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Transcranial direct current stimulation

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https://www.readbyqxmd.com/read/28642729/inconsistent-effects-of-parietal-%C3%AE-tacs-on-pseudoneglect-across-two-experiments-a-failed-internal-replication
#1
Domenica Veniero, Christopher S Y Benwell, Merle M Ahrens, Gregor Thut
Transcranial electrical stimulation (tES) is being investigated as an experimental and clinical interventional technique in human participants. While promising, important limitations have been identified, including weak effect sizes and high inter- and intra-individual variability of outcomes. Here, we compared two "inhibitory" tES-techniques with supposedly different mechanisms of action as to their effects on performance in a visuospatial attention task, and report on a direct replication attempt. In two experiments, 2 × 20 healthy participants underwent tES in three separate sessions testing different protocols (10 min stimulation each) with a montage targeting right parietal cortex (right parietal-left frontal, electrode-sizes: 3cm × 3cm-7 cm × 5 cm), while performing a perceptual line bisection (landmark) task...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28641161/postural-control-in-blind-individuals-a-systematic-review
#2
REVIEW
Rodolfo Borges Parreira, Luanda André Collange Grecco, Claudia Santos Oliveira
Postural control (PC) requires the interaction of the three sensory systems for a good maintenance of the balance, and in blind people, lack of visual input can harm your PC. Thus the objective is to perform a literature review concerning role of sight in the maintenance of PC and the adaptation of brain structures when vision is absent. Studies were searched from Pubmed, and EMBASE that included individuals with congenital blindness. Articles studying person with acquired blindness or low vision was excluded from this review...
June 12, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28640159/transcranial-direct-current-stimulation-effects-on-menopausal-vasomotor-symptoms
#3
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/28638351/transcranial-direct-current-stimulation-considerations-for-research-in-adolescent-depression
#4
REVIEW
Jonathan C Lee, Charles P Lewis, Zafiris J Daskalakis, Paul E Croarkin
Adolescent depression is a prevalent disorder with substantial morbidity and mortality. Current treatment interventions do not target relevant pathophysiology and are frequently ineffective, thereby leading to a substantial burden for individuals, families, and society. During adolescence, the prefrontal cortex undergoes extensive structural and functional changes. Recent work suggests that frontolimbic development in depressed adolescents is delayed or aberrant. The judicious application of non-invasive brain stimulation techniques to the prefrontal cortex may present a promising opportunity for durable interventions in adolescent depression...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28638205/effects-of-transcranial-direct-current-stimulation-tdcs-for-auditory-hallucinations-a-systematic-review
#5
Haibin Li, Yiran Wang, Jiangling Jiang, Wei Li, Chunbo Li
BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasion brain stimulation, which has been suggested as a safe and promising treatment for auditory hallucinations, however, no systematic review has been conducted to evaluate the effects of tDCS on auditory hallucinations (AH). OBJECTIVE: To investigate the efficacy and safety of tDCS for auditory hallucinations among patients with schizophrenia. METHODS: We searched relevant randomized controlled trials (RCTs) from PubMed, EMBASE, the Cochrane Library, Chinese National Knowledge Infrastructure, Chongqing VIP database for Chinese Technical Periodicals, WANFANG DATA, Chinese Biological Medical Literature Database, and Taiwan Electronic Periodical Services (TEPS) before February 13, 2016...
December 25, 2016: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/28637840/promoting-sleep-oscillations-and-their-functional-coupling-by-transcranial-stimulation-enhances-memory-consolidation-in-mild-cognitive-impairment
#6
Julia Ladenbauer, Josef Ladenbauer, Nadine Külzow, Rebecca de Boor, Elena Avramova, Ulrike Grittner, Agnes Flöel
Alzheimer's disease (AD) not only involves loss of memory functions but also prominent deterioration of sleep physiology, already evident in the stage of mild cognitive impairment (MCI). Cortical slow oscillations (SO, 0.5-1 Hz) and thalamo-cortical spindle activity (12-15 Hz) during sleep, and their temporal coordination, are considered critical for memory formation. We investigated the potential of slow oscillatory transcranial direct current stimulation (so-tDCS), applied during a daytime nap in a sleep state-dependent manner, to modulate these activity patterns and sleep-related memory consolidation in 9 male and 7 female human patients with MCI...
June 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28632508/combined-dextroamphetamine-and-transcranial-direct-current-stimulation-in-poststroke-aphasia
#7
Zafer Keser, Michelle Weber Dehgan, Shaparak Shadravan, Nuray Yozbatiran, Lynn M Maher, Gerard E Francisco
There is a growing need for various effective adjunctive treatment options for speech recovery after stroke. A pharmacological agent combined with noninvasive brain stimulation has not been previously reported for poststroke aphasia recovery. In this "proof of concept" study, we aimed to test the safety of a combined intervention consisting of dextroamphetamine, transcranial direct current stimulation, and speech and language therapy in subjects with nonfluent aphasia. Ten subjects with chronic nonfluent aphasia underwent two experiments where they received dextroamphetamine or placebo along with transcranial direct current stimulation and speech and language therapy on two separate days...
June 20, 2017: American Journal of Physical Medicine & Rehabilitation
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
#8
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/28629447/transcranial-direct-current-stimulation-for-depression-in-alzheimer-s-disease-study-protocol-for-a-randomized-controlled-trial
#9
Zui Narita, Yuma Yokoi
BACKGROUND: Patients with Alzheimer's disease frequently elicit neuropsychiatric symptoms as well as cognitive deficits. Above all, depression is one of the most common neuropsychiatric symptoms in Alzheimer's disease but antidepressant drugs have not shown significant beneficial effects on it. Moreover, electroconvulsive therapy has not ensured its safety for potential severe adverse events although it does show beneficial clinical effect. Transcranial direct current stimulation can be the safe alternative of neuromodulation, which applies weak direct electrical current to the brain...
June 19, 2017: Trials
https://www.readbyqxmd.com/read/28623732/safety-and-acceptability-of-transcranial-direct-current-stimulation-for-the-acute-treatment-of-major-depressive-episodes-analysis-of-individual-patient-data
#10
Adriano H Moffa, André R Brunoni, Felipe Fregni, Ulrich Palm, Frank Padberg, Daniel M Blumberger, Zafiris J Daskalakis, Djamila Bennabi, Emmanuel Haffen, Angelo Alonzo, Colleen K Loo
BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation modality that has been increasingly used for major depressive disorder (MDD) treatment. Although studies in healthy volunteers showed that the technique is well-tolerated, tDCS safety and acceptability have not been sufficiently explored in patients with MDD. METHODS: We collected individual patient data from 6 randomized clinical trials that had been previously identified in a systematic review and meta-analysis...
June 13, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28623718/transcranial-direct-current-stimulation-tdcs-reveals-a-dissociation-between-snarc-and-marc-effects-implication-for-the-polarity-correspondence-account
#11
Elisa Di Rosa, Lara Bardi, Carlo Umiltà, Fabio Masina, Margherita Forgione, Daniela Mapelli
The concept of stimulus response compatibility (SRC) refers to the existence of a privileged association between a specific stimulus feature and a specific response feature. Two examples of SRC are the Spatial Numerical Association of Response Codes (SNARC) and the Markedness Association of Response Codes (MARC) effects. According to the polarity correspondence principle, these two SRC effects occur because of a match between the most salient dimensions of stimulus and response. Specifically, the SNARC effect would be caused by a match between right-sided responses and large numbers, while a match between right-sided responses and even numbers would give rise to the MARC effect...
May 25, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28616385/neurophysiological-evidence-of-preserved-connectivity-in-tuber-tissue
#12
H L Kaye, J M Peters, R Gersner, M Chamberland, A Sansevere, A Rotenberg
We present a case of preserved corticospinal connectivity in a cortical tuber, in a 10 year-old boy with intractable epilepsy and tuberous sclerosis complex (TSC). The patient had multiple subcortical tubers, one of which was located in the right central sulcus. In preparation for epilepsy surgery, motor mapping, by neuronavigated transcranial magnetic stimulation (nTMS) coupled with surface electromyography (EMG) was performed to locate the primary motor cortical areas. The resulting functional motor map revealed expected corticospinal connectivity in the left precentral gyrus...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28611609/transcranial-direct-current-stimulation-in-post-stroke-chronic-aphasia-the-impact-of-baseline-severity-and-task-specificity-in-a-pilot-sample
#13
Catherine Norise, Daniela Sacchetti, Roy Hamilton
Emerging evidence suggests that transcranial direct current stimulation (tDCS) can improve aspects of language production in persons with chronic non-fluent aphasia due to left hemisphere stroke. However, to date, studies exploring factors that predict response to tDCS in this or any patient population remain sparse, as are studies that investigate the specific aspects of language performance that are most responsive to stimulation. The current study explored factors that could predict recovery of language fluency and which aspects of language fluency could be expected to improve with the identified factor(s)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28611529/non-invasive-stimulation-techniques-to-relieve-abdominal-pelvic-pain-is-more-always-better
#14
COMMENT
Marie-Philippe Harvey, Alain Watier, Émilie Dufort Rouleau, Guillaume Léonard
Chronic abdominal and pelvic pain is a common condition that has significant impact on quality of life, and causes billions of dollars in direct and indirect costs. Emerging data suggest that transcranial direct current stimulation (tDCS), alone or in combination with transcutaneous electrical nerve stimulation (TENS), could be a promising therapeutic avenue to reduce chronic pain. The encouraging results coming from these studies prompted us to try combining TENS and tDCS in 4 of our patients who suffered from chronic abdominal/pelvic pain and to compare the effect with 5 other patients who received TENS alone...
May 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28610848/modulating-phonemic-fluency-performance-in-healthy-subjects-with-transcranial-magnetic-stimulation-over-the-left-or-right-lateral-frontal-cortex
#15
Daniela Smirni, Patrizia Turriziani, Giuseppa Renata Mangano, Martina Bracco, Massimiliano Oliveri, Lisa Cipolotti
A growing body of evidence have suggested that non-invasive brain stimulation techniques, such as transcranial magnetic stimulation (TMS) and transcranial direct current stimulation (tDCS), can improve the performance of aphasic patients in language tasks. For example, application of inhibitory rTMS or tDCs over the right frontal lobe of dysphasic patients resulted in improved naming abilities. Several studies have also reported that in healthy controls (HC) tDCS application over the left prefrontal cortex (PFC) improve performance in naming and semantic fluency tasks...
June 10, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28607219/transcranial-direct-current-stimulation-versus-user-training-on-improving-online-myoelectric-control-for-amputees
#16
Lizhi Pan, Dingguo Zhang, Ning Jiang, Xinjun Sheng, Xiangyang Zhu
OBJECTIVE: Transcranial direct current stimulation (tDCS) and user training (UT) are two types of methods to improve myoelectric control performance for amputees. In this study, we compared the independent effect between tDCS and UT, and investigated the combined effect of tDCS and UT. APPROACH: An online paradigm of simultaneous and proportional control (SPC) based on electromyography (EMG) was adopted. The proposed experiments were conducted on six naïve unilateral trans-radial amputees...
June 13, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28605527/effect-of-transcranial-direct-current-stimulation-of-the-motor-cortex-on-visceral-pain-in-patients-with-hepatocellular-carcinoma
#17
Nagwa Mostafa Ibrahim, Khaled Mohamed Abdelhameed, Shereen Mamdouh Mohamed Kamal, Eman Mohamed Hussein Khedr, Hassan Ibrahim Mohamed Kotb
Objective. : Hepatocellular carcinoma (HCC) is frequently associated with visceral pain. Transcranial direct current stimulation (tDCS) has been proven to reduce chronic pain; however, its effectiveness in malignant visceral pain is unknown. This study aimed to investigate the effects of tDCS in patients with visceral pain due to HCC. Design. : This is a randomized, sham-controlled, double-blind, prospective study. Forty patients with visceral pain due to HCC were enrolled and randomly assigned into two groups: a real and a sham group; tDCS was applied over the primary motor area (M1) for 10 consecutive days (2 mA, 30 minutes)...
June 12, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28605386/simultaneous-transcranial-alternating-current-stimulation-and-functional-magnetic-resonance-imaging
#18
Kathleen A Williams, Yuranny Cabral-Calderin, Carsten Schmidt-Samoa, Christiane Anne Weinrich, Peter Dechent, Melanie Wilke
Transcranial alternating current stimulation (tACS) is a promising tool for noninvasive investigation of brain oscillations. TACS employs frequency-specific stimulation of the human brain through current applied to the scalp with surface electrodes. Most current knowledge of the technique is based on behavioral studies; thus, combining the method with brain imaging holds potential to better understand the mechanisms of tACS. Because of electrical and susceptibility artifacts, combining tACS with brain imaging can be challenging, however, one brain imaging technique that is well suited to be applied simultaneously with tACS is functional magnetic resonance imaging (fMRI)...
June 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28602998/the-right-hemisphere-is-independent-from-the-left-hemisphere-in-allocating-visuospatial-attention
#19
Arianna Zuanazzi, Luigi Cattaneo
The capacity to allocate visuospatial attention is traditionally considered right-lateralized according to the effects of unilateral cerebral lesions. Contralateral hemi-spatial neglect occurs much more frequently after lesions of the right hemisphere, which has therefore been dubbed as 'dominant'. This pattern of symptoms is supported by functional models that postulate either independence or reciprocal influences between the two hemispheres. Here we specifically explored the dependency of the right hemisphere (RH) from the left hemisphere (LH) in spatial attention...
June 9, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28593094/anodal-transcranial-direct-current-stimulation-tdcs-increases-isometric-strength-of-shoulder-rotators-muscles-in-handball-players
#20
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
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