keyword
MENU ▼
Read by QxMD icon Read
search

Transcranial alternating current stimulation

keyword
https://www.readbyqxmd.com/read/29435084/mitigation-of-stress-new-treatment-alternatives
#1
REVIEW
Ahmad Rauf Subhani, Nidal Kamel, Mohamad Naufal Mohamad Saad, Nanda Nandagopal, Kenneth Kang, Aamir Saeed Malik
Complaints of stress are common in modern life. Psychological stress is a major cause of lifestyle-related issues, contributing to poor quality of life. Chronic stress impedes brain function, causing impairment of many executive functions, including working memory, decision making and attentional control. The current study sought to describe newly developed stress mitigation techniques, and their influence on autonomic and endocrine functions. The literature search revealed that the most frequently studied technique for stress mitigation was biofeedback (BFB)...
February 2018: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/29427848/targeting-alpha-band-oscillations-in-a-cortical-model-with-amplitude-modulated-high-frequency-transcranial-electric-stimulation
#2
Ehsan Negahbani, Florian H Kasten, Christoph S Herrmann, Flavio Frohlich
Non-invasive brain stimulation to target specific network activity patterns, e.g. transcranial alternating current stimulation (tACS), has become an essential tool to understand the causal role of neuronal oscillations in cognition and behavior. However, conventional sinusoidal tACS limits the ability to record neuronal activity during stimulation and lacks spatial focality. One particularly promising new tACS stimulation paradigm uses amplitude-modulated (AM) high-frequency waveforms (AM-tACS) with a slow signal envelope that may overcome the limitations...
February 7, 2018: NeuroImage
https://www.readbyqxmd.com/read/29414579/molecular-and-elemental-effects-underlying-the-biochemical-action-of-transcranial-direct-current-stimulation-tdcs-in-appetite-control
#3
Artur D Surowka, Agata Ziomber, Mateusz Czyzycki, Alessandro Migliori, Kaja Kasper, Magdalena Szczerbowska-Boruchowska
Recent studies highlight that obesity may alter the electric activity in brain areas triggering appetite and craving. Transcranial direct current brain stimulation (tDCS) has recently emerged as a safe alternative for treating food addiction via modulating cortical excitability without any high-risk surgical procedure to be utilized. As for anodal-type tDCS (atDCS), we observe increased excitability and spontaneous firing of the cortical neurons, whilst for the cathodal-type tDCS (ctDCS) a significant decrease is induced...
January 31, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29398575/rigor-and-reproducibility-in-research-with-transcranial-electrical-stimulation-an-nimh-sponsored-workshop
#4
REVIEW
Marom Bikson, Andre R Brunoni, Leigh E Charvet, Vincent P Clark, Leonardo G Cohen, Zhi-De Deng, Jacek Dmochowski, Dylan J Edwards, Flavio Frohlich, Emily S Kappenman, Kelvin O Lim, Colleen Loo, Antonio Mantovani, David P McMullen, Lucas C Parra, Michele Pearson, Jessica D Richardson, Judith M Rumsey, Pejman Sehatpour, David Sommers, Gozde Unal, Eric M Wassermann, Adam J Woods, Sarah H Lisanby
BACKGROUND: Neuropsychiatric disorders are a leading source of disability and require novel treatments that target mechanisms of disease. As such disorders are thought to result from aberrant neuronal circuit activity, neuromodulation approaches are of increasing interest given their potential for manipulating circuits directly. Low intensity transcranial electrical stimulation (tES) with direct currents (transcranial direct current stimulation, tDCS) or alternating currents (transcranial alternating current stimulation, tACS) represent novel, safe, well-tolerated, and relatively inexpensive putative treatment modalities...
December 29, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29389051/frequency-dependent-tacs-modulation-of-bold-signal-during-rhythmic-visual-stimulation
#5
Yuhui Chai, Jingwei Sheng, Peter A Bandettini, Jia-Hong Gao
Transcranial alternating current stimulation (tACS) has emerged as a promising tool for modulating cortical oscillations. In previous electroencephalogram (EEG) studies, tACS has been found to modulate brain oscillatory activity in a frequency-specific manner. However, the spatial distribution and hemodynamic response for this modulation remains poorly understood. Functional magnetic resonance imaging (fMRI) has the advantage of measuring neuronal activity in regions not only below the tACS electrodes but also across the whole brain with high spatial resolution...
February 1, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29380294/reduction-of-implicit-cognitive-bias-with-cathodal-tdcs-to-the-left-prefrontal-cortex
#6
Philipp Alexander Schroeder, Hans-Christoph Nuerk, Christian Plewnia
Implicit associations can interfere with cognitive operations and behavioral decisions without direct intention. Enhancement of neural activity with anodal transcranial direct current stimulation (tDCS) was proposed to reduce implicit associations by means of improved cognitive control. However, a targeted reduction of distractive implicit associations by inhibitory cathodal tDCS, recently shown in spatial-numerical associations, provides an interesting alternative approach to support goal-directed behavior with transcranial brain stimulation...
January 29, 2018: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/29379865/transcranial-alternating-current-stimulation-modulates-risky-decision-making-in-a-frequency-controlled-experiment
#7
Zachary Yaple, Mario Martinez-Saito, Matteo Feurra, Anna Shestakova, Vasily Klucharev
In this study, we investigated the effect of transcranial alternating current stimulation (tACS) on voluntary risky decision making and executive control in humans. Stimulation was delivered online at 5 Hz (θ), 10 Hz (α), 20 Hz (β), and 40 Hz (γ) on the left and right frontal area while participants performed a modified risky decision-making task. This task allowed participants to voluntarily select between risky and certain decisions associated with potential gains or losses, while simultaneously measuring the cognitive control component (voluntary switching) of decision making...
November 2017: ENeuro
https://www.readbyqxmd.com/read/29358073/phase-entrainment-of-brain-oscillations-causally-modulates-neural-responses-to-intelligible-speech
#8
Benedikt Zoefel, Alan Archer-Boyd, Matthew H Davis
Due to their periodic nature, neural oscillations might represent an optimal "tool" for the processing of rhythmic stimulus input [1-3]. Indeed, the alignment of neural oscillations to a rhythmic stimulus, often termed phase entrainment, has been repeatedly demonstrated [4-7]. Phase entrainment is central to current theories of speech processing [8-10] and has been associated with successful speech comprehension [11-17]. However, typical manipulations that reduce speech intelligibility (e.g., addition of noise and time reversal [11, 12, 14, 16, 17]) could destroy critical acoustic cues for entrainment (such as "acoustic edges" [7])...
January 11, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29355765/transcranial-alternating-current-stimulation-with-speech-envelopes-modulates-speech-comprehension
#9
Anna Wilsch, Toralf Neuling, Jonas Obleser, Christoph S Herrmann
Cortical entrainment of the auditory cortex to the broadband temporal envelope of a speech signal is crucial for speech comprehension. Entrainment results in phases of high and low neural excitability, which structure and decode the incoming speech signal. Entrainment to speech is strongest in the theta frequency range (4-8 Hz), the average frequency of the speech envelope. If a speech signal is degraded, entrainment to the speech envelope is weaker and speech intelligibility declines. Besides perceptually evoked cortical entrainment, transcranial alternating current stimulation (tACS) entrains neural oscillations by applying an electric signal to the brain...
January 17, 2018: NeuroImage
https://www.readbyqxmd.com/read/29338674/would-you-be-willing-to-zap-your-child-s-brain-public-perspectives-on-parental-responsibilities-and-the-ethics-of-enhancing-children-with-transcranial-direct-current-stimulation
#10
Katy Wagner, Hannah Maslen, Justin Oakley, Julian Savulescu
BACKGROUND: Transcranial direct current stimulation (tDCS) is an experimental brain stimulation technology that may one day be used to enhance the cognitive capacities of children. Discussion about the ethical issues that this would raise has rarely moved beyond expert circles. However, the opinions of the wider public can lead to more democratic policy decisions and broaden academic discussion of this issue. METHODS: We performed a quantitative survey of members of the US public...
January 17, 2018: AJOB Empirical Bioethics
https://www.readbyqxmd.com/read/29321584/the-critical-role-of-phase-difference-in-theta-oscillation-between-bilateral-parietal-cortices-for-visuospatial-working-memory
#11
Philip Tseng, Kai-Chi Iu, Chi-Hung Juan
Visual working memory (VWM) refers to people's ability to maintain and manipulate visual information on line. Its capacity varies between individuals, and neuroimaging studies have suggested a link between one's VWM capacity and theta power in the parietal cortex. However, it is unclear how the parietal cortices communicate with each other in order to support VWM processing. In two experiments we employed transcranial alternate current stimulation (tACS) to use frequency-specific (6 Hz) alternating current to modulate theta oscillation between the left and right parietal cortex with either in-phase (0° difference, Exp 1), anti-phase (180° difference, Exp 2), or sham sinusoidal current stimulation...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317186/perturbation-of-theta-gamma-coupling-at-the-temporal-lobe-hinders-verbal-declarative-memory
#12
Gabriel Amador de Lara, Ivan Alekseichuk, Zsolt Turi, Albert Lehr, Andrea Antal, Walter Paulus
BACKGROUND: Phase-amplitude cross-frequency coupling (PAC) is characterized by the modulation of the power of a fast brain oscillation (e.g., gamma) by the phase of a slow rhythm (e.g., theta). PAC in different sub- and neocortical regions is known to underlie effective neural communication and correlates with successful long-term memory formation. OBJECTIVE/HYPOTHESIS: The present work aims to extend earlier observational data, by probing the functional role of theta-gamma PAC in the left temporal cortex in humans during verbal long-term memory encoding...
December 25, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29241672/catatonia-with-schizophrenia-from-ect-to-rtms
#13
E Stip, M-E Blain-Juste, O Farmer, M-P Fournier-Gosselin, P Lespérance
BACKGROUND: Electroconvulsive therapy is indicated in cases of catatonic schizophrenia following a failure of the challenge test with lorazepam or Zolpidem®. Some patients need maintenance treatment with ECT. Repetitive Transcranial Magnetic Stimulation (rTMS) and anodal Transcranial direct-current stimulation (tDCS) might be effective against catatonia. OBJECTIVE: Consider an alternative to ECT for a refractory patient. REVIEW: Twenty-one articles were identified mainly based on case reports series were found using search on Medline, Google Scholar, PsychInfo, CAIRNS...
December 11, 2017: L'Encéphale
https://www.readbyqxmd.com/read/29234136/study-adherence-in-a-tdcs-longitudinal-clinical-trial-with-people-with-spinal-cord-injury
#14
Sandra Carvalho, Jorge Leite, Felipe Jones, Leslie R Morse, Ross Zafonte, Felipe Fregni
STUDY DESIGN: Secondary analysis of a clinical trial. OBJECTIVES: To analyze adherence to 1-year transcranial Direct Current Stimulation (tDCS) clinical trial in people with chronic pain due to spinal cord injury (SCI). We also explore the association between dropout and several baseline variables such as age, depression levels, pain severity, number of days with pain in the last 7 days, walking ability, sleep, work, relationship with others, and enjoyment with life...
December 13, 2017: Spinal Cord
https://www.readbyqxmd.com/read/29207262/transcranial-electrical-stimulation
#15
Sven Bestmann, Vincent Walsh
Transcranial electrical stimulation (tES) is a neuromodulatory technique in which low voltage constant or alternating currents are applied to the human brain via scalp electrodes. The basic idea of tES is that the application of weak currents can interact with neural processing, modify plasticity and entrain brain networks, and that this in turn can modify behaviour. The technique is now widely employed in basic and translational research, and increasingly is also used privately in sport, the military and recreation...
December 4, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/29200551/efficacy-of-transcranial-direct-current-stimulation-in-the-treatment-resistant-patients-who-suffer-from-severe-obsessive-compulsive-disorder
#16
Kiomars Najafi, Youssef Fakour, Homa Zarrabi, Abtin Heidarzadeh, Mohammadrasoul Khalkhali, Taiebeh Yeganeh, Hasan Farahi, Marziyeh Rostamkhani, Tahereh Najafi, Soheil Shabafroz, Mahdiyeh Pakdaman
Background: During the past years, significant efforts have been made to explain the biological backgrounds of obsessive-compulsive disorder (OCD). Cortical-subcortical and neurotransmitter models are used for explaining the symptoms of OCD, so our hypothesis is that brain's transcranial direct current stimulation (TDCS) can regulate the brain activities of the OCD patients. Thus, based on the mentioned issues, this research seeks to investigate the efficacy of TDCS in treatment-resistant patients who suffer from severe OCD...
September 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/29196322/a-new-high-efficacy-noninvasive-transcranial-electric-stimulation-tuned-to-local-neurodynamics
#17
Carlo Cottone, Andrea Cancelli, Patrizio Pasqualetti, Camillo Porcaro, Carlo Salustri, Franca Tecchio
In this paper, we pose the following working hypothesis: in humans, transcranial electric stimulation (tES) with a time course that mimics the endogenous activity of its target is capable of altering the target's excitability. In our case, the target was the primary motor cortex (M1). We identified the endogenous neurodynamics of hand M1's subgroups of pyramidal neuronal pools in each of our subjects by applying Functional Source Separation (FSS) to their EEG recordings. We then tested whether the corticospinal excitability of the hand representation under the above described stimulation, which we named transcranial individual neurodynamics stimulation (tIDS), was higher than in the absence of stimulation (baseline)...
January 17, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29187553/ih-interacts-with-somato-dendritic-structure-to-determine-frequency-response-to-weak-alternating-electric-field-stimulation
#18
Enrique H S Toloza, Ehsan Negahbani, Flavio Frohlich
Transcranial current stimulation (tCS) modulates brain dynamics using weak electric fields. Given the pathological changes in brain network oscillations in neurological and psychiatric illnesses, using alternating electric field waveforms that engage rhythmic activity has been proposed as a targeted, network-level treatment approach. Previous studies have investigated the effects of electric fields at the neuronal level. However, the biophysical basis of the cellular response to electric fields has remained limited...
November 29, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29180075/cortical-neuromodulation-for-neuropathic-pain-and-parkinson-disease-where-are-we
#19
Angelo Lavano, Giusy Guzzi, Domenico Chirchiglia
Cortex neuromodulation is promising approach for treatment of some neurological conditions, especially neuropathic pain and Parkinson's disease. Effects of non-invasive cortical stimulation are short lived; transcranial direct current stimulation (tDCS) and transcranial alternating current stimulation (tACS) may be useful to assess the suitability for invasive cortical stimulation. Direct cortical stimulation (DCS) is the method able to provide long-lasting effects in treatment of neuropathic pain and some symptoms of Parkinson's disease through the use of totally implantable systems that ensure a chronic stimulation...
November 13, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29176918/the-influence-of-transcranial-alternating-current-stimulation-tacs-on-fluid-intelligence-an-fmri-study
#20
A C Neubauer, M Wammerl, M Benedek, E Jauk, N Jaušovec
The past decades have witnessed a huge interest in uncovering the neural bases of intelligence (e.g., Stelmack, & Houlihan, 1995; Stelmack, Knott, & Beauchamp, 2003). This study investigated the influence of transcranial alternating current stimulation (tACS) on fluid intelligence performance and corresponding brain activation. Previous findings showed that left parietal theta tACS leads to a transient increase in fluid reasoning performance. In an attempt to extend and replicate these findings, we combined theta tACS with fMRI...
November 1, 2017: Personality and Individual Differences
keyword
keyword
47548
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"