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Brain Stimulation

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https://www.readbyqxmd.com/read/29126945/simultaneous-aerobic-exercise-and-rtms-feasibility-of-combining-therapeutic-modalities-to-treat-depression
#1
LETTER
Ryan E Ross, Catherine J VanDerwerker, Jennifer H Newton, Mark S George, E Baron Short, Gregory L Sahlem, A J Manett, James B Fox, Chris M Gregory
No abstract text is available yet for this article.
October 31, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29103947/accelerated-hf-rtms-in-the-elderly-depressed-a-feasibility-study
#2
LETTER
Alexandre Dardenne, Chris Baeken, Cleo L Crunelle, Chris Bervoets, Frieda Matthys, Sarah C Herremans
No abstract text is available yet for this article.
October 31, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29100928/stochastic-resonance-in-the-human-vestibular-system-noise-induced-facilitation-of-vestibulospinal-reflexes
#3
M Wuehr, J C Boerner, C Pradhan, J Decker, K Jahn, T Brandt, R Schniepp
BACKGROUND: There is strong evidence that the presence of noise can enhance information processing in sensory systems via stochastic resonance (SR). OBJECTIVES: To examine the presence of SR in human vestibulospinal reflex function. METHODS: Healthy subjects were stimulated with 1 Hz sinusoidal GVS of varying amplitudes (0-1.9 mA). Coherence between GVS input and stimulation-induced motion responses was determined and psychometric function fits were subsequently used to determine individual vestibulospinal reflex thresholds...
October 31, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29128490/responders-to-rtms-for-depression-show-increased-fronto-midline-theta-and-theta-connectivity-compared-to-non-responders
#4
N W Bailey, K E Hoy, N C Rogasch, R H Thomson, S McQueen, D Elliot, C M Sullivan, B D Fulcher, Z J Daskalakis, P B Fitzgerald
BACKGROUND: Repetitive transcranial magnetic stimulation (rTMS) is an effective treatment for depression, but only some individuals respond. Predicting response could reduce patient and clinical burden. Neural activity related to working memory (WM) has been related to mood improvements, so may represent a biomarker for response prediction. PRIMARY HYPOTHESES: We expected higher theta and alpha activity in responders compared to non-responders to rTMS. METHODS: Fifty patients with treatment resistant depression and twenty controls performed a WM task while electroencephalography (EEG) was recorded...
October 27, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29126946/sensory-percepts-induced-by-microwire-array-and-dbs-microstimulation-in-human-sensory-thalamus
#5
Brandon D Swan, Lynne B Gasperson, Max O Krucoff, Warren M Grill, Dennis A Turner
BACKGROUND: Microstimulation in human sensory thalamus (ventrocaudal, VC) results in focal sensory percepts in the hand and arm which may provide an alternative target site (to somatosensory cortex) for the input of prosthetic sensory information. Sensory feedback to facilitate motor function may require simultaneous or timed responses across separate digits to recreate perceptions of slip as well as encoding of intensity variations in pressure or touch. OBJECTIVES: To determine the feasibility of evoking sensory percepts on separate digits with variable intensity through either a microwire array or deep brain stimulation (DBS) electrode, recreating "natural" and scalable percepts relating to the arm and hand...
October 27, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29111077/international-randomized-controlled-trial-of-transcranial-direct-current-stimulation-in-depression
#6
Colleen K Loo, Mustafa M Husain, William M McDonald, Scott Aaronson, John P O'Reardon, Angelo Alonzo, Cynthia Shannon Weickert, Donel M Martin, Shawn M McClintock, Adith Mohan, Sarah H Lisanby
BACKGROUND: Evidence suggests that transcranial Direct Current Stimulation (tDCS) has antidepressant effects in unipolar depression, but there is limited information for patients with bipolar depression. Additionally, prior research suggests that brain derived neurotrophic factor (BDNF) Val66Met genotype may moderate response to tDCS. OBJECTIVE: To examine tDCS efficacy in unipolar and bipolar depression and assess if BDNF genotype is associated with antidepressant response to tDCS...
October 27, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29089235/transcranial-magnetic-stimulation-modulation-of-corticospinal-excitability-by-targeting-cortical-i-waves-with-biphasic-paired-pulses
#7
Elisa Kallioniemi, Petri Savolainen, Gustaf Järnefelt, Päivi Koskenkorva, Jari Karhu, Petro Julkunen
BACKGROUND: Transcranial magnetic stimulation (TMS) induced I-wave behavior can be demonstrated at neuronal population level using paired-pulses and by observing short-interval cortical facilitation (SICF). Advancements in stimulator technology have made it possible to apply biphasic paired-pulses to induce SICF. OBJECTIVE: Our aim was to characterize the SICF I-wave interaction by biphasic paired-pulses with the ultimate objective to enhance TMS effects via SICF in various TMS-applications...
October 20, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29111078/electroconvulsive-therapy-depression-the-immune-system-and-inflammation-a-systematic-review
#8
REVIEW
Antoine Yrondi, Marie Sporer, Patrice Péran, Laurent Schmitt, Christophe Arbus, Anne Sauvaget
BACKGROUND: The management and treatment of major depressive disorder are major public health challenges, the lifetime prevalence of this illness being 4.4%-20% in the general population. Major depressive disorder and treatment resistant depression appear to be, in part, related to a dysfunction of the immune response. Among the treatments for depression ECT occupies an important place. The underlying cerebral mechanisms of ECT remain unclear. OBJECTIVES/HYPOTHESIS: The aim of this review is to survey the potential actions of ECT on the immuno-inflammatory cascade activated during depression...
October 19, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29111076/electroconvulsive-therapy-for-depression-with-comorbid-borderline-personality-disorder-or-post-traumatic-stress-disorder-a-matched-retrospective-cohort-study
#9
Tyler S Kaster, David S Goldbloom, Zafiris J Daskalakis, Benoit H Mulsant, Daniel M Blumberger
BACKGROUND: The impact of comorbid borderline personality disorder (BPD) or post-traumatic stress disorder (PTSD) on clinical and cognitive outcomes of electroconvulsive therapy (ECT) in patients with major depressive episodes (MDE) is unknown. OBJECTIVE: Compare clinical response and adverse cognitive effects for MDE patients with comorbid BPD or PTSD to MDE only. METHODS: In a matched retrospective cohort study of 75 patients treated with ECT at an academic psychiatric hospital with DSM-IV MDE and either comorbid BPD, PTSD or both (MDE + BPD/PTSD), 75 MDE patients without BPD or PTSD (MDE-only) were matched...
October 19, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29107623/early-symptom-improvement-at-10-sessions-as-a-predictor-of-rtms-treatment-outcome-in-major-depression
#10
Kfir Feffer, Hyewon Helen Lee, Farrokh Mansouri, Peter Giacobbe, Fidel Vila-Rodriguez, Sidney H Kennedy, Zafiris J Daskalakis, Daniel M Blumberger, Jonathan Downar
BACKGROUND: Predicting rTMS nonresponse could be helpful in sparing patients from futile treatment, and in improving use of limited rTMS resources. While several predictive biomarkers have been proposed, few are accurate for individual-level prediction; none have entered routine use. An alternative approach in pharmacotherapy predicts outcome from early response; patients showing minimal (e.g., ≤20%) improvement at 2 weeks can be predicted as nonresponders with negative predictive values (NPV) > 80-90%...
October 19, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29122535/limited-output-transcranial-electrical-stimulation-lotes-2017-engineering-principles-regulatory-statutes-and-industry-standards-for-wellness-over-the-counter-or-prescription-devices-with-low-risk
#11
Marom Bikson, Bhaskar Paneri, Andoni Mourdoukoutas, Zeinab Esmaeilpour, Bashar W Badran, Robin Azzam, Devin Adair, Abhishek Datta, Xiao Hui Fang, Brett Wingeier, Daniel Chao, Miguel Alonso-Alonso, Kiwon Lee, Helena Knotkova, Adam J Woods, David Hagedorn, Doug Jeffery, James Giordano, William J Tyler
We present device standards for low-power non-invasive electrical brain stimulation devices classified as limited output transcranial electrical stimulation (tES). Emerging applications of limited output tES to modulate brain function span techniques to stimulate brain or nerve structures, including transcranial direct current stimulation (tDCS), transcranial alternating current stimulation (tACS), and transcranial pulsed current stimulation (tPCS), have engendered discussion on how access to technology should be regulated...
October 17, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29079460/optimized-auditory-transcranial-alternating-current-stimulation-improves-individual-auditory-temporal-resolution
#12
Alina Baltus, Sven Wagner, Carsten Hermann Wolters, Christoph Siegfried Herrmann
BACKGROUND: Temporal resolution of cortical, auditory processing mechanisms is suggested to be linked to peak frequency of neuronal gamma oscillations in auditory cortex areas (individual gamma frequency, IGF): Individuals with higher IGF tend to have better temporal resolution. HYPOTHESIS: Modulating ongoing gamma activity with transcranial alternating current stimulation (tACS) is expected to improve performance in gap detection (GD) tasks (shorter GD thresholds) if the frequency is higher and to decrease GD performance (longer GD thresholds) if the frequency is lower than IGF...
October 17, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29079459/effect-of-noisy-galvanic-vestibular-stimulation-on-center-of-pressure-sway-of-static-standing-posture
#13
Yasuto Inukai, Naofumi Otsuru, Mitsuhiro Masaki, Kei Saito, Shota Miyaguchi, Sho Kojima, Hideaki Onishi
BACKGROUND: The vestibular system is involved in the control of standing balance. Galvanic vestibular stimulation (GVS) is a noninvasive technique that can stimulate the vestibular system. In recent years, noisy GVS (nGVS) using noise current stimulation has been attempted, but it has not been clarified whether it affects postural sway in open-eye standing. OBJECTIVE: The purpose of this study was to clarify the influence of nGVS on the center of pressure (COP) sway measurement in open-eye standing postural control and identify the responders of nGVS...
October 17, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29074339/effect-of-deep-brain-stimulation-of-the-ventromedial-prefrontal-cortex-on-the-noradrenergic-system-in-rats
#14
Sonia Torres-Sanchez, Laura Perez-Caballero, Juan A Mico, Pau Celada, Esther Berrocoso
BACKGROUND: Deep Brain Stimulation (DBS) of the subgenual cingulate cortex (SCC) is a promising therapeutic alternative to treat resistant major depressive disorder. In preclinical studies, DBS of the ventromedial prefrontal cortex (vmPFC, the rodent SCC correlate) provokes an antidepressant-like effect, along with changes in noradrenaline levels at the site of stimulation. Hence, DBS appears to activate the noradrenergic-locus coeruleus (LC) system. OBJECTIVE/HYPOTHESIS: The aim of this study was to evaluate the effect of vmPFC DBS on the electrical activity of noradrenergic LC neurons, cortical oscillations and coherence between both brain areas in male rats...
October 13, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29051091/theta-phase-closed-loop-stimulation-induces-motor-paradoxical-responses-in-the-rat-model-of-parkinson-disease
#15
Ivan Cordon, María Jesús Nicolás, Sandra Arrieta, Manuel Alegre, Julio Artieda, Miguel Valencia
BACKGROUND: High-frequency deep brain stimulation (DBS) has become a widespread therapy used in the treatment of Parkinson's Disease (PD) and other diseases. Although it has proved beneficial, much recent attention has been centered around the potential of new closed-loop DBS implementations. OBJECTIVE: Here we present a new closed-loop DBS scheme based on the phase of the theta activity recorded from the motor cortex. By testing the implementation on freely moving 6-OHDA lesioned and control rats, we assessed the behavioral and neurophysiologic effects of this implementation and compared it against the classical high-frequency DBS...
October 13, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29089234/deep-brain-stimulation-for-stroke-current-uses-and-future-directions
#16
REVIEW
Gavin J B Elias, Andrew A Namasivayam, Andres M Lozano
BACKGROUND: Survivors of stroke often experience significant disability and impaired quality of life related to ongoing maladaptive responses and persistent neurologic deficits. Novel therapeutic options are urgently needed to augment current approaches. One way to promote recovery and ameliorate symptoms may be to electrically stimulate the surviving brain. Various forms of brain stimulation have been investigated for use in stroke, including deep brain stimulation (DBS). OBJECTIVE/METHODS: We conducted a comprehensive literature review in order to 1) review the use of DBS to treat post-stroke maladaptive responses including pain, dystonia, dyskinesias, and tremor and 2) assess the use and potential utility of DBS for enhancing plasticity and recovery from post-stroke neurologic deficits...
October 12, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29066167/the-effects-of-medication-use-in-transcranial-direct-current-stimulation-a-brief-review
#17
REVIEW
Molly E McLaren, Nicole R Nissim, Adam J Woods
BACKGROUND: There has been increased interest in the potential use of transcranial direct current stimulation (tDCS) as treatment for multiple conditions including depression, pain, and cognitive impairment. However, few studies account for the possible influence of comorbid medications when conducting tDCS research. OBJECTIVE/HYPOTHESIS: This literature review was conducted to examine what is currently known about the impact of medications on tDCS, provide recommendations for future research practices, and highlight areas where more research is needed...
October 12, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29079458/bilateral-extracephalic-transcranial-direct-current-stimulation-improves-endurance-performance-in-healthy-individuals
#18
L Angius, A R Mauger, J Hopker, A Pascual-Leone, E Santarnecchi, S M Marcora
BACKGROUND: Transcranial direct current stimulation (tDCS) has been used to enhance endurance performance but its precise mechanisms and effects remain unknown. OBJECTIVE: To investigate the effect of bilateral tDCS on neuromuscular function and performance during a cycling time to task failure (TTF) test. METHODS: Twelve participants in randomized order received a placebo tDCS (SHAM) or real tDCS with two cathodes (CATHODAL) or two anodes (ANODAL) over bilateral motor cortices and the opposite electrode pair over the ipsilateral shoulders...
October 5, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29042188/network-based-brain-stimulation-selectively-impairs-spatial-retrieval
#19
Kamin Kim, Amber Schedlbauer, Matthew Rollo, Suganya Karunakaran, Arne D Ekstrom, Nitin Tandon
BACKGROUND: Direct brain stimulation via electrodes implanted for intracranial electroencephalography (iEEG) permits the modulation of endogenous electrical signals with significantly greater spatial and temporal specificity than non-invasive approaches. It also allows for the stimulation of deep brain structures important to memory, such as the hippocampus, that are difficult, if not impossible, to target non-invasively. Direct stimulation studies of these deep memory structures, though, have produced mixed results, with some reporting improvement, some impairment, and others, no consistent changes...
October 5, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29037789/transcranial-brain-stimulation-for-the-treatment-of-tinnitus-positive-lessons-from-a-negative-trial
#20
EDITORIAL
Christian Plewnia
No abstract text is available yet for this article.
October 5, 2017: Brain Stimulation
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