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Transcranial stimulation

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https://www.readbyqxmd.com/read/28813921/effect-on-the-classification-of-motor-imagery-in-eeg-after-applying-anodal-tdcs-with-a-4%C3%A3-1-ring-montage-over-the-motor-cortex
#1
I N Angulo-Sherman, M Rodriguez-Ugarte, E Ianez, M Ortiz, J M Azorin
Transcranial direct stimulation (tDCS) is a technique for modulating brain excitability that has potential to be used in motor neurorehabilitation by enhancing motor activity, such as motor imagery (MI). tDCS effects depend on different factors, like current density and the position of the stimulating electrodes. This study presents preliminary results of the evaluation of the effect of current density on MI performance by measuring right-hand/feet MI accuracy of classification from electroencephalographic (EEG) measurements after anodal tDCS is applied with a 4×1 ring montage over the right-hand or feet motor cortex...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813878/randomized-sham-controlled-trial-based-on-transcranial-direct-current-stimulation-and-wrist-robot-assisted-integrated-treatment-on-subacute-stroke-patients-intermediate-results
#2
Stefano Mazzoleni, Vi Do Tran, Laura Iardella, Paolo Dario, Federico Posteraro
The main goal of this study is to analyse the effects of combined transcranial direct current stimulation (tDCS) and wrist robot-assisted therapy in subacute stroke patients. Twenty-four patients were included in this study and randomly assigned to the experimental (EG) or control group (CG). All participants performed wrist robot-assisted training a) in conjunction with tDCS (real stimulation for patients in EG) or b) without tDCS (sham stimulation for patients in CG). Clinical scales and kinematic parameters recorded by the robot were used for the assessment...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813867/therapeutic-effects-of-anti-gravity-treadmill-alterg-training-on-reflex-hyper-excitability-corticospinal-tract-activities-and-muscle-stiffness-in-children-with-cerebral-palsy
#3
Sh Parvin, A Taghiloo, A Irani, M Mehdi Mirbagheri
We aimed to study therapeutic effects of antigravity treadmill (AlterG) training on reflex hyper-excitability, muscle stiffness, and corticospinal tract (CST) function in children with spastic hemiplegic cerebral palsy (CP). Three children received AlterG training 3 days per week for 8 weeks as experimental group. Each session lasted 45 minutes. One child as control group received typical occupational therapy for the same amount of time. We evaluated hyper-excitability of lower limb muscles by H-reflex response...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813353/motor-cognition-and-neuroscience-in-sport-psychology
#4
REVIEW
Paul S Holmes, David J Wright
Advances in technology have allowed research in cognitive neuroscience to contribute significantly to the discipline of sport psychology. In most cases, the research has become more rigorous and has directed current thinking on the mechanisms subserving a number of psychological theories and models of practice. Currently, the three most common neuroscience techniques informing sport and exercise research are electroencephalography, transcranial magnetic stimulation and functional magnetic resonance imaging...
August 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28807846/the-reliability-of-commonly-used-electrophysiology-measures
#5
K E Brown, K R Lohse, I M S Mayer, G Strigaro, M Desikan, E P Casula, S Meunier, T Popa, J-C Lamy, O Odish, B R Leavitt, A Durr, R A C Roos, S J Tabrizi, J C Rothwell, L A Boyd, M Orth
BACKGROUND: Electrophysiological measures can help understand brain function both in healthy individuals and in the context of a disease. Given the amount of information that can be extracted from these measures and their frequent use, it is essential to know more about their inherent reliability. OBJECTIVE/HYPOTHESIS: To understand the reliability of electrophysiology measures in healthy individuals. We hypothesized that measures of threshold and latency would be the most reliable and least susceptible to methodological differences between study sites...
July 31, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28807845/1-hz-rtms-in-the-treatment-of-tinnitus-a-sham-controlled-randomized-multicenter-trial
#6
Michael Landgrebe, Göran Hajak, Stefan Wolf, Frank Padberg, Philipp Klupp, Andreas J Fallgatter, Thomas Polak, Jacqueline Höppner, Rene Haker, Joachim Cordes, Thomas Klenzner, Carlos Schönfeldt-Lecuona, Thomas Kammer, Erika Graf, Michael Koller, Tobias Kleinjung, Astrid Lehner, Martin Schecklmann, Timm B Pöppl, Peter Kreuzer, Elmar Frank, Berthold Langguth
BACKGROUND: Chronic tinnitus is a frequent, difficult to treat disease with high morbidity. OBJECTIVE: This multicenter randomized, sham-controlled trial investigated the efficacy and safety of 1-Hz repetitive transcranial magnetic stimulation (rTMS) applied to the left temporal cortex in patients with chronic tinnitus. METHODS: Tinnitus patients were randomized to receive 10 sessions of either real or sham 1-Hz-rTMS (2000 stimuli, 110% motor threshold) to the left temporal cortex...
August 5, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28807648/not-all-visual-symmetry-is-equal-partially-distinct-neural-bases-for-vertical-and-horizontal-symmetry
#7
Zaira Cattaneo, Silvia Bona, Juha Silvanto
Visual mirror symmetry plays an important role in visual perception in both human and animal vision; its importance is reflected in the fact that it can be extracted automatically during early stages of visual processing. However, how this extraction is implemented at the cortical level remains an open question. Given the importance of symmetry in visual perception, one possibility is that there is a network which extracts all types of symmetry irrespective of axis of orientation; alternatively, symmetry along different axes might be encoded by different brain regions, implying that that there is no single neural mechanism for symmetry processing...
August 11, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28806104/repetitive-transcranial-magnetic-stimulation-rtms-administration-to-heavy-cannabis-users
#8
Gregory L Sahlem, Nathaniel L Baker, Mark S George, Robert J Malcolm, Aimee L McRae-Clark
BACKGROUND: Cannabis use disorder (CUD) is a common condition with few treatments. Several studies in other substance use disorders have found that applying repetitive transcranial magnetic stimulation (rTMS) to the dorsolateral prefrontal cortex (DLPFC) decreases cue-elicited craving and possibly decreases use. To date, there have been no studies attempting to use rTMS in CUD. OBJECTIVES: This study was conducted to determine if rTMS could be feasibly delivered to a group of non-treatment seeking CUD participants...
August 14, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28805756/-an-experience-of-neurophysiological-monitoring-in-neurosurgery
#9
A G Vasyatkina, E A Levin, K Yu Orlov, V V Kobozev
AIM: To evaluate the efficacy of neuromonitoring methods in prevention of postoperative neurological complications and estimation of predictive power of intraoperative changes in monitored characteristics. MATERIAL AND METHODS: Retrospective study examined 240 patients, operated in the years 2014-2015 using intraoperative neurophysiological monitoring. One hundred and seventy-three patients suffered from hemispheric lesions and 67 had lesions located in or near the brainstem...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28805565/noninvasive-brain-stimulation-and-implications-for-nonmotor-symptoms-in-parkinson-s-disease
#10
Irena Rektorová, Ľubomíra Anderková
Transcranial noninvasive brain stimulation includes both repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS). TMS uses a rapidly changing magnetic field to induce currents and action potentials in underlying brain tissue, whereas tDCS involves the application of weak electrical currents to modulate neuronal membrane potential. In this chapter, we provide a literature review with a focus on the therapeutic potential of both techniques in the treatment of nonmotor symptoms of Parkinson's disease (PD)...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28805107/effects-of-high-frequency-repetitive-transcranial-magnetic-stimulation-on-reducing-hemiplegic-shoulder-pain-in-patients-with-chronic-stoke-a-randomized-controlled-trial
#11
Gyu-Sik Choi, Min Cheol Chang
OBJECTIVE: To examine whether high-frequency (10 Hz) repetitive transcranial magnetic stimulation (rTMS), applied over the primary motor cortex of the affected hemisphere, could be used to manage hemiplegic shoulder pain (HSP). METHODS: Twenty-four chronic stroke patients with chronic HSP, randomly assigned into the rTMS group (10 sessions of high-frequency stimulation) or the sham group (sham stimulation), was performed. The Numeric Rating Scale (NRS) was used to evaluate the intensity of pain at pre-treatment, and at one day, and one, two, and four weeks after treatment...
August 12, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28804455/comparison-of-the-long-term-effect-of-positioning-the-cathode-in-tdcs-in-tinnitus-patients
#12
Sarah Rabau, Giriraj S Shekhawat, Mohamed Aboseria, Daniel Griepp, Vincent Van Rompaey, Marom Bikson, Paul Van de Heyning
Objective: Transcranial direct current stimulation (tDCS) is one of the methods described in the literature to decrease the perceived loudness and distress caused by tinnitus. However, the main effect is not clear and the number of responders to the treatment is variable. The objective of the present study was to investigate the effect of the placement of the cathode on the outcome measurements. Methods: Patients considered for the trial were chronic non-pulsatile tinnitus patients with complaints for more than 3 months and a Tinnitus Functional Index (TFI) score that exceeded 25...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28803382/cortical-afferent-inhibition-abnormalities-reveal-cholinergic-dysfunction-in-parkinson-s-disease-a-reappraisal
#13
REVIEW
Raffaele Nardone, Francesco Brigo, Viviana Versace, Yvonne Höller, Frediano Tezzon, Leopold Saltuari, Eugen Trinka, Luca Sebastianelli
Parkinson's disease (PD) is a multisystem neurodegenerative disorder affecting, besides the dopaminergic function, multiple neurotransmission systems, including the cholinergic system. Central cholinergic circuits of human brain can be tested non-invasively by coupling peripheral nerve stimulation with transcranial magnetic stimulation (TMS) of motor cortex; this test is named short latency afferent inhibition (SAI). SAI abnormalities have been reported in PD patients with gait disturbances and many non-motor symptoms, such as visual hallucinations (VHs), REM sleep behavior disorder (RBD), dysphagia, and olfactory impairment...
August 12, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28802935/depression-and-anxiety-in-parkinson-s-disease
#14
Anette Schrag, Raquel N Taddei
Depression and anxiety are some of the most common comorbidities arising in patients with Parkinson's disease. However, their timely recognition and diagnosis are often hindered by overlap with other somatic features and a low rate of self-report. There is a need for greater awareness and for better assessment and treatment options are highly required. Currently available scales can serve as tools to monitor change over time and the effect of interventional strategies. Development of new therapeutic strategies, including nonpharmacological approaches such as transcranial magnetic stimulation and deep brain stimulation, may provide alternatives to currently available treatment approaches...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28802812/noninvasive-brain-stimulation-improves-hemispatial-neglect-after-stroke-a-systematic-review-and-meta-analysis
#15
REVIEW
Ana Paula S Salazar, Patrícia G Vaz, Ritchele R Marchese, Cinara Stein, Camila Pinto, Aline S Pagnussat
OBJECTIVE: To evaluate the effectiveness of noninvasive brain stimulation (NIBS) - repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS) - on hemispatial neglect and performance in activities of daily living (ADL) after stroke. DATA SOURCES: MEDLINE (Pubmed), Embase, Cochrane CENTRAL, SCOPUS, Scielo and Physiotherapy Evidence Database (PEDro) were searched from database inception to December 2016. DATA SELECTION: Randomized controlled trials or crossover trials focused on determining the effects of tDCS or rTMS combined or not combined with other therapies for hemispatial neglect after stroke...
August 9, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28801420/protocol-study-for-a-randomised-controlled-double-blind-clinical-trial-involving-virtual-reality-and-anodal-transcranial-direct-current-stimulation-for-the-improvement-of-upper-limb-motor-function-in-children-with-down-syndrome
#16
Jamile Benite Palma Lopes, Luanda André Collange Grecco, Renata Calhes Franco de Moura, Roberta Delasta Lazzari, Natalia de Almeida Carvalho Duarte, Isabela Miziara, Gileno Edu Lameira de Melo, Arislander Jonathan Lopes Dumont, Manuela Galli, Claudia Santos Oliveira
INTRODUCTION: Down syndrome results in neuromotor impairment that affects selective motor control, compromising the acquisition of motor skills and functional independence. The aim of the proposed study is to evaluate and compare the effects of multiple-monopolar anodal transcranial direct current stimulation and sham stimulation over the primary motor cortex during upper limb motor training involving virtual reality on motor control, muscle activity, cerebral activity and functional independence...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28800341/robotic-assisted-gait-training-combined-with-transcranial-direct-current-stimulation-in-chronic-stroke-patients-a-pilot-double-blind-randomized-controlled-trial
#17
Han Gil Seo, Woo Hyung Lee, Seung Hak Lee, Youbin Yi, Kwang Dong Kim, Byung-Mo Oh
BACKGROUND: Although robotic-assisted gait training (RAGT) is becoming a standard method in stroke rehabilitation, its effect on chronic stroke patients is uncertain. OBJECTIVE: This study aimed to investigate whether anodal tDCS (transcranial direct current stimulation) enhances the effect of RAGT on functional ambulation in chronic stroke patients. METHODS: Chronic hemiplegic stroke patients with a Functional Ambulatory Category (FAC) score≤4 were randomly assigned to either the RAGT with anodal tDCS (Anodal) group or the sham tDCS (Sham) group...
August 11, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28797624/transcranial-direct-current-stimulation-over-multiple-days-enhances-motor-performance-of-a-grip-task
#18
Julie Fan, Julien Voisin, Marie-Hélène Milot, Johanne Higgins, Marie-Hélène Boudrias
BACKGROUND: Recovery of handgrip is critical after stroke since it is positively related to upper limb function. To boost motor recovery, transcranial direct current stimulation (tDCS) is a promising, non-invasive brain stimulation technique for the rehabilitation of persons with stroke. When applied over the primary motor cortex (M1), tDCS has been shown to modulate neural processes involved in motor learning. However, no studies have looked at the impact of tDCS on the learning of a grip task in both stroke and healthy individuals...
August 7, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28796636/effect-of-tms-coil-orientation-on-the-spatial-distribution-of-motor-evoked-potentials-in-an-intrinsic-hand-muscle
#19
Victor Hugo Souza, Taian Martins Vieira, André Salles Cunha Peres, Marco Antonio Cavalcanti Garcia, Claudia Domingues Vargas, Oswaldo Baffa
Previous reports on the relationship between coil orientation and amplitude of motor evoked potential (MEP) in transcranial magnetic stimulation (TMS) did not consider the effect of electrode arrangement. Here we explore this open issue by investigating whether TMS coil orientation affects the amplitude distribution of MEPs recorded from the abductor pollicis brevis (APB) muscle with a bi-dimensional grid of 61 electrodes. Moreover, we test whether conventional mono- and bipolar montages provide representative MEPs compared to those from the grid of electrodes...
August 10, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28796385/muscle-length-effect-on-corticospinal-excitability-during-maximal-concentric-isometric-and-eccentric-contractions-of-the-knee-extensors
#20
Valentin Doguet, Kazunori Nosaka, Arnaud Guével, Gary Thickbroom, Kazuhiro Ishimura, Marc Jubeau
Neural control of eccentric contractions differs from that of concentric and isometric contractions, but no previous study has compared responses to motor cortex stimulations at long muscle lengths during such contraction types. This study compared the effect of muscle length on corticospinal excitability between maximal concentric, isometric and eccentric contractions of the knee extensors. Twelve males performed 12 maximal concentric, isometric and eccentric voluntary contractions (36 contractions in total), separated by a 5-min rest between contraction types...
August 10, 2017: Experimental Physiology
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