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TDCS and cognition

Claudio Lucchiari, Paola Maria Sala, Maria Elide Vanutelli
Creativity, meant as the ability to produce novel, original and suitable ideas, has received increased attention by research in the last years, especially from neuroaesthetics and social neuroscience. Besides the research conducted on the neural correlates of such capacities, previous work tried to answer the question of whether it is possible to enhance creativity through cognitive and neural stimulation. In particular, transcranial direct current stimulation (tDCS) has been applied to increase neuronal excitability in those areas related to creativity...
2018: Frontiers in Behavioral Neuroscience
Florian Herpich, Federica Contò, Martijn van Koningsbruggen, Lorella Battelli
BACKGROUND: Transcranial random noise stimulation (tRNS) can cause long term increase of corticospinal excitability when used to prime the motor cortex, before measuring the motor response in the hand muscles with TMS (Terney et al., 2008). In cognitive studies, tRNS has been used to improve visual attention and mathematical skills, an enhancement effect that might suggest sustained cortical plasticity changes (Cappelletti et al., 2013; Snowball et al., 2013). However, while the behavioral evidence of increased performance is becoming substantiated by empirical data, it still remains unclear whether tRNS over visual areas causes an increase in cortical excitability similar to what has been found in the motor cortex, and if that increase could be a potential physiological explanation for behavioral improvements found in visual tasks...
August 11, 2018: Neuropsychologia
Koji Ishikuro, Nobuhiro Dougu, Takamasa Nukui, Mamoru Yamamoto, Yuji Nakatsuji, Satoshi Kuroda, Isao Matsushita, Hiroshi Nishimaru, Mariana F P Araujo, Hisao Nishijo
Parkinson's disease (PD) is a neurodegenerative disorder with motor and non-motor symptoms due to degeneration of dopaminergic neurons. The current pharmacological treatments induce complications associated with long-term use. However, current stimulation techniques for PD treatment, such as deep brain stimulation (DBS), are too invasive. In this context, non-invasive brain stimulation including transcranial direct current stimulation (tDCS) may be a safe and effective alternative treatment for PD. We previously reported that anodal tDCS over the frontal polar area (FPA) improved motor functions in heathy subjects...
2018: Frontiers in Aging Neuroscience
Marian E Berryhill, Donel Martin
Transcranial direct current stimulation (tDCS) is a neuromodulatory approach that is affordable, safe, and well tolerated. This review article summarizes the research and clinically relevant findings from meta-analyses and studies investigating the cognitive effects of tDCS in healthy and clinical populations. We recapitulate findings from recent studies where cognitive performance paired with tDCS was compared with performance under placebo (sham stimulation) in single sessions and longitudinal designs where cognitive effects were evaluated following repeated sessions...
August 8, 2018: Journal of ECT
Maria Concetta Pellicciari, Carlo Miniussi
Cortical excitability modulation and neuroplasticity are considered essential mechanisms for improving clinical and cognitive abilities in neurodegenerative disorders (NDDs). In such context, transcranial direct current stimulation (tDCS) shows great promise for facilitating remodeling of neurosynaptic organization. The aim of this review was to provide an overview of how tDCS is currently used as a neurorehabilitation strategy in some NDDs. We describe results from studies in which tDCS was applied in mild cognitive impairment, Alzheimer's disease, and primary progressive aphasia...
August 8, 2018: Journal of ECT
Olivia M Lapenta, Lucas M Marques, Gabriel G Rego, William E Comfort, Paulo S Boggio
The study of addiction and impulsion control disorders has shown that behaviors of seeking and consumption of addictive substances are subserved by neurobiological alterations specifically related to brain networks for reward, stress, and executive control, representing the brain's adaptation to the continued use of an addictive substance. In parallel, studies using neuromodulation techniques such as transcranial direct current stimulation (tDCS) have demonstrated promising effects in modulating cognitive and motor functions...
August 8, 2018: Journal of ECT
Michael A Hunter, Gregory Lieberman, Brian A Coffman, Michael C Trumbo, Mikaela L Armenta, Charles S H Robinson, Matthew A Bezdek, Anthony J O'Sickey, Aaron P Jones, Victoria Romero, Seth Elkin-Frankston, Sean Gaurino, Leonard Eusebi, Eric H Schumacher, Katie Witkiewitz, Vincent P Clark
Mindfulness-based training (MBT) and transcranial electrical stimulation (TES) methods such as direct current stimulation (tDCS) have demonstrated promise for the augmentation of cognitive abilities. The current study investigated the potential compatibility of concurrent "electrical" MBT and tDCS (or eMBT) by testing its combined effects on behavioral and neurophysiological indices of working memory (WM) and attentional resource allocation. Thirty-four healthy participants were randomly assigned to either a MBT task with tDCS group (eMBT) or an active control training task with sham tDCS (Control) group...
July 2018: Heliyon
Filippo Ghin, Andrea Pavan, Adriano Contillo, George Mather
BACKGROUND: High frequency transcranial random noise stimulation (hf-tRNS) facilitates performance in several perceptual and cognitive tasks, however, little is known about the underlying modulatory mechanisms. OBJECTIVE: In this study we compared the effects of hf-tRNS to those of anodal and cathodal tDCS in a global motion direction discrimination task. An equivalent noise (EN) paradigm was used to assess how hf-tRNS modulates the mechanisms underlying local and global motion processing...
July 25, 2018: Brain Stimulation
Rosa Manenti, Maria Sofia Cotelli, Chiara Cobelli, Elena Gobbi, Michela Brambilla, Danila Rusich, Antonella Alberici, Alessandro Padovani, Barbara Borroni, Maria Cotelli
BACKGROUND: A number of non-motor symptoms occurs in Parkinson Disease (PD), cognitive decline and mood disturbances representing the most prevalent. Recent studies reported that cognitive training could potentially help to attenuate cognitive deficits in patients with PD and several researches demonstrated a beneficial effect of active transcranial Direct Current Stimulation (tDCS) over the left dorsolateral prefrontal cortex (anode over left dorsolateral prefrontal cortex, cathode over right supraorbital area) on cognitive deficits and mood disturbances...
July 18, 2018: Brain Stimulation
Lidia Y X Wong, Stephen J Gray, David A Gallo
We report 4 experiments aiming to replicate and extend the finding that anodal transcranial direct current stimulation (tDCS) over dorsolateral prefrontal cortex after encoding and just prior to retrieval improves accuracy on a recollection task (Gray, Brookshire, Casasanto, & Gallo, 2015). Our first 3 experiments failed to replicate the tDCS effect in planned analyses, but post-hoc analyses uncovered tDCS effects on recollection accuracy during morning sessions. To further investigate, Experiment 4 randomly assigned participants to morning or afternoon sessions...
July 23, 2018: Cognitive Neuroscience
Dale M Harris, Timo Rantalainen, Makii Muthalib, Liam Johnson, Rachel L Duckham, Stuart T Smith, Robin M Daly, Wei-Peng Teo
BACKGROUND: People with Parkinson's disease (PD) commonly experience postural instability, resulting in poor balance and an increased risk of falls. Exercise-based video gaming (exergaming) is a form of physical training that is delivered through virtual reality technology to facilitate motor learning and is efficacious in improving balance in aged populations. In addition, studies have shown that anodal transcranial direct current stimulation (a-tDCS), when applied to the primary motor cortex, can augment motor learning when combined with physical training...
July 16, 2018: Trials
Sara Cocco, Maria V Podda, Claudio Grassi
In the recent years numerous studies have provided encouraging results supporting the use of transcranial direct current stimulation (tDCS) as non-invasive brain stimulation technique to improve motor and cognitive functions in patients suffering from neurological and neuropsychiatric disorders as well as in healthy subjects. Among the multiple effects elicited by tDCS on cognitive functions, experimental evidence and clinical findings have highlighted the beneficial impact on long-term memory. Memory deficits occur during physiological aging as well as in neurological and neurodegenerative disorders, including Alzheimer's disease (AD)...
2018: Frontiers in Neuroscience
Marko Mikkonen, Ilkka Laakso, Motofumi Sumiya, Soichiro Koyama, Akimasa Hirata, Satoshi Tanaka
Transcranial direct current stimulation (TDCS) modulates cortical activity and influences motor and cognitive functions in both healthy and clinical populations. However, there is large inter-individual variability in the responses to TDCS. Computational studies have suggested that inter-individual differences in cranial and brain anatomy may contribute to this variability via creating varying electric fields in the brain. This implies that the electric fields or their strength and orientation should be considered and incorporated when selecting the TDCS dose...
2018: Frontiers in Neuroscience
Judit Málly, Trevor W Stone, Gabriella Sinkó, Noémi Geisz, Elek Dinya
BACKGROUND: Transcranial magnetic stimulation (rTMS) may influence the progression of PD compared with levodopa. The long term mind modification effect of repeated rTMS and tDCS is not known, nor are the predictors for the effect of NBS. OBJECTIVE/HYPOTHESIS: We hypothesized that the regularly repeated rTMS would decrease the development of PD. Later, the treatment protocol was completed with transcranial direct current stimulation (tDCS), supposing that there is an add-on effect...
June 26, 2018: Brain Research Bulletin
Irina Papazova, Wolfgang Strube, Benedikt Becker, Bettina Henning, Tobias Schwippel, Andreas J Fallgatter, Frank Padberg, Ulrich Palm, Peter Falkai, Christian Plewnia, Alkomiet Hasan
Deficits in various cognitive processes, such as working memory, are characteristic for schizophrenia, lowering patients' functioning and quality of life. Recent research suggests that transcranial direct stimulation (tDCS) applied to the dorsolateral prefrontal cortex (DLPFC) may be a potential therapeutic intervention for cognitive deficits in schizophrenia. Here, we examined the effects of online tDCS to the DLPFC on working memory (WM) performance in 40 schizophrenia patients in two separate experiments with a double blind, sham-controlled, cross-over design...
June 25, 2018: Schizophrenia Research
Joyce Gomes-Osman, Aprinda Indahlastari, Peter J Fried, Danylo L F Cabral, Jordyn Rice, Nicole R Nissim, Serkan Aksu, Molly E McLaren, Adam J Woods
The impact of cognitive aging on brain function and structure is complex, and the relationship between aging-related structural changes and cognitive function are not fully understood. Physiological and pathological changes to the aging brain are highly variable, making it difficult to estimate a cognitive trajectory with which to monitor the conversion to cognitive decline. Beyond the information on the structural and functional consequences of cognitive aging gained from brain imaging and neuropsychological studies, non-invasive brain stimulation techniques such as transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS) can enable stimulation of the human brain in vivo , offering useful insights into the functional integrity of intracortical circuits using electrophysiology and neuromodulation...
2018: Frontiers in Aging Neuroscience
Li-Chuan Yang, Ping Ren, Yuan-Ye Ma
The dorsolateral prefrontal cortex (DLPFC) is considered to play a crucial role in many high-level functions, such as cognitive control and emotional regulation. Many studies have reported that the DLPFC can be activated during the processing of emotional information in tasks requiring working memory. However, it is still not clear whether modulating the activity of the DLPFC influences emotional perception in a detection task. In the present study, using transcranial direct-current stimulation (tDCS), we investigated (1) whether modulating the right DLPFC influences emotional face processing in a detection task, and (2) whether the DLPFC plays equal roles in processing positive and negative emotional faces...
June 14, 2018: Neuroscience Bulletin
Katherine R Naish, Lana Vedelago, James MacKillop, Michael Amlung
BACKGROUND: Individuals with substance use and addictive disorders often display greater risk-taking behaviour, higher impulsivity, and altered reward processing compared to individuals without these disorders. While it is not known whether cognitive biases precede or result from addictive behaviour, they likely influence addiction-related decision-making, and may facilitate pathological behaviour. There is evidence that cognitive functions-including those shown to be altered in substance use and addictive disorders-can be influenced by neuromodulation techniques (specifically, transcranial direct current stimulation and transcranial magnetic stimulation)...
June 26, 2018: Systematic Reviews
Aron T Hill, Nigel C Rogasch, Paul B Fitzgerald, Kate E Hoy
BACKGROUND: Previous research has typically focussed on the neuromodulatory effects of direct currents applied over single regions of the cortex. However, complex processes such as working memory (WM) strongly rely on activations across a wider neural network and therefore might benefit from stimulation administered over multiple cortical targets. OBJECTIVE: We examined the neurobiological and cognitive effects of High-Definition transcranial direct current stimulation (HD-tDCS) montages that either targeted the dorsolateral prefrontal cortex (DLPFC) alone, or simultaneously stimulated the DLPFC and parietal cortex (DLPFC + PC)...
June 18, 2018: Brain Stimulation
Laura Ludovica Gramegna, Stefania Evangelisti, Claudia Testa, Simone Baiardi, Micaela Mitolo, Sabina Capellari, Andrea Stracciari, Roberto Poda, Vitantonio Di Stasi, Lucia Cretella, Raffaele Lodi, Caterina Tonon, Rocco Liguori
BACKGROUND Posterior cortical atrophy (PCA) is a neurodegenerative syndrome that accounts for 5% of the atypical presentation of Alzheimer disease (AD). To date, only a few studies have explored the effect of non-pharmacological treatment in PCA patients and no studies have evaluated the efficacy of transcranial direct current stimulation (tDCS) in this disorder. CASE REPORT A 58-year-old PCA patient underwent a cognitive rehabilitation treatment followed by 2 cycles of tDCS stimulation. The effects of both treatments were monitored over time with a standardized task-based fMRI protocol and with a neuropsychological assessment...
June 21, 2018: American Journal of Case Reports
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