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https://www.readbyqxmd.com/read/28737174/inverted-battery-design-as-ion-generator-for-interfacing-with-biosystems
#1
Chengwei Wang, Kun Kelvin Fu, Jiaqi Dai, Steven D Lacey, Yonggang Yao, Glenn Pastel, Lisha Xu, Jianhua Zhang, Liangbing Hu
In a lithium-ion battery, electrons are released from the anode and go through an external electronic circuit to power devices, while ions simultaneously transfer through internal ionic media to meet with electrons at the cathode. Inspired by the fundamental electrochemistry of the lithium-ion battery, we envision a cell that can generate a current of ions instead of electrons, so that ions can be used for potential applications in biosystems. Based on this concept, we report an 'electron battery' configuration in which ions travel through an external circuit to interact with the intended biosystem whereas electrons are transported internally...
July 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28733256/prefrontal-neuromodulation-reverses-spatial-associations-of-non-numerical-sequences-but-not-numbers
#2
Philipp Alexander Schroeder, Hans-Christoph Nuerk, Christian Plewnia
Numerical and non-numerical sequence items interact with spatial responding, pointing towards mental representations that are grounded in space and referred to as SNARC effects (spatial-numerical association of response codes). An ongoing controversy pertains to the universal origin of different SNARC effects and whether their underpinning is a spatial arrangement of cardinal magnitude (mental number line) or a sequential arrangement of ordinal elements in working memory. Recent results from prefrontal neuromodulation with transcranial direct current stimulation (tDCS) were supportive of the unified working memory account...
July 18, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28730695/concurrent-electrical-cervicomedullary-stimulation-and-cervical-transcutaneous-spinal-direct-current-stimulation-results-in-a-stimulus-interaction
#3
Siobhan C Dongés, Siwei Bai, Janet L Taylor
Transcutaneous spinal direct current stimulation (tsDCS) can modulate neuronal excitability within the human spinal cord; however few studies have used tsDCS at a cervical level. This study aimed to further characterise cervical tsDCS by observing its acute effects on motor responses to transcranial magnetic stimulation (TMS) and cervicomedullary stimulation. In both Study 1 and 2, participants (Study 1: n = 8, 4F; Study 2: n = 8, 3F) received two periods of 10 min, 3 mA cervical tsDCS on the same day through electrodes placed in an anterior-posterior configuration over the neck; one period with the cathode posterior (c-tsDCS) and the other with the anode posterior (a-tsDCS)...
July 20, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28729822/low-intensity-focused-tdcs-over-the-motor-cortex-shows-inefficacy-to-improve-motor-imagery-performance
#4
Irma N Angulo-Sherman, Marisol Rodríguez-Ugarte, Eduardo Iáñez, Jose M Azorín
Transcranial direct current stimulation (tDCS) is a brain stimulation technique that can enhance motor activity by stimulating the motor path. Thus, tDCS has the potential of improving the performance of brain-computer interfaces during motor neurorehabilitation. tDCS effects depend on several aspects, including the current density, which usually varies between 0.02 and 0.08 mA/cm(2), and the location of the stimulation electrodes. Hence, testing tDCS montages at several current levels would allow the selection of current parameters for improving stimulation outcomes and the comparison of montages...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28728912/electric-stimulation-of-the-right-temporo-parietal-junction-induces-a-task-specific-effect-in-deceptive-behaviors
#5
Yasuki Noguchi, Rei Oizumi
How the brain generates a lie is an important and unsolved issue in neuroscience. Previous studies indicated that mentalizing, the ability to understand and manipulate the mental states of others, plays a critical role in successful deception. Accordingly, recent neuroimaging studies reported deception-related activity in the right temporo-parietal junction (rTPJ), a brain region closely related to the mentalizing ability. Detailed functions of rTPJ in deception, however, remain unclear. In the present study, we investigated a causal relationship between rTPJ and deception using transcranial direct-current stimulation (tDCS)...
July 17, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28726157/anodal-transcranial-direct-current-stimulation-over-the-left-temporal-pole-restores-normal-visual-evoked-potential-habituation-in-interictal-migraineurs
#6
Francesca Cortese, Francesco Pierelli, Ilaria Bove, Cherubino Di Lorenzo, Maurizio Evangelista, Armando Perrotta, Mariano Serrao, Vincenzo Parisi, Gianluca Coppola
BACKGROUND: Neuroimaging data has implicated the temporal pole (TP) in migraine pathophysiology; the density and functional activity of the TP were reported to fluctuate in accordance with the migraine cycle. Yet, the exact link between TP morpho-functional abnormalities and migraine is unknown. Here, we examined whether non-invasive anodal transcranial direct current stimulation (tDCS) ameliorates abnormal interictal multimodal sensory processing in patients with migraine. METHODS: We examined the habituation of visual evoked potentials and median nerve somatosensory evoked potentials (SSEP) before and immediately after 20-min anodal tDCS (2 mA) or sham stimulation delivered over the left TP in interictal migraineurs...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28719422/polarity-independent-effects-of-transcranial-direct-current-stimulation-over-the-bilateral-opercular-somatosensory-region-a-magnetoencephalography-study
#7
Kei Nakagawa, Soichiro Koyama, Koji Inui, Satoshi Tanaka, Ryusuke Kakigi, Norihiro Sadato
The opercular somatosensory region (OP) plays an indispensable role in pain perception. In the present study, we investigated the neurophysiological effects of transcranial direct current stimulation (tDCS) over the OP. Somatosensory-evoked magnetic fields following noxious intraepidermal electrical stimulation to the left index finger (pain-SEFs) were recorded before and after tDCS with a single-blind, sham-controlled, cross-over trial design. Three tDCS conditions of left anodal/right cathodal tDCS, left cathodal/right anodal tDCS (each, 2 mA, 12 min), and sham tDCS (2 mA, 15 s) were applied...
July 17, 2017: Neuroreport
https://www.readbyqxmd.com/read/28716588/cathodal-transcranial-direct-current-stimulation-of-the-extrastriate-visual-cortex-modulates-implicit-anti-fat-bias-in-male-but-not-female-participants
#8
Valentina Cazzato, Stergios Makris, Cosimo Urgesi
Explicit negative attitudes toward obese individuals are well documented and seem to modulate the activity of perceptual areas, such as the Extrastriate Body Area (EBA) in the lateral occipito-temporal cortex, which is critical for body-shape perception. Nevertheless, it is still unclear whether EBA serves a role in implicit weight-stereotypical bias, thus reflecting stereotypical trait attribution on the basis of perceptual cues. Here, we used an Implicit Association Test (IAT) to investigate whether applying transcranial direct current stimulation (tDCS) over bilateral extrastriate visual cortex reduces pre-existing implicit weight stereotypical associations (i...
July 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28715712/propriospinal-cutaneous-induced-emg-suppression-is-unaltered-by-anodal-tdcs-of-healthy-motor-cortex
#9
Alana B McCambridge, James W Stinear, Sarah Peek, Winston D Byblow
OBJECTIVE: Cervical propriospinal premotoneurons (PN) relay descending motor commands and integrate peripheral afferent feedback. Effects of anodal transcranial direct current stimulation (a-tDCS) on propriospinal excitability in the upper limbs are unknown. METHODS: Healthy right-handed adults received a-tDCS or sham tDCS over primary motor cortex (M1) at 1mA (Experiment 1, n=18) or 2mA current intensity (Experiment 2, n=15). Propriospinal excitability was assessed by suppression of background electromyography (EMG) in extensor carpi radialis (ECR) from electrical stimulation of the superficial radial nerve during bilateral (Experiment 1 and 2) or unilateral (Experiment 2 only) activation of the left and/or right ECR...
June 28, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28714545/focal-hemodynamic-responses-in-the-stimulated-hemisphere-during-high-definition-transcranial-direct-current-stimulation
#10
Makii Muthalib, Pierre Besson, John Rothwell, Stéphane Perrey
OBJECTIVE: High-definition transcranial direct current stimulation (HD-tDCS) using a 4 × 1 electrode montage has been previously shown using modeling and physiological studies to constrain the electric field within the spatial extent of the electrodes. The aim of this proof-of-concept study was to determine if functional near-infrared spectroscopy (fNIRS) neuroimaging can be used to determine a hemodynamic correlate of this 4 × 1 HD-tDCS electric field on the brain. MATERIALS AND METHODS: In a three session cross-over study design, 13 healthy males received one sham (2 mA, 30 sec) and two real (HD-tDCS-1 and HD-tDCS-2, 2 mA, 10 min) anodal HD-tDCS targeting the left M1 via a 4 × 1 electrode montage (anode on C3 and 4 return electrodes 3...
July 17, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28712338/medial-prefrontal-cortex-stimulation-modulates-irony-processing-as-indexed-by-the-n400
#11
Nathalia Ishikawa Baptista, Mirella Manfredi, Paulo Sérgio Boggio
In this study, we investigated whether the ERP responses observed during a verbal irony comprehension task might represent the cortical manifestation of the Medial Prefrontal Cortex (MPFC) activity. We performed a tDCS-EEG study in which we analyzed the effects of tDCS polarities (anode, cathode, sham) over the MPFC during a verbal irony task. We presented visual short stories portraying everyday situations followed by written statements in either an ironic or literal condition, whose meaning was referred to in the previous context...
July 17, 2017: Social Neuroscience
https://www.readbyqxmd.com/read/28702347/tdcs-modulates-cortical-excitability-in-patients-with-disorders-of-consciousness
#12
Yang Bai, Xiaoyu Xia, Jiannan Kang, Yi Yang, Jianghong He, Xiaoli Li
Transcranial direct current stimulation (tDCS) has been reported to be a promising technique for consciousness improvement for patients with disorders of consciousness (DOC). However, there has been no direct electrophysiological evidence to demonstrate the efficacy of tDCS on patients with DOC. Therefore, we aim to measure the cortical excitability changes induced by tDCS in patients with DOC, to find electrophysiological evidence supporting the therapeutic efficacy of tDCS on patients with DOC. In this study, we enrolled sixteen patients with DOC, including nine vegetative state (VS) and seven minimally conscious state (MCS) (six females and ten males)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28701986/controlling-the-anchoring-effect-through-transcranial-direct-current-stimulation-tdcs-to-the-right-dorsolateral-prefrontal-cortex
#13
Jianbiao Li, Xile Yin, Dahui Li, Xiaoli Liu, Guangrong Wang, Liang Qu
Selective accessibility mechanisms indicate that anchoring effects are results of selective retrieval of working memory. Neuroimaging studies have revealed that the right dorsolateral prefrontal cortex (DLPFC) is closely related to memory retrieval and performance. However, no research has investigated the effect of changing the cortical excitability in right DLPFC on anchoring effects. Transcranial direct current stimulation (tDCS) can modulate the excitability of the human cerebral cortex, while anodal and cathodal tDCS are postulated to increase or decrease cortical activity, respectively...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28699187/does-transcranial-electrical-stimulation-enhance-corticospinal-excitability-of-the-motor-cortex-in-healthy-individuals-a-systematic-review-and-meta-analysis
#14
Thusharika Dissanayaka, Maryam Zoghi, Michael Farrell, Gary F Egan, Shapour Jaberzadeh
Numerous studies have explored the effects of transcranial electrical stimulation (tES) - including anodal transcranial direct current stimulation (a-tDCS), cathodal transcranial direct current stimulation (c-tDCS), transcranial alternative current stimulation (tACS), transcranial random noise stimulation (tRNS) and transcranial pulsed current stimulation (tPCS) - on corticospinal excitability (CSE) in healthy populations. However, the efficacy of these techniques and their optimal parameters for producing robust results have not been studied...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28697574/tdcs-does-not-enhance-the-effects-of%C3%A2-robot-assisted-gait-training-in-patient-with%C3%A2-subacute-stroke
#15
Daniel Leon, Mar Cortes, Jessica Elder, Hatice Kumru, Sara Laxe, Dylan James Edwards, Josep Maria Tormos, Montserrat Bernabeu, Alvaro Pascual-Leone
BACKGROUND: Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique, which can modulate cortical excitability and combined with rehabilitation therapies may improve motor recovery after stroke. OBJECTIVE: Our aim was to study the feasibility of a 4-week robotic gait training protocol combined with tDCS, and to study tDCS to the leg versus hand motor cortex or sham to improve walking ability in patients after a subacute stroke...
July 6, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28687908/the-effect-of-bilateral-transcranial-direct-current-stimulation-on-early-auditory-processing-in-schizophrenia-a-preliminary-study
#16
Walter Dunn, Yuri Rassovsky, Jonathan Wynn, Allan D Wu, Marco Iacoboni, Gerhard Hellemann, Michael F Green
Transcranial direct current stimulation (tDCS) was applied bilaterally over the auditory cortex in 12 schizophrenia patients to modulate early auditory processing. Performance on a tone discrimination task (tone-matching task-TMT) and auditory mismatch negativity were assessed after counterbalanced anodal, cathodal, and sham tDCS. Cathodal stimulation improved TMT performance (p < 0.03) compared to sham condition. Post-hoc analyses revealed a stimulation condition by negative symptom interaction in which greater negative symptoms were associated with a better TMT performance after anodal tDCS...
July 7, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28686607/cerebellar-anodal-tdcs-increases-implicit-learning-when-strategic-re-aiming-is-suppressed-in-sensorimotor-adaptation
#17
Li-Ann Leow, Welber Marinovic, Stephan Riek, Timothy J Carroll
Neurophysiological and neuroimaging work suggests that the cerebellum is critically involved in sensorimotor adaptation. Changes in cerebellar function alter behaviour when compensating for sensorimotor perturbations, as shown by non-invasive stimulation of the cerebellum and studies involving patients with cerebellar degeneration. It is known, however, that behavioural responses to sensorimotor perturbations reflect both explicit processes (such as volitional aiming to one side of a target to counteract a rotation of visual feedback) and implicit, error-driven updating of sensorimotor maps...
2017: PloS One
https://www.readbyqxmd.com/read/28684258/effects-of-transcranial-direct-current-stimulation-on-pain-mood-and-serum-endorphin-level-in-the-treatment-of-fibromyalgia-a-double-blinded-randomized-clinical-trial
#18
Eman M Khedr, Eman A H Omran, Nadia M Ismail, Dina H El-Hammady, Samar H Goma, Hassan Kotb, Hannan Galal, Ayman M Osman, Hannan S M Farghaly, Ahmed A Karim, Gehad A Ahmed
BACKGROUND: Recent studies have shown that novel neuro-modulating techniques can have pain-relieving effects in the treatment of chronic pain. The aim of this work is to evaluate the effects of transcranial direct current stimulation (tDCS) in relieving fibromyalgia pain and its relation with beta-endorphin changes. MATERIAL AND METHODS: Forty eligible patients with primary fibromyalgia were randomized to receive real anodal tDCS or sham tDCS of the left motor cortex (M1) daily for 10 days...
June 23, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28681496/transcutaneous-sacral-nerve-stimulation-for-intraoperative-verification-of-internal-anal-sphincter-innervation
#19
D W Kauff, T Moszkowski, C Wegner, A Heimann, K-P Hoffmann, T B Krüger, H Lang, W Kneist
BACKGROUND: The current standard for pelvic intraoperative neuromonitoring (pIONM) is based on intermittent direct nerve stimulation. This study investigated the potential use of transcutaneous sacral nerve stimulation for non-invasive verification of pelvic autonomic nerves. METHODS: A consecutive series of six pigs underwent low anterior rectal resection. For transcutaneous sacral nerve stimulation, an array of ten electrodes (cathodes) was placed over the sacral foramina (S2 to S4)...
July 6, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28676740/modulation-of-illusory-auditory-perception-by-transcranial-electrical-stimulation
#20
Giulia Prete, Anita D'Anselmo, Luca Tommasi, Alfredo Brancucci
The aim of the present study was to test whether transcranial electrical stimulation can modulate illusory perception in the auditory domain. In two separate experiments we applied transcranial Direct Current Stimulation (anodal/cathodal tDCS, 2 mA; N = 60) and high-frequency transcranial Random Noise Stimulation (hf-tRNS, 1.5 mA, offset 0; N = 45) on the temporal cortex during the presentation of the stimuli eliciting the Deutsch's illusion. The illusion arises when two sine tones spaced one octave apart (400 and 800 Hz) are presented dichotically in alternation, one in the left and the other in the right ear, so that when the right ear receives the high tone, the left ear receives the low tone, and vice versa...
2017: Frontiers in Neuroscience
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