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https://www.readbyqxmd.com/read/28647325/the-processing-of-semantic-relatedness-in-the-brain-evidence-from-associative-and-categorical-false-recognition-effects-following-transcranial-direct-current-stimulation-of-the-left-anterior-temporal-lobe
#1
Emiliano Díez, Carlos J Gómez-Ariza, Antonio M Díez-Álamo, María A Alonso, Angel Fernandez
A dominant view of the role of the anterior temporal lobe (ATL) in semantic memory is that it serves as an integration hub, specialized in the processing of semantic relatedness by way of mechanisms that bind together information from different brain areas to form coherent amodal representations of concepts. Two recent experiments, using brain stimulation techniques along with the Deese-Roediger-McDermott (DRM) paradigm, have found a consistent false memory reduction effect following stimulation of the ATL, pointing to the importance of the ATL in semantic/conceptual processing...
June 3, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28640159/transcranial-direct-current-stimulation-effects-on-menopausal-vasomotor-symptoms
#2
Mônia Steigleder Bianchi, Charles Francisco Ferreira, Felipe Fregni, Pedro Schestatsky, Wolnei Caumo, Maria Celeste Osório Wender
OBJECTIVE: To assess the effects of transcranial direct current stimulation (tDCS) compared with tDCS-sham on vasomotor symptoms of postmenopausal women. METHODS: Postmenopausal women (N = 30), aged between 45 and 68 years, with at least four episodes of vasomotor symptoms per day, were recruited from a specialized outpatient clinic at a tertiary hospital in the south of Brazil and through a media call after inclusion and exclusion criteria were ensured. Active and tDCS-sham were administered over the motor cortex position (anode electrode) and contralateral supraorbital region (cathode electrode) for 10 consecutive days, except weekends...
June 19, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28632467/effects-of-a-single-session-of-transcranial-direct-current-stimulation-on-upper-limb-movements-in-children-with-cerebral-palsy-a-randomized-sham-controlled-study
#3
Renata Calhes Franco Moura, Cibele Santos, Luanda Collange Grecco, Giorgio Albertini, Veronica Cimolin, Manuela Galli, Claudia Oliveira
INTRODUCTION: Motor impairment in children with spastic hemiparetic cerebral palsy (CP) is generally more prominent in the affected upper limb, leading to limitations in hand function stemming from deficiencies in motor coordination and selective motor control as well as muscle weakness, slower execution of movements and deficient integration of sensory-motor information. OBJECTIVE: Determine the effect of a single session of anodal transcranial direct current stimulation (tDCS) combined with functional training on the spatiotemporal variables of upper arm movements in children with spastic hemiparesis...
February 25, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28618292/influence-of-transcutaneous-spinal-stimulation-on-human-ltp-like-pain-amplification-a-randomized-double-blind-study-in-volunteers
#4
L M Schweizer, P K Zahn, E M Pogatzki-Zahn, W Magerl, M Tegenthoff, C H Meyer-Frießem
OBJECTIVE: Transcutaneous spinal direct current stimulation (tsDCS) has been proven to affect nociceptive signal processing. We designed a randomized, double-blind, cross-over study to investigate whether tsDCS applied before or after inducing long-term potentiation-(LTP)-like hyperalgesia may decrease nociceptive sensitivity. METHODS: In healthy volunteers, tsDCS (2.5mA, 15min) was applied to the thoracic spine prior (n=14) or immediately following (n=12) electrical high-frequency stimulation (HFS) to the thigh, inducing hyperalgesia...
May 18, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28611751/cable-bacteria-and-the-bioelectrochemical-snorkel-the-natural-and-engineered-facets-playing-a-role-in-hydrocarbons-degradation-in-marine-sediments
#5
Bruna Matturro, Carolina Cruz Viggi, Federico Aulenta, Simona Rossetti
The composition and metabolic traits of the microbial communities acting in an innovative bioelectrochemical system were here investigated. The system, known as Oil Spill Snorkel, was recently developed to stimulate the oxidative biodegradation of petroleum hydrocarbons in anoxic marine sediments. Next Generation Sequencing was used to describe the microbiome of the bulk sediment and of the biofilm growing attached to the surface of the electrode. The analysis revealed that sulfur cycling primarily drives the microbial metabolic activities occurring in the bioelectrochemical system...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28593094/anodal-transcranial-direct-current-stimulation-tdcs-increases-isometric-strength-of-shoulder-rotators-muscles-in-handball-players
#6
Fuad Ahmad Hazime, Ronaldo Alves da Cunha, Renato Rozenblit Soliaman, Ana Clara Bezerra Romancini, Alberto de Castro Pochini, Benno Ejnisman, Abrahão Fontes Baptista
BACKGROUND: Weakness of the rotator cuff muscles can lead to imbalances in the strength of shoulder external and internal rotators, change the biomechanics of the glenohumeral joint and predispose an athlete to injury. Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that has demonstrated promising results in a variety of health conditions. However few studies addressed its potential approach in the realm of athletics. HYPOTHESIS/PURPOSE: The purpose of this study was to investigate if transcranial direct current stimulation (tDCS) technique increases the isometric muscle strength of shoulder external and internal rotators in handball athletes...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28592857/effects-of-transcranial-direct-current-stimulation-on-temperature-and-pain-perception
#7
Laura Mordillo-Mateos, Michele Dileone, Vanesa Soto-León, Angela Brocalero-Camacho, Yolanda A Pérez-Borrego, Ana Onate-Figuerez, Juan Aguilar, Antonio Oliviero
Transcranial direct current stimulation modifies cortical excitability and in consequence some cerebral functions. In the present study we aimed to elucidate whether tDCS could affect temperature and pain perceptions in healthy subjects testing different stimulation parameters. A total of 20 healthy subjects were studied by means of quantitative sensory testing. Two different experiments were performed. First, we studied the effects of 15 minutes 2 mA anodal transcranial direct current stimulation applied over left M1 and parietal cortex in two separated sessions...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592853/framing-susceptibility-in-a-risky-choice-game-is-altered-by-galvanic-vestibular-stimulation
#8
Nora Preuss, Roger Kalla, Rene Müri, Fred W Mast
Recent research provides evidence that galvanic vestibular stimulation (GVS) has a modulating effect on somatosensory perception and spatial cognition. However, other vestibular stimulation techniques have induced changes in affective control and decision making. The aim of this study was to investigate the effect of GVS on framing susceptibility in a risky-choice game. The participants were to decide between a safe and a risky option. The safe option was framed either positively or negatively. During the task, the participants were exposed to either left anodal/right cathodal GVS, right anodal/left cathodal GVS, or sham stimulation (control condition)...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592845/relaxing-learned-constraints-through-cathodal-tdcs-on-the-left-dorsolateral-prefrontal-cortex
#9
Caroline Di Bernardi Luft, Ioanna Zioga, Michael J Banissy, Joydeep Bhattacharya
We solve problems by applying previously learned rules. The dorsolateral prefrontal cortex (DLPFC) plays a pivotal role in automating this process of rule induction. Despite its usual efficiency, this process fails when we encounter new problems in which past experience leads to a mental rut. Learned rules could therefore act as constraints which need to be removed in order to change the problem representation for producing the solution. We investigated the possibility of suppressing the DLPFC by transcranial direct current stimulation (tDCS) to facilitate such representational change...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28588441/tempering-proactive-cognitive-control-by-transcranial-direct-current-stimulation-of-the-right-but-not-the-left-lateral-prefrontal-cortex
#10
Carlos J Gómez-Ariza, María C Martín, Julia Morales
Behavioral and neuroimaging data support the distinction of two different modes of cognitive control: proactive, which involves the active and sustained maintenance of task-relevant information to bias behavior in accordance with internal goals; and reactive, which entails the detection and resolution of interference at the time it occurs. Both control modes may be flexibly deployed depending on a variety of conditions (i.e., age, brain alterations, motivational factors, prior experience). Critically, and in line with specific predictions derived from the dual mechanisms of control account (Braver, 2012), findings from neuroimaging studies indicate that the same lateral prefrontal regions (i...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28572072/the-critical-role-of-cognitive-based-trait-differences-in-transcranial-direct-current-stimulation-tdcs-suppression-of-food-craving-and-eating-in-frank-obesity
#11
Mary Katherine Ray, Maria D Sylvester, Lauren Osborn, Joel Helms, Bulent Turan, Emilee E Burgess, Mary M Boggiano
Obesity remains a major public health concern and novel treatments are needed. Transcranial direct current stimulation (tDCS) is a neuromodulation technique shown to reduce food craving and consumption, especially when targeting the dorsolateral prefrontal cortex (DLPFC) with a right anode/left cathode electrode montage. Despite the implications to treat frank (non-bingeeating) obesity, no study has tested the right anode/left cathode montage in this population. Additionally, most tDCS appetite studies have not controlled for differences in traits under DLPFC control that may influence how well one responds to tDCS...
May 29, 2017: Appetite
https://www.readbyqxmd.com/read/28567858/optimization-of-interphase-intervals-to-enhance-the-evoked-muscular-responses-of-transcutaneous-neuromuscular-electrical-stimulation
#12
Jose Luis Vargas Luna, Matthias Krenn, Winfried Mayr, Jorge Armando Cortés Ramírez
Neuromuscular electrical stimulation (NMES) is a widely used technique for clinical diagnostic, treatment, and research. Normally, it applies charge-balanced biphasic pulses, which several publications have reported to be less efficient than monophasic pulses. A good alternative is the use of interphase intervals (IPI) on biphasic pulses that allows to achieve similar responses than those evoked by monophasic stimulation. This study analyzes the enhancing mechanism of the IPI and provides guidelines on how to optimize the IPI in order to reduce secondary effects such as the electrode corrosion...
June 1, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28566193/efficacy-of-transcranial-direct-current-stimulation-over-primary-motor-cortex-anode-and-contralateral-supraorbital-area-cathode-on-clinical-pain-severity-and-mobility-performance-in-persons-with-knee-osteoarthritis-an-experimenter-and-participant-blinded-randomized
#13
Hyochol Ahn, Adam J Woods, Mark E Kunik, Abhishek Bhattacharjee, Zhiguo Chen, Eunyoung Choi, Roger B Fillingim
BACKGROUND: Previous studies indicate that transcranial direct current stimulation (tDCS) with anode over motor cortex (M1) and cathode over contralateral supraorbital region (SO) may be effective in reducing pain, but these studies are limited in number and have not focused on older adults with osteoarthritis (OA). OBJECTIVE: To evaluate the preliminary efficacy and safety of M1-SO applied tDCS on clinical pain severity and mobility performance in adults with knee OA pain...
May 19, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28566169/transcranial-direct-current-stimulation-over-the-primary-motor-vs-prefrontal-cortex-in-refractory-chronic-migraine-a-pilot-randomized-controlled-trial
#14
Suellen Marinho Andrade, Renata Emanuela Lyra de Brito Aranha, Eliane Araújo de Oliveira, Camila Teresa Ponce Leon de Mendonça, Wanessa Kallyne Nascimento Martins, Nelson Torro Alves, Bernardino Fernández-Calvo
Although transcranial direct current stimulation (tDCS) represents a therapeutic option for the prophylaxis of chronic migraine, the target area for application of the electrical current to the cortex has not yet been well established. Here we sought to determine whether a treatment protocol involving 12 sessions of 2mA, 20min anodal stimulation of the left primary motor (M1) or dorsolateral prefrontal cortex (DLPFC) could offer clinical benefits in the management of pain from migraine. Thirteen participants were assessed before and after treatment, using the Headache Impact Test-6, Visual Analogue Scale and Medical Outcomes Study 36 - Item Short - Form Health Survey...
July 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28559805/semantic-feature-training-in-combination-with-transcranial-direct-current-stimulation-tdcs-for-progressive-anomia
#15
Jinyi Hung, Ashley Bauer, Murray Grossman, Roy H Hamilton, H B Coslett, Jamie Reilly
We examined the effectiveness of a 2-week regimen of a semantic feature training in combination with transcranial direct current stimulation (tDCS) for progressive naming impairment associated with primary progressive aphasia (N = 4) or early onset Alzheimer's Disease (N = 1). Patients received a 2-week regimen (10 sessions) of anodal tDCS delivered over the left temporoparietal cortex while completing a language therapy that consisted of repeated naming and semantic feature generation. Therapy targets consisted of familiar people, household items, clothes, foods, places, hygiene implements, and activities...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28559804/using-transcranial-direct-current-stimulation-to-enhance-creative-cognition-interactions-between-task-polarity-and-stimulation-site
#16
REVIEW
Adam B Weinberger, Adam E Green, Evangelia G Chrysikou
Creative cognition is frequently described as involving two primary processes, idea generation and idea selection. A growing body of research has used transcranial direct current stimulation (tDCS) to examine the neural mechanisms implicated in each of these processes. This literature has yielded a diverse set of findings that vary depending on the location and type (anodal, cathodal, or both) of electrical stimulation employed, as well as the task's reliance on idea generation or idea selection. As a result, understanding the interactions between stimulation site, polarity and task demands is required to evaluate the potential of tDCS to enhance creative performance...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28556188/effect-of-transcranial-direct-current-stimulation-on-neuroplasticity-in-corticomotor-pathways-of-the-tongue-muscles
#17
Mohit Kothari, Peter W Stubbs, Krystian Figlewski, Asger R Pedersen, Jim Jensen, Lene Baad-Hansen, Peter Svensson, Jørgen F Nielsen
To investigate effects of transcranial direct current stimulation (tDCS) on neuroplasticity in corticomotor pathways related to tongue muscles evoked by a training task using the Tongue Drive System (TDS). Using a cross-over design, 13 healthy participants completed two sessions of tDCS while performing 30 min of TDS training. Sessions were spaced at least 2 weeks apart and participants randomly received anodal and sham tDCS stimulation in the first session and the other condition in the second session. Single and paired pulse transcranial magnetic stimulation was used to elicit motor evoked potentials (MEPs) of the tongue at three time-points; before, immediately after and 30 min after training...
May 28, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28555104/tdcs-over-the-motor-cortex-shows-differential-effects-on-action-and-object-words-in-associative-word-learning-in-healthy-aging
#18
Meret Branscheidt, Julia Hoppe, Nils Freundlieb, Pienie Zwitserlood, Gianpiero Liuzzi
Healthy aging is accompanied by a continuous decline in cognitive functions. For example, the ability to learn languages decreases with age, while the neurobiological underpinnings for the decline in learning abilities are not known exactly. Transcranial direct current stimulation (tDCS), in combination with appropriate experimental paradigms, is a well-established technique to investigate the mechanisms of learning. Based on previous results in young adults, we tested the suitability of an associative learning paradigm for the acquisition of action- and object-related words in a cohort of older participants...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28554230/transcutaneous-spinal-direct-current-stimulation-alters-resting-state-functional-connectivity
#19
Lauren Schweizer, Christine H Meyer-Frießem, Peter K Zahn, Martin Tegenthoff, Tobias Schmidt-Wilcke
Transcutaneous spinal direct current stimulation (tsDCS) is a non-invasive method that can modulate spinal reflexes, sensory afferent conduction, and even pain perception. While neurophysiological evidence suggests that tsDCS alters somatosensory and nociceptive afferent conduction to the cortex, its supraspinal effects have not yet been investigated using functional imaging to investigate tsDCS-induced alterations in intrinsic functional connectivity (FC). Therefore, we hypothesize that tsDCS-induced changes in neurophysiological measures might also be reflected in spontaneous brain activity...
May 29, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28554079/attentional-bias-mediates-the-effect-of-neurostimulation-on-emotional-vulnerability
#20
Nigel T M Chen, Julian Basanovic, Lies Notebaert, Colin MacLeod, Patrick J F Clarke
Transcranial direct current stimulation (tDCS) is a neuromodulatory technique which has garnered recent interest in the potential treatment for emotion-based psychopathology. While accumulating evidence suggests that tDCS may attenuate emotional vulnerability, critically, little is known about underlying mechanisms of this effect. The present study sought to clarify this by examining the possibility that tDCS may affect emotional vulnerability via its capacity to modulate attentional bias towards threatening information...
October 2017: Journal of Psychiatric Research
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