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TDCS COGNITION

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https://www.readbyqxmd.com/read/28523976/the-application-of-tdcs-for-the-treatment-of-psychiatric-diseases
#1
Min-Fang Kuo, Po-See Chen, Michael A Nitsche
Neuroplasticity represents the dynamic structural and functional reorganization of the central nervous system, including its connectivity, due to environmental and internal demands. It is recognized as a major physiological basis for adaption of cognition and behaviour, and, thus, of utmost importance for normal brain function. Cognitive dysfunctions are major symptoms in psychiatric disorders, which are often associated with pathological alteration of neuroplasticity. Transcranial direct current stimulation (tDCS), a recently developed non-invasive brain stimulation technique, is able to induce and modulate cortical plasticity in humans via the application of relatively weak current through the scalp of the head...
April 2017: International Review of Psychiatry
https://www.readbyqxmd.com/read/28512443/transcranial-direct-current-stimulation-for-post-concussion-syndrome-study-protocol-for-a-randomized-crossover-trial
#2
Robson Luis Oliveira de Amorim, André Russowsky Brunoni, Mirian Akiko Furutani de Oliveira, Ana Luiza Costa Zaninotto, Marcia Mitie Nagumo, Vinícius Monteiro de Paula Guirado, Iuri Santana Neville, Gláucia Rosana Guerra Benute, Mara Cristina Souza de Lucia, Wellingson Silva Paiva, Almir Ferreira de Andrade, Manoel Jacobsen Teixeira
BACKGROUND: Mild traumatic brain injury (MTBI) represents 70-80% of all treated brain injuries. A considerable proportion of MTBI patients experience post-concussion symptoms for a prolonged period after MTBI, and these symptoms are diagnosed as persistent post-concussion syndrome (PPCS). PPCS is defined as a range of physical, cognitive, and emotional symptoms. However, memory and executive dysfunction seems to be one of the most debilitating symptoms. Recently, non-invasive brain stimulation has been studied as a potential treatment method for traumatic brain injury (TBI) patients...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28509625/direct-current-stimulation-does-little-to-improve-the-outcome-of-working-memory-training-in-older-adults
#3
Jonna Nilsson, Alexander V Lebedev, Anders Rydström, Martin Lövdén
The promise of transcranial direct-current stimulation (tDCS) as a modulator of cognition has appealed to researchers, media, and the general public. Researchers have suggested that tDCS may increase effects of cognitive training. In this study of 123 older adults, we examined the interactive effects of 20 sessions of anodal tDCS over the left prefrontal cortex (vs. sham tDCS) and simultaneous working memory training (vs. control training) on change in cognitive abilities. Stimulation did not modulate gains from pre- to posttest on latent factors of either trained or untrained tasks in a statistically significant manner...
May 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28505499/clinical-predictors-of-acute-response-to-transcranial-direct-current-stimulation-tdcs-in-major-depression
#4
Giordano D'Urso, Bernardo Dell'Osso, Rodolfo Rossi, Andre Russowsky Brunoni, Marco Bortolomasi, Roberta Ferrucci, Alberto Priori, Andrea de Bartolomeis, Alfredo Carlo Altamura
BACKGROUND: Transcranial direct current stimulation (tDCS) is a promising neuromodulation intervention for poor-responding or refractory depressed patients. However, little is known about predictors of response to this therapy. The present study aimed to analyze clinical predictors of response to tDCS in depressed patients. METHODS: Clinical data from 3 independent tDCS trials on 171 depressed patients (including unipolar and bipolar depression), were pooled and analyzed to assess predictors of response...
May 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28502585/frontoparietal-neurostimulation-modulates-working-memory-training-benefits-and-oscillatory-synchronization
#5
Kevin T Jones, Dwight J Peterson, Kara J Blacker, Marian E Berryhill
There is considerable interest in maintaining working memory (WM) because it is essential to accomplish most cognitive tasks, and it is correlated with fluid intelligence and ecologically valid measures of daily living. Toward this end, WM training protocols aim to improve WM capacity and extend improvements to unpracticed domains, yet success is limited. One emerging approach is to couple WM training with transcranial direct current stimulation (tDCS). This pairing of WM training with tDCS in longitudinal designs promotes behavioral improvement and evidence of transfer of performance gains to untrained WM tasks...
May 11, 2017: Brain Research
https://www.readbyqxmd.com/read/28487249/combining-tdcs-with-prismatic-adaptation-for-non-invasive-neuromodulation-of-the-motor-cortex
#6
Martina Bracco, Giuseppa Renata Mangano, Patrizia Turriziani, Daniela Smirni, Massimiliano Oliveri
BACKGROUND: Prismatic adaptation (PA) shifts visual field laterally and induces lateralized deviations of spatial attention. Recently, it has been suggested that prismatic goggles are also able to modulate brain excitability, with cognitive after-effects documented even in tasks not necessarily spatial in nature. OBJECTIVE: The aim of the present study was to test whether neuromodulatory effects obtained from tDCS and prismatic goggles could interact and induce homeostatic changes in corticospinal excitability...
May 6, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28485663/can-8-months-of-daily-tdcs-application-slow-the-cognitive-decline-in-alzheimer-s-disease-a-case-study
#7
Martin Bystad, Ingrid Daae Rasmussen, Ole Grønli, Per M Aslaksen
This case study presents a patient with early-onset Alzheimer`s disease, who applied transcranial direct current stimulation (tDCS) daily for 8 consecutive months. This was a much higher frequency than previous tDCS studies. Neuropsychological assessments were conducted before the first tDCS session, after 5 months and after 8 months. After 8 months, the patient's immediate recall improved with 39%, whereas delayed recall improved 23%. Overall, the results revealed that patient's cognitive functions were stabilized...
May 9, 2017: Neurocase
https://www.readbyqxmd.com/read/28474552/new-directions-in-the-use-of-brain-stimulation-interventions-in-patients-with-obsessive-compulsive-disorder
#8
Bernardo Dell'Osso, Laura Cremaschi, Lucio Oldani, Altamura Alfredo Carlo
Obsessive-Compulsive Disorder (OCD) is a highly disabling condition with early onset and chronic course in most of the affected patients. In addition, OCD may show high comorbidity and suicide attempt rates, which worsen the overall burden of the disease for patients and their caregivers. First-line treatments for OCD consist of pro-serotonergic compounds and cognitive-behavioral therapy. Nonetheless, many patients show only limited benefit from such interventions and require additional "next-step" interventions, including augmentative antipsychotics and glutamate-modulating agents...
May 4, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28472633/the-effect-of-left-frontal-transcranial-direct-current-stimulation-on-propranolol-induced-fear-memory-acquisition-and-consolidation-deficits
#9
Mohammad Nasehi, Mozhgan Khani-Abyaneh, Mohaddeseh Ebrahimi-Ghiri, Mohammad-Reza Zarrindast
Accumulating evidence supports the efficacy of transcranial direct current stimulation (tDCS) in modulating numerous cognitive functions. Despite the fact that tDCS has been used for the enhancement of memory and cognition, very few animal studies have addressed its impact on the modulation of fear memory. This study was designed to determine whether pre/post-training frontal tDCS application would alter fear memory acquisition and/or consolidation deficits induced by propranolol in NMRI mice. Results indicated that administration of β1-adrenoceptor blocker propranolol (0...
May 1, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28469204/compromised-neuroplasticity-in-cigarette-smokers-under-nicotine-withdrawal-is-restituted-by-the-nicotinic-%C3%AE-4%C3%AE-2-receptor-partial-agonist-varenicline
#10
G Batsikadze, W Paulus, A Hasan, J Grundey, M-F Kuo, M A Nitsche
Nicotine modulates neuroplasticity and improves cognitive functions in animals and humans. In the brain of smoking individuals, calcium-dependent plasticity induced by non-invasive brain stimulation methods such as transcranial direct current stimulation (tDCS) and paired associative stimulation (PAS) is impaired by nicotine withdrawal, but partially re-established after nicotine re-administration. In order to investigate the underlying mechanism further, we tested the impact of the α4β2-nicotinic receptor partial agonist varenicline on focal and non-focal plasticity in smokers during nicotine withdrawal, induced by PAS and tDCS, respectively...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28460127/effects-of-combining-a-brief-cognitive-intervention-with-transcranial-direct-current-stimulation-on-pain-tolerance-a-randomized-controlled-pilot-study
#11
Abigail Powers, Alok Madan, Megan Hilbert, Scott T Reeves, Mark George, Michael R Nash, Jeffrey J Borckardt
Objective.:  Cognitive behavioral therapy has been shown to be effective for treating chronic pain, and a growing literature shows the potential analgesic effects of minimally invasive brain stimulation. However, few studies have systematically investigated the potential benefits associated with combining approaches. The goal of this pilot laboratory study was to investigate the combination of a brief cognitive restructuring intervention and transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex in affecting pain tolerance...
April 26, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28444373/plasticity-of-the-right-lateralized-cognitive-reserve-network-in-ageing
#12
Méadhbh B Brosnan, Giorgia Demaria, Anders Petersen, Paul M Dockree, Ian H Robertson, Iris Wiegand
Cognitive reserve (CR) is the phenomenon where older adults with more cognitively stimulating environments show less age-related cognitive decline. The right-lateralized fronto-parietal network has been proposed to significantly contribute to CR and visual attention in ageing. In this study we tested whether plasticity of this network may be harnessed in ageing.We assessed CR and parameters of visual attention capacity in older adults. Transcranial direct current stimulation (tDCS) was employed to increase right fronto-parietal activity during a lateralized whole-report task...
April 24, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28444345/causal-evidence-for-task-specific-involvement-of-the-dorsomedial-prefrontal-cortex-in-human-social-cognition
#13
Andrew K Martin, I Ilvana Dzafic, Swathi Ramdave, Marcus Meinzer
The dorsomedial prefrontal cortex (dmPFC) is a key hub of the "social brain", but little is known about specific processes supported by this region. Using focal high-definition transcranial direct current stimulation (HD-tDCS) and a social cognitive battery with differing demands on self-other processing, we demonstrate specific involvement of the dmPFC in tasks placing high demands on self-other processing. Specifically, excitatory (anodal) HD-tDCS enhanced the integration of external information into the self for explicit higher-order socio-cognitive tasks across cognitive domains; i...
April 21, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28443011/the-lateral-occipito-temporal-cortex-is-involved-in-the-mental-manipulation-of-body-part-imagery
#14
Mitsuru Kikuchi, Tetsuya Takahashi, Tetsu Hirosawa, Yumi Oboshi, Etsuji Yoshikawa, Yoshio Minabe, Yasuomi Ouchi
The lateral occipito-temporal cortex (LOTC), including the extrastriate body area, is known to be involved in the perception of body parts. Although still controversial, recent studies have demonstrated the role of the LOTC in higher-level body-related cognition in humans. This study consisted of two experiments (E1 and E2). The first (E1) was an exploratory experiment to find the neural correlate of the mental manipulation of body part imagery, in which brain cerebral glucose metabolic rates and the performance of mental rotation of the hand were measured in 100 subjects who exhibited a range of symptoms of cognitive decline...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28424645/cerebellar-tdcs-does-not-enhance-performance-in-an-implicit-categorization-learning-task
#15
Marie C Verhage, Eric O Avila, Maarten A Frens, Opher Donchin, Jos N van der Geest
Background: Transcranial Direct Current Stimulation (tDCS) is a form of non-invasive electrical stimulation that changes neuronal excitability in a polarity and site-specific manner. In cognitive tasks related to prefrontal and cerebellar learning, cortical tDCS arguably facilitates learning, but the few studies investigating cerebellar tDCS, however, are inconsistent. Objective: We investigate the effect of cerebellar tDCS on performance of an implicit categorization learning task. Methods: Forty participants performed a computerized version of an implicit categorization learning task where squares had to be sorted into two categories, according to an unknown but fixed rule that integrated both the size and luminance of the square...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28419862/the-effect-of-tdcs-over-the-right-temporo-parietal-junction-on-pain-empathy
#16
Michel-Pierre Coll, Marie-Pier B Tremblay, Philip L Jackson
Empathy is a complex psychological phenomenon crucial for social perception and interactions. Several lines of evidence suggest that the right temporo-parietal junction is involved in self-other control mechanisms that play an important role in empathic responses. However, limited direct evidence of the involvement of this region in empathic responses is currently available. In this study, inhibitory transcranial direct current stimulation over this region influenced empathic responses to others' pain. It was found that compared to participants that received anodal or sham transcranial direct current stimulation, participants who received cathodal transcranial direct current stimulation over the right temporo-parietal junction perceived the pain of others as less intense compared to sham stimulation and showed decreased late event related potentials to facial expressions of pain...
April 15, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28390970/transcranial-direct-current-stimulation-can-enhance-working-memory-in-huntington-s-disease
#17
Clare M Eddy, Kimron Shapiro, Andrew Clouter, Peter C Hansen, Hugh E Rickards
Transcranial direct current stimulation (tDCS) combined with a cognitive task can enhance targeted aspects of cognitive functioning in clinical populations. The movement disorder Huntington's disease (HD) is associated with progressive cognitive impairment. Deficits in working memory (WM) can be apparent early in the disease and impact functional capacity. We investigated whether tDCS combined with cognitive training could improve WM in patients with HD, and if baseline clinical or cognitive measures may predict efficacy...
April 5, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28384480/l-tyrosine-administration-modulates-the-effect-of-transcranial-direct-current-stimulation-on-working-memory-in-healthy-humans
#18
Bryant J Jongkees, Roberta Sellaro, Christian Beste, Michael A Nitsche, Simone Kühn, Lorenza S Colzato
BACKGROUND: Transcranial direct current stimulation (tDCS) is an increasingly popular method of modulating cognitive functions in humans. However, some doubt its efficacy as findings are inconsistent or remain unreplicated. It is speculated dopamine (DA) might play an important role in this inconsistency, by determining the direction and strength of the cognitive-behavioral effects of tDCS. However, so far evidence for this hypothesis has been correlational in nature, precluding definitive conclusions...
March 10, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28326031/can-neuromodulation-also-enhance-social-inequality-some-possible-indirect-interventions-of-the-state
#19
Andrea Lavazza
There is evidence that noninvasive brain stimulation (NIBS), and especially transcranial direct current stimulation (tDCS), can improve some cognitive functions, at least temporarily. However, as the improvement only applies to some "lucky" people, it may raise ethical, social and legal issues related to fairness in selective contexts (exams, competitions, job interviews). In this regard, an important element tends to be overlooked: the variability in individual response to tDCS in particular. If intensive study or practice and massive doses of chemical enhancers can have slightly different effects over different people, tDCS can sometimes be completely ineffective...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28286676/cerebellar-cathodal-transcranial-direct-stimulation-and-performance-on-a-verb-generation-task-a-replication-study
#20
K Spielmann, R van der Vliet, W M E van de Sandt-Koenderman, M A Frens, G M Ribbers, R W Selles, S van Vugt, J N van der Geest, P Holland
The role of the cerebellum in cognitive processing is increasingly recognized but still poorly understood. A recent study in this field applied cerebellar Transcranial Direct Current Stimulation (c-tDCS) to the right cerebellum to investigate the role of prefrontal-cerebellar loops in language aspects of cognition. Results showed that the improvement in participants' verbal response times on a verb generation task was facilitated immediately after cathodal c-tDCS, compared to anodal or sham c-tDCS. The primary aim of the present study is to replicate these findings and additionally to investigate possible longer term effects...
2017: Neural Plasticity
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