fan Chen, Steven C Schachter, Alexander Rotenberg, Felipe Fregni
Conventional transcranial direct current stimulation (tDCS) protocols rely on applying electrical current at a fixed intensity and duration without using surrogate markers to direct the interventions. This has led to some mixed results; especially because tDCS induced effects may vary depending on the ongoing level of brain activity. Therefore, the objective of this preliminary study was to assess the feasibility of an EEG-triggered tDCS system based on EEG online analysis of its frequency bands. Six healthy volunteers were randomized to participate in a double-blind sham-controlled crossover design to receive a single session of 10[Formula: see text]min 2[Formula: see text]mA cathodal and sham tDCS...
September 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28530336/-noninvasive-brain-stimulation-in-neuropsychiatric-disorders
#20
REVIEW
Doron Todder, Nimrod Grisaru, Zeev Kaplan
Noninvasive brain stimulation is a growing field of treatment for many neuropsychiatric problems. In this review, several of the more common brain stimulation devices are presented. Specifically, we will review Transcranial Magnetic Stimulation (TMS), Transcranial Direct Current Stimulation (tDCS), Alternating Current Stimulation (ACS), Infrared Stimulation, Electroencephalography Neurofeedback (EEG-NF) and functional Magnetic Resonance Imagining Neurofeedback (fMRI-NF). We will outline some of the properties of these devices including the mechanism, side effect profile, using sham for research and major future developments...
December 2016: Harefuah
keyword
keyword
67718
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"