keyword
MENU ▼
Read by QxMD icon Read
search

Transcranial random noise stimulation

keyword
https://www.readbyqxmd.com/read/28642686/transcranial-random-noise-stimulation-trns-shapes-the-processing-of-rapidly-changing-auditory-information
#1
Katharina S Rufener, Philipp Ruhnau, Hans-Jochen Heinze, Tino Zaehle
Neural oscillations in the gamma range are the dominant rhythmic activation pattern in the human auditory cortex. These gamma oscillations are functionally relevant for the processing of rapidly changing acoustic information in both speech and non-speech sounds. Accordingly, there is a tight link between the temporal resolution ability of the auditory system and inherent neural gamma oscillations. Transcranial random noise stimulation (tRNS) has been demonstrated to specifically increase gamma oscillation in the human auditory cortex...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28625658/enhancing-anger-perception-in-older-adults-by-stimulating-inferior-frontal-cortex-with-high-frequency-transcranial-random-noise-stimulation
#2
Tao Yang, Michael J Banissy
Extensive behavioural evidence has shown that older people have declined ability in facial emotion perception. Recent work has begun to examine the neural mechanism that contribute to this, and potential tools to support emotion perception during aging. The aim of this study was to investigate whether high frequency tRNS applied to the inferior frontal cortex would enhance facial expression perception in older adults. Healthy aged adults (60+ years) were randomly assigned to receive active high-frequency or sham tRNS targeted at bilateral inferior frontal cortices...
June 15, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28558789/repetitive-reaching-training-combined-with-transcranial-random-noise-stimulation-in-stroke-survivors-with-chronic-and-severe-arm-paresis-is-feasible-a-pilot-triple-blind-randomised-case-series
#3
Kathryn S Hayward, Sandra G Brauer, Kathy L Ruddy, David Lloyd, Richard G Carson
BACKGROUND: Therapy that combines repetitive training with non-invasive brain stimulation is a potential avenue to enhance upper limb recovery after stroke. This study aimed to investigate the feasibility of transcranial Random Noise Stimulation (tRNS), timed to coincide with the generation of voluntary motor commands, during reaching training. METHODS: A triple-blind pilot RCT was completed. Four stroke survivors with chronic (6-months to 5-years) and severe arm paresis, not taking any medications that had the potential to alter cortical excitability, and no contraindications to tRNS or MRI were recruited...
May 30, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28487047/anodal-and-cathodal-electrical-stimulation-over-v5-improves-motion-perception-by-signal-enhancement-and-noise-reduction
#4
Luca Battaglini, Stefano Noventa, Clara Casco
BACKGROUND: The effect that transcranial direct current stimulation (tDCS) has on discrimination of coherent motion (CM) signals in a field of randomly moving dots (noise) can be accounted for by both noise reduction and signal enhancement. OBJECTIVE: To distinguish between noise reduction and signal enhancement, we monitored the discrimination of the correct CM direction as a function of the coherence level (using the psychophysical method of constant stimuli)...
July 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28384347/the-impact-of-early-visual-cortex-transcranial-magnetic-stimulation-on-visual-working-memory-precision-and-guess-rate
#5
Rosanne L Rademaker, Vincent G van de Ven, Frank Tong, Alexander T Sack
Neuroimaging studies have demonstrated that activity patterns in early visual areas predict stimulus properties actively maintained in visual working memory. Yet, the mechanisms by which such information is represented remain largely unknown. In this study, observers remembered the orientations of 4 briefly presented gratings, one in each quadrant of the visual field. A 10Hz Transcranial Magnetic Stimulation (TMS) triplet was applied directly at stimulus offset, or midway through a 2-second delay, targeting early visual cortex corresponding retinotopically to a sample item in the lower hemifield...
2017: PloS One
https://www.readbyqxmd.com/read/28072813/a-case-report-on-red-ear-syndrome-with-tinnitus-successfully-treated-with-transcranial-random-noise-stimulation
#6
Peter M Kreuzer, Veronika Vielsmeier, Timm B Poeppl, Berthold Langguth
BACKGROUND: The red ear syndrome represents a rare symptom complex consisting of auricular erythema associated with painful and burning sensations. It has been described in combination with tinnitus rarely. It has been hypothesized to be etiologically related to altered trigeminal afferent input, temporomandibular disorders, and thalamic dysfunction. OBJECTIVES: The initial objective of applying transcranial random noise stimulation (tRNS) in a case of red ear syndrome in combination with tinnitus was the alleviation of the phantom sounds...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/27934947/opposite-effects-of-high-and-low-frequency-transcranial-random-noise-stimulation-probed-with-visual-motion-adaptation
#7
Gianluca Campana, Rebecca Camilleri, Beatrice Moret, Filippo Ghin, Andrea Pavan
Transcranial random noise stimulation (tRNS) is a recent neuro-modulation technique whose effects at both behavioural and neural level are still debated. Here we employed the well-known phenomenon of motion after-effect (MAE) in order to investigate the effects of high- vs. low-frequency tRNS on motion adaptation and recovery. Participants were asked to estimate the MAE duration following prolonged adaptation (20 s) to a complex moving pattern, while being stimulated with either sham or tRNS across different blocks...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27912894/self-generation-and-positivity-effects-following-transcranial-random-noise-stimulation-in-medial-prefrontal-cortex-a-reality-monitoring-task-in-older-adults
#8
Nicola Mammarella, Alberto Di Domenico, Rocco Palumbo, Beth Fairfield
Activation of medial Prefrontal Cortex (mPFC) has been typically found during reality monitoring tasks (i.e., distinguishing between internal self-generated vs external information). No study, however, has yet investigated whether transcranial Random Noise Stimulation (tRNS) over the mPFC leads to a reduction in reality-monitoring misattributions in aging. In particular, stimulating mPFC should increase the number of cognitive operations engaged while encoding and this distinctive information may help older adults to discriminate between internal and external sources better...
November 15, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27761741/the-added-value-of-auditory-cortex-transcranial-random-noise-stimulation-trns-after-bifrontal-transcranial-direct-current-stimulation-tdcs-for-tinnitus
#9
Wing Ting To, Jan Ost, John Hart, Dirk De Ridder, Sven Vanneste
Tinnitus is the perception of a sound in the absence of a corresponding external sound source. Research has suggested that functional abnormalities in tinnitus patients involve auditory as well as non-auditory brain areas. Transcranial electrical stimulation (tES), such as transcranial direct current stimulation (tDCS) to the dorsolateral prefrontal cortex and transcranial random noise stimulation (tRNS) to the auditory cortex, has demonstrated modulation of brain activity to transiently suppress tinnitus symptoms...
October 19, 2016: Journal of Neural Transmission
https://www.readbyqxmd.com/read/27496671/imaging-transcranial-direct-current-stimulation-tdcs-of-the-prefrontal-cortex-correlation-or-causality-in-stimulation-mediated-effects
#10
Jana Wörsching, Frank Padberg, Birgit Ertl-Wagner, Ulrike Kumpf, Beatrice Kirsch, Daniel Keeser
Transcranial current stimulation approaches include neurophysiologically distinct non-invasive brain stimulation techniques widely applied in basic, translational and clinical research: transcranial direct current stimulation (tDCS), oscillating transcranial direct current stimulation (otDCS), transcranial alternating current stimulation (tACS) and transcranial random noise stimulation (tRNS). Prefrontal tDCS seems to be an especially promising tool for clinical practice. In order to effectively modulate relevant neural circuits, systematic research on prefrontal tDCS is needed that uses neuroimaging and neurophysiology measures to specifically target and adjust this method to physiological requirements...
October 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27343685/the-application-of-online-transcranial-random-noise-stimulation-and-perceptual-learning-in-the-improvement-of-visual-functions-in-mild-myopia
#11
RANDOMIZED CONTROLLED TRIAL
Rebecca Camilleri, Andrea Pavan, Gianluca Campana
It has recently been demonstrated how perceptual learning, that is an improvement in a sensory/perceptual task upon practice, can be boosted by concurrent high-frequency transcranial random noise stimulation (tRNS). It has also been shown that perceptual learning can generalize and produce an improvement of visual functions in participants with mild refractive defects. By using three different groups of participants (single-blind study), we tested the efficacy of a short training (8 sessions) using a single Gabor contrast-detection task with concurrent hf-tRNS in comparison with the same training with sham stimulation or hf-tRNS with no concurrent training, in improving visual acuity (VA) and contrast sensitivity (CS) of individuals with uncorrected mild myopia...
August 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27315267/transcranial-random-noise-stimulation-does-not-enhance-the-effects-of-working-memory-training
#12
Joni Holmes, Elizabeth M Byrne, Susan E Gathercole, Michael P Ewbank
Transcranial random noise stimulation (tRNS), a noninvasive brain stimulation technique, enhances the generalization and sustainability of gains following mathematical training. Here it is combined for the first time with working memory training in a double-blind randomized controlled trial. Adults completed 10 sessions of Cogmed Working Memory Training with either active tRNS or sham stimulation applied bilaterally to dorsolateral pFC. Training was associated with gains on both the training tasks and on untrained tests of working memory that shared overlapping processes with the training tasks, but not with improvements on working memory tasks with distinct processing demands or tests of other cognitive abilities (e...
October 2016: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/27242932/transcranial-alternating-current-and-random-noise-stimulation-possible-mechanisms
#13
REVIEW
Andrea Antal, Christoph S Herrmann
Background. Transcranial alternating current stimulation (tACS) is a relatively recent method suited to noninvasively modulate brain oscillations. Technically the method is similar but not identical to transcranial direct current stimulation (tDCS). While decades of research in animals and humans has revealed the main physiological mechanisms of tDCS, less is known about the physiological mechanisms of tACS. Method. Here, we review recent interdisciplinary research that has furthered our understanding of how tACS affects brain oscillations and by what means transcranial random noise stimulation (tRNS) that is a special form of tACS can modulate cortical functions...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27224886/transcranial-random-noise-stimulation-benefits-arithmetic-skills
#14
Achille Pasqualotto
Although arithmetic skills are crucial cognitive abilities, numeric competence impairments affect a significant portion of the young population. These problems produce a high socio-economic cost by negatively affecting scholastic and work performance. The parietal cortex is the brain area that is classically associated with numeric processing, but it is still debated whether other cortical areas are involved, and only a few studies tried to directly assess the causal link between brain and this cognitive function by using transcranial random noise stimulation, tRNS...
September 2016: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27170126/transcranial-random-noise-stimulation-of-visual-cortex-stochastic-resonance-enhances-central-mechanisms-of-perception
#15
Onno van der Groen, Nicole Wenderoth
UNLABELLED: Random noise enhances the detectability of weak signals in nonlinear systems, a phenomenon known as stochastic resonance (SR). Though counterintuitive at first, SR has been demonstrated in a variety of naturally occurring processes, including human perception, where it has been shown that adding noise directly to weak visual, tactile, or auditory stimuli enhances detection performance. These results indicate that random noise can push subthreshold receptor potentials across the transfer threshold, causing action potentials in an otherwise silent afference...
May 11, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27160465/evaluation-of-a-modified-high-definition-electrode-montage-for-transcranial-alternating-current-stimulation-tacs-of-pre-central-areas
#16
Kirstin-Friederike Heise, Nick Kortzorg, Guilherme Bicalho Saturnino, Hakuei Fujiyama, Koen Cuypers, Axel Thielscher, Stephan P Swinnen
OBJECTIVE: To evaluate a modified electrode montage with respect to its effect on tACS-dependent modulation of corticospinal excitability and discomfort caused by neurosensory side effects accompanying stimulation. METHODS: In a double-blind cross-over design, the classical electrode montage for primary motor cortex (M1) stimulation (two patch electrodes over M1 and contralateral supraorbital area) was compared with an M1 centre-ring montage. Corticospinal excitability was evaluated before, during, immediately after and 15 minutes after tACS (10 min...
September 2016: Brain Stimulation
https://www.readbyqxmd.com/read/27146700/selective-alteration-of-human-value-decisions-with-medial-frontal-tdcs-is-predicted-by-changes-in-attractor-dynamics
#17
D Hämmerer, J Bonaiuto, M Klein-Flügge, M Bikson, S Bestmann
During value-based decision making, ventromedial prefrontal cortex (vmPFC) is thought to support choices by tracking the expected gain from different outcomes via a competition-based process. Using a computational neurostimulation approach we asked how perturbing this region might alter this competition and resulting value decisions. We simulated a perturbation of neural dynamics in a biophysically informed model of decision-making through in silico depolarization at the level of neuronal ensembles. Simulated depolarization increased baseline firing rates of pyramidal neurons, which altered their susceptibility to background noise, and thereby increased choice stochasticity...
May 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27107297/transcranial-random-noise-stimulation-of-visual-cortex-potentiates-value-driven-attentional-capture
#18
Martijn G van Koningsbruggen, Stefania C Ficarella, Lorella Battelli, Clayton Hickey
Reward feedback following visual search causes the visual characteristics of targets to become salient and attention-drawing, but little is known about the mechanisms underlying this value-driven capture effect. Here, we use transcranial random noise stimulation (tRNS) to demonstrate that such reward potentiation involves induced plasticity in visual cortex. Human participants completed a feature-search reward-learning task involving the selection of a red or green colored target presented among distractors of various color...
September 2016: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/27037043/enhancing-duration-processing-with-parietal-brain-stimulation
#19
Valérie Dormal, Amir-Homayoun Javadi, Mauro Pesenti, Vincent Walsh, Marinella Cappelletti
Numerosity and duration are thought to share common magnitude-based mechanisms in brain regions including the right parietal and frontal cortices like the supplementary motor area, SMA. Numerosity and duration are, however, also different in several intrinsic features. For instance, in a quantification context, numerosity is known for being more automatically accessed than temporal events, and durations are by definition sequential whereas numerosity can be both sequential and simultaneous. Moreover, numerosity and duration processing diverge in terms of their neuronal correlates...
May 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27017784/-methods-of-brain-stimulation-based-on-weak-electric-current-future-tool-for-the-clinician
#20
REVIEW
Tuukka Kotilainen, Soili M Lehto
Methods of brain stimulation based on a weak electric current are non-invasive neuromodulation techniques. They include transcranial direct current, alternating current and random noise stimulation. These methods modify the membrane potential of neurons without triggering the action potential, and have been successfully utilized to influence cognition and regulation of emotions in healthy experimental subjects. In clinical studies, indications of the efficacy of these techniques have been obtained in the treatment of depression, schizophrenia, memory disorders and pain as well as in stroke rehabilitation...
2016: Duodecim; Lääketieteellinen Aikakauskirja
keyword
keyword
47549
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"