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Transcranial random noise stimulation

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https://www.readbyqxmd.com/read/29704524/differential-effects-of-high-frequency-transcranial-random-noise-stimulation-hf-trns-on-contrast-sensitivity-and-visual-acuity-when-combined-with-a-short-perceptual-training-in-adults-with-amblyopia
#1
Beatrice Moret, Rebecca Camilleri, Andrea Pavan, Giuseppe Lo Giudice, Antonella Veronese, Roberta Rizzo, Gianluca Campana
Amblyopia is a neuro-developmental disorder characterised by several functional impairments in spatial vision even with the best optical correction. There is evidence that extensive perceptual training can improve visual acuity (VA) and contrast sensitivity (CS) in adults with amblyopia. In the present study, we assessed the efficacy of a recently developed neuro-modulatory technique (i.e., high-frequency transcranial random noise stimulation; hf-tRNS) combined with a short perceptual training in adults with amblyopia...
April 25, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29675810/neurostimulation-for-memory-enhancement-in-epilepsy
#2
REVIEW
Stephen Meisenhelter, Barbara C Jobst
PURPOSE OF REVIEW: Memory is one of the top concerns of epilepsy patients, but there are no known treatments to directly alleviate the memory deficits associated with epilepsy. Neurostimulation may provide new therapeutic tools to enhance memory in epilepsy patients. Here, we critically review recent investigations of memory enhancement using transcranial electrical stimulation (tES), transcranial magnetic stimulation (TMS), vagus nerve stimulation (VNS), chronic intracranial stimulation, and acute intracranial stimulation...
April 19, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29674948/low-to-no-effect-application-of-trns-during-two-digit-addition
#3
Silke M Bieck, Christina Artemenko, Korbinian Moeller, Elise Klein
Transcranial electric stimulation such as transcranial random noise stimulation (tRNS) and transcranial direct current stimulation (tDCS) have been used to investigate structure-function relationships in numerical cognition. Recently, tRNS was suggested to be more effective than tDCS. However, so far there is no evidence on the differential impact of tDCS and tRNS on numerical cognition using the same experimental paradigm. In the present study, we used a two-digit addition paradigm for which significant-albeit small-effects of tDCS were observed previously to evaluate the impact of parietal and frontal tRNS on specific numerical effects...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29653297/the-efficacy-of-transcranial-random-noise-stimulation-trns-on-mood-may-depend-on-individual-differences-including-age-and-trait-mood
#4
Carys Evans, Michael J Banissy, Rebecca A Charlton
OBJECTIVES: To assess whether changes in brain microstructures associated with ageing and presence of cardiovascular risk factors (CVRF) reduce the efficacy of transcranial electrical stimulation (tES) improving mood in euthymic older adults. METHODS: Using excitatory high-frequency transcranial random noise stimulation (tRNS) over bilateral dorsolateral prefrontal cortex, the effect on mood was assessed in euthymic young adults (YA), older adults (HOA) and older adults with CVRF (OVR)...
March 31, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29652088/non-invasive-brain-stimulation-techniques-for-chronic-pain
#5
REVIEW
Neil E O'Connell, Louise Marston, Sally Spencer, Lorraine H DeSouza, Benedict M Wand
BACKGROUND: This is an updated version of the original Cochrane Review published in 2010, Issue 9, and last updated in 2014, Issue 4. Non-invasive brain stimulation techniques aim to induce an electrical stimulation of the brain in an attempt to reduce chronic pain by directly altering brain activity. They include repetitive transcranial magnetic stimulation (rTMS), cranial electrotherapy stimulation (CES), transcranial direct current stimulation (tDCS), transcranial random noise stimulation (tRNS) and reduced impedance non-invasive cortical electrostimulation (RINCE)...
April 13, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29649503/modulating-fluid-intelligence-performance-through-combined-cognitive-training-and-brain-stimulation
#6
Anna-Katharine Brem, Jessamy Norton-Ford Almquist, Karen Mansfield, Franziska Plessow, Francesco Sella, Emiliano Santarnecchi, Umut Orhan, James McKanna, Misha Pavel, Santosh Mathan, Nick Yeung, Alvaro Pascual-Leone, Roi Cohen Kadosh, On Behalf Of Honeywell Sharp Team Authors
It is debated whether cognitive training of specific executive functions leads to far transfer effects, such as improvements in fluid intelligence (Gf). Within this context, transcranial direct current stimulation and recently also novel protocols such as transcranial random noise and alternating current stimulation are being investigated with regards to their ability to enhance cognitive training outcomes. We compared the effects of four different transcranial electrical brain stimulation protocols in combination with nine daily computerized training sessions on Gf...
April 9, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29547746/modulation-of-the-dichotic-right-ear-advantage-during-bilateral-but-not-unilateral-transcranial-random-noise-stimulation
#7
Giulia Prete, Anita D'Anselmo, Luca Tommasi, Alfredo Brancucci
Transcranial electrical stimulation (tES) has been increasingly adopted to modulate perceptual and cognitive functions, but the effects on auditory perception are still relatively uncharted. Starting from the evidence that a stronger right ear advantage effect (REA) in dichotic listening positively correlates with speech sound processing, the present study was aimed at modulating the REA by means of high-frequency transcranial Random Noise Stimulation (hf-tRNS). Stimulation was applied over the auditory cortex (AC) either unilaterally (Experiment 1, N = 50) or bilaterally (Experiment 2, N = 24) during a verbal dichotic listening task...
June 2018: Brain and Cognition
https://www.readbyqxmd.com/read/29547226/non-invasive-brain-stimulation-techniques-for-chronic-pain
#8
REVIEW
Neil E O'Connell, Louise Marston, Sally Spencer, Lorraine H DeSouza, Benedict M Wand
BACKGROUND: This is an updated version of the original Cochrane Review published in 2010, Issue 9, and last updated in 2014, Issue 4. Non-invasive brain stimulation techniques aim to induce an electrical stimulation of the brain in an attempt to reduce chronic pain by directly altering brain activity. They include repetitive transcranial magnetic stimulation (rTMS), cranial electrotherapy stimulation (CES), transcranial direct current stimulation (tDCS), transcranial random noise stimulation (tRNS) and reduced impedance non-invasive cortical electrostimulation (RINCE)...
March 16, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29516204/seeing-the-world-as-it-is-mimicking-veridical-motion-perception-in-schizophrenia-using-non-invasive-brain-stimulation-in-healthy-participants
#9
Gorana Pobric, Johan Hulleman, Michal Lavidor, Gail Silipo, Stephanie Rohrig, Elisa Dias, Daniel C Javitt
Schizophrenia (Sz) is a mental health disorder characterized by severe cognitive, emotional, social, and perceptual deficits. Visual deficits are found in tasks relying on the magnocellular/dorsal stream. In our first experiment we established deficits in global motion processing in Sz patients compared to healthy controls. We used a novel task in which background optic flow produces a distortion of the apparent trajectory of a moving stimulus, leading control participants to provide biased estimates of the true motion trajectory under conditions of global stimulation...
March 7, 2018: Brain Topography
https://www.readbyqxmd.com/read/29324073/rapid-improvement-on-a-temporal-attention-task-within-a-single-session-of-high-frequency-transcranial-random-noise-stimulation
#10
Sarah C Tyler, Federica Contò, Lorella Battelli
This study explored the modulatory effects of high-frequency transcranial random noise stimulation (tRNS) on visual sensitivity during a temporal attention task. We measured sensitivity to different onset asynchronies during a temporal order judgment task as a function of active stimulation relative to sham. While completing the task, participants were stimulated bilaterally for 20 min over either the TPJ or the human middle temporal area. We hypothesized that tRNS over the TPJ, which is critical to the temporal attention network, would selectively increase cortical excitability and induce cognitive training-like effects on performance, perhaps more so in the left visual field [Matthews, N...
May 2018: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29274342/the-modulatory-role-of-pre-sma-in-speed-accuracy-tradeoff-a-bi-directional-tms-study
#11
Dilara Berkay, Hale Yapıcı Eser, Alexander T Sack, Yusuf Özgür Çakmak, Fuat Balcı
Many perceptual decisions are inevitably subject to the tradeoff between speed and accuracy of choices (SAT). Sequential sampling models attribute this ubiquitous relation to random noise in the sensory evidence accumulation process, and assume that SAT is adaptively modulated by altering the decision thresholds at which the level of integrated evidence should reach for making a choice. Although, neuroimaging studies have shown a relationship between right presupplementary motor area (pre-SMA) activity and threshold setting, only a limited number of brain stimulation studies aimed at establishing the causal link, results of which were inconsistent...
January 31, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29196322/a-new-high-efficacy-noninvasive-transcranial-electric-stimulation-tuned-to-local-neurodynamics
#12
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/29163104/transcranial-random-noise-stimulation-does-not-improve-behavioral-and-neurophysiological-measures-in-patients-with-subacute-vegetative-unresponsive-wakefulness-state-vs-uws
#13
Mauro Mancuso, Laura Abbruzzese, Stefania Canova, Giulia Landi, Simone Rossi, Emiliano Santarnecchi
Background: The absence of efficient treatments capable to promote central nervous system recovery in patients in vegetative state (VS) due to a severe acquired brain injury highlights the need of exploring alternative neuromodulatory treatments that can lead to neurobehavioral gains. Some encouraging preliminary observations suggest that transcranial direct current stimulation could be effective in disorders of consciousness (DoC) patients, especially when applied on the dorsolateral prefrontal cortex (DLPFC) in patients with minimally conscious state (MCS) but not in those with VS...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29155756/transcranial-electrical-brain-stimulation-in-alert-rodents
#14
Brita Fritsch, Anne-Kathrin Gellner, Janine Reis
Transcranial electrical brain stimulation can modulate cortical excitability and plasticity in humans and rodents. The most common form of stimulation in humans is transcranial direct current stimulation (tDCS). Less frequently, transcranial alternating current stimulation (tACS) or transcranial random noise stimulation (tRNS), a specific form of tACS using an electrical current applied randomly within a pre-defined frequency range, is used. The increase of noninvasive electrical brain stimulation research in humans, both for experimental and clinical purposes, has yielded an increased need for basic, mechanistic, safety studies in animals...
November 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29150051/glutamate-is-down-regulated-and-tinnitus-loudness-levels-decreased-following-rtms-over-auditory-cortex-of-the-left-hemisphere-a-prospective-randomized-single-blinded-sham-controlled-cross-over-study
#15
Anthony T Cacace, Jiani Hu, Stephen Romero, Yang Xuan, Robert F Burkard, Richard S Tyler
Using a prospective randomized single-blinded sham-controlled cross-over design, we studied the efficacy of low frequency (1-Hz) repetitive transcranial magnetic stimulation (rTMS) over auditory cortex of the left temporal lobe as an experimental treatment modality for noise-induced tinnitus. Pre/post outcome measures for sham vs. active rTMS conditions included differential changes in tinnitus loudness, self-perceived changes in the Tinnitus Handicap Questionnaire (THQ), and neurochemical changes of brain metabolite concentrations using single voxel proton magnetic resonance spectroscopy ((1)H-MRS) obtained from left and right auditory cortical areas...
November 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/29142279/modifying-response-times-in-the-simon-task-with-transcranial-random-noise-stimulation
#16
James Robert McIntosh, Carsten Mehring
Perceptual decisions pervade our every-day lives, and can align or conflict with inbuilt biases. We investigated these conflicting biases by applying transcranial random noise stimulation (tRNS) while subjects took part in a visual Simon task - a paradigm where irrelevant spatial cues influence the response times of subjects to relevant colour cues. We found that tRNS reduces the response time of subjects independent of the congruence between spatial and colour cues, but dependent on the baseline response time, both between subjects and across conditions within subjects...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29079475/high-definition-transcranial-pink-noise-stimulation-of-anterior-cingulate-cortex-on-food-craving-an-explorative-study
#17
Sook Ling Leong, Dirk De Ridder, Sven Vanneste, Wayne Sutherland, Samantha Ross, Patrick Manning
Dysfunctional neural activity in the cortical reward system network has been implicated in food addiction. This is the first study exploring the potential therapeutic effects of high definition transcranial pink noise stimulation (HD-tPNS) targeted at the anterior cingulate cortex (ACC) on craving and brain activity in women with obesity who showed features of food addiction (Yale Food Addiction Scale score of ≥3). Sixteen eligible females participated in a randomized, double-blind, parallel group study. Participants received six 20-minute sessions of either 1 mA (n = 8) or sham (n = 8) stimulation with HD-tPNS over two weeks...
January 1, 2018: Appetite
https://www.readbyqxmd.com/read/29061290/beyond-time-and-space-the-effect-of-a-lateralized-sustained-attention-task-and-brain-stimulation-on-spatial-and-selective-attention
#18
Nir Shalev, Linde De Wandel, Paul Dockree, Nele Demeyere, Magdalena Chechlacz
The Theory of Visual Attention (TVA) provides a mathematical formalisation of the "biased competition" account of visual attention. Applying this model to individual performance in a free recall task allows the estimation of 5 independent attentional parameters: visual short-term memory (VSTM) capacity, speed of information processing, perceptual threshold of visual detection; attentional weights representing spatial distribution of attention (spatial bias), and the top-down selectivity index. While the TVA focuses on selection in space, complementary accounts of attention describe how attention is maintained over time, and how temporal processes interact with selection...
October 3, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28921774/modulating-vicarious-tactile-perception-with-transcranial-electrical-current-stimulation
#19
Natalie C Bowling, Michael J Banissy
Our capacity to share the experiences of others is a critical part of social behaviour. One process thought to be important for this is vicarious perception. Passively viewing touch activates some of the same network of brain regions as the direct experience of touch. This vicarious experience is usually implicit, but for some people, viewing touch evokes conscious tactile sensations (mirror-touch synaesthesia). Recent work has attempted to induce conscious vicarious touch in those that do not normally experience these sensations, using transcranial direct current stimulation (tDCS)...
October 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28914605/a-causal-role-for-right-frontopolar-cortex-in-directed-but-not-random-exploration
#20
Wojciech K Zajkowski, Malgorzata Kossut, Robert C Wilson
The explore-exploit dilemma occurs anytime we must choose between exploring unknown options for information and exploiting known resources for reward. Previous work suggests that people use two different strategies to solve the explore-exploit dilemma: directed exploration, driven by information seeking, and random exploration, driven by decision noise. Here, we show that these two strategies rely on different neural systems. Using transcranial magnetic stimulation to inhibit the right frontopolar cortex, we were able to selectively inhibit directed exploration while leaving random exploration intact...
September 15, 2017: ELife
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