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Brain Stimulation

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https://www.readbyqxmd.com/read/28209346/reliability-of-tms-phosphene-threshold-estimation-toward-a-standardized-protocol
#1
Chiara Mazzi, Silvia Savazzi, Arman Abrahamyan, Manuela Ruzzoli
BACKGROUND: Phosphenes induced by transcranial magnetic stimulation (TMS) are a subjectively described visual phenomenon employed in basic and clinical research as index of the excitability of retinotopically organized areas in the brain. OBJECTIVE: Phosphene threshold estimation is a preliminary step in many TMS experiments in visual cognition for setting the appropriate level of TMS doses; however, the lack of a direct comparison of the available methods for phosphene threshold estimation leaves unsolved the reliability of those methods in setting TMS doses...
February 2, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28196679/successful-dorsomedial-prefrontal-rtms-for-major-depression-in-borderline-personality-disorder-three-cases
#2
LETTER
Kfir Feffer, Sarah K Peters, Kamaldeep Bhui, Peter Giacobbe, Jonathan Downar
No abstract text is available yet for this article.
February 2, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28161228/antidepressant-remission-to-dtms-of-the-dmpfc-and-acc-in-lateral-pfc-dtms-nonresponders-case-series
#3
LETTER
A Tendler, E Sisko, N Barnea-Ygael, M DeLuca, N Rodriguez, S Corbett-Methott, J Sutton, A Zangen
No abstract text is available yet for this article.
January 24, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28162976/neuromodulation-in-response-to-electroconvulsive-therapy-in-schizophrenia-and-major-depression
#4
Philipp Arthur Thomann, Robert Christian Wolf, Henrike Maria Nolte, Dusan Hirjak, Stefan Hofer, Ulrich Seidl, Malte Sebastian Depping, Bram Stieltjes, Klaus Maier-Hein, Fabio Sambataro, Torsten Wüstenberg
BACKGROUND: Electroconvulsive therapy (ECT) is one of the most effective treatments in severe and treatment-resistant major depressive disorder (MDD). ECT has been also shown to be effective in schizophrenia (SZ), particularly when rapid symptom reduction is needed or in cases of resistance to drug-treatment. However, its precise mechanisms of action remain largely unknown. OBJECTIVE/HYPOTHESIS: This study examined whether ECT exerts disorder-specific or unspecific modulation of brain structure and function in SZ and MDD...
January 16, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28117177/two-indications-one-target-concomitant-epilepsy-and-tourettism-treated-with-centromedian-parafascicular-thalamic-stimulation
#5
LETTER
Marina Picillo, Mohammad Rohani, Andres M Lozano, Alfonso Fasano
No abstract text is available yet for this article.
January 12, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28131520/temporal-plasticity-in-auditory-cortex-improves-neural-discrimination-of-speech-sounds
#6
Crystal T Engineer, Jai A Shetake, Navzer D Engineer, Will A Vrana, Jordan T Wolf, Michael P Kilgard
BACKGROUND: Many individuals with language learning impairments exhibit temporal processing deficits and degraded neural responses to speech sounds. Auditory training can improve both the neural and behavioral deficits, though significant deficits remain. Recent evidence suggests that vagus nerve stimulation (VNS) paired with rehabilitative therapies enhances both cortical plasticity and recovery of normal function. OBJECTIVE/HYPOTHESIS: We predicted that pairing VNS with rapid tone trains would enhance the primary auditory cortex (A1) response to unpaired novel speech sounds...
January 11, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28117178/targeting-interhemispheric-inhibition-with-neuromodulation-to-enhance-stroke-rehabilitation
#7
REVIEW
L J Boddington, J N J Reynolds
BACKGROUND/OBJECTIVES: Interhemispheric inhibition in the brain plays a dynamic role in the production of voluntary unimanual actions. In stroke, the interhemispheric imbalance model predicts the presence of asymmetry in interhemispheric inhibition, with excessive inhibition from the contralesional hemisphere limiting maximal recovery. Stimulation methods to reduce this asymmetry in the brain may be promising as a stroke therapy, however determining how to best measure and modulate interhemispheric inhibition and who is likely to benefit, remain important questions...
January 11, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28117176/on-the-handling-of-stimulation-artifacts-during-simultaneous-electroencephalography-eeg-and-transcranial-low-field-strength-magnetic-stimulation-lfms
#8
LETTER
Vladimir Miskovic, Karl Kuntzelman, C Alex Goddard
No abstract text is available yet for this article.
January 11, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28094125/transcranial-static-magnetic-field-stimulation-of-m1-reduces-corticospinal-excitability-without-distorting-sensorimotor-integration-in-humans
#9
LETTER
Pablo Arias, Lucía Adán-Arcay, Beatriz Puerta-Catoira, Antonio Madrid, Javier Cudeiro
No abstract text is available yet for this article.
January 4, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28089653/priming-theta-burst-stimulation-enhances-motor-cortex-plasticity-in-young-but-not-old-adults
#10
George M Opie, Eleni Vosnakis, Michael C Ridding, Ulf Ziemann, John G Semmler
BACKGROUND: Primary motor cortex neuroplasticity is reduced in old adults, which may contribute to the motor deficits commonly observed in the elderly. Previous research in young subjects suggests that the neuroplastic response can be enhanced using non-invasive brain stimulation (NIBS), with a larger plastic response observed following priming with both long-term potentiation (LTP) and depression (LTD)-like protocols. However, it is not known if priming stimulation can also modulate plasticity in older adults...
January 4, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28089321/a-single-session-of-prefrontal-cortex-transcranial-direct-current-stimulation-does-not-modulate-implicit-task-sequence-learning-and%C3%A2-consolidation
#11
Branislav Savic, René Müri, Beat Meier
BACKGROUND: Transcranial direct current stimulation (tDCS) is assumed to affect cortical excitability and dependent on the specific stimulation conditions either to increase or decrease learning. OBJECTIVE: The purpose of this study was to modulate implicit task sequence learning with tDCS. METHODS: As cortico-striatal loops are critically involved in implicit task sequence learning, tDCS was applied above the dorsolateral prefrontal cortex (DLPFC)...
January 4, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28073638/stimulation-of-the-human-medial-temporal-lobe-between-learning-and-recall-selectively-enhances-forgetting
#12
Maxwell B Merkow, John F Burke, Ashwin G Ramayya, Ashwini D Sharan, Michael R Sperling, Michael J Kahana
BACKGROUND: Direct electrical stimulation applied to the human medial temporal lobe (MTL) typically disrupts performance on memory tasks, however, the mechanism underlying this effect is not known. OBJECTIVE: To study the effects of MTL stimulation on memory performance. METHODS: We studied the effects of MTL stimulation on memory in five patients undergoing invasive electrocorticographic monitoring during various phases of a memory task (encoding, distractor, recall)...
December 29, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28126249/blunt-or-precise-a-note-about-the-relative-precision-of-figure-of-eight-rtms-coils
#13
LETTER
Colleen Hanlon
No abstract text is available yet for this article.
December 28, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28057452/stimulating-cognition-in-schizophrenia-a-controlled-pilot-study-of-the-effects-of-prefrontal-transcranial-direct-current-stimulation-upon-memory-and-learning
#14
Natasza D Orlov, Derek K Tracy, Daniel Joyce, Shinal Patel, Joanna Rodzinka-Pasko, Hayley Dolan, John Hodsoll, Tracy Collier, John Rothwell, Sukhwinder S Shergill
BACKGROUND: Schizophrenia is characterized by prominent cognitive deficits, impacting on memory and learning; these are strongly associated with the prefrontal cortex. OBJECTIVE/HYPOTHESIS: To combine two interventions, transcranial direct current stimulation (tDCS) over the prefrontal cortex and cognitive training, to examine change in cognitive performance in patients with schizophrenia. METHODS: A double blind, sham-controlled pilot study of 49 patients with schizophrenia, randomized into real or sham tDCS stimulation groups...
December 28, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28065487/the-effect-of-unilateral-subthalamic-nucleus-deep-brain-stimulation-on-depression-in-parkinson-s-disease
#15
Elizabeth L Birchall, Harrison C Walker, Gary Cutter, Stephanie Guthrie, Allen Joop, Raima A Memon, Ray L Watts, David G Standaert, Amy W Amara
BACKGROUND: Depression is common in Parkinson's disease (PD) and adversely affects quality of life. Both unilateral and bilateral subthalamic (STN) deep brain stimulation (DBS) effectively treat the motor symptoms of PD, but questions remain regarding the impact of unilateral STN DBS on non-motor symptoms, such as depression. METHODS: We report changes in depression, as measured by the Hamilton Depression Rating Scale (HAMD-17), in 50 consecutive PD patients who underwent unilateral STN DBS...
December 27, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28159536/being-open-minded-about-neuromodulation-trials-finding-success-in-our-failures
#16
EDITORIAL
Joseph J Fins, Cynthia S Kubu, Helen S Mayberg, Reinhard Merkel, Bart Nuttin, Thomas E Schlaepfer
As part of the efforts of a multi-disciplinary, international working group focused on ethical issues in neuromodulation for neuro-psychiatric disorders, we propose a novel; strategy for study design which iteratively applies new knowledge to on-going and future trials. Under current practice, device studies may be closed or categorized as "failures" before knowledge embedded in them can be fully mined. We propose the use of an iterative process to gain knowledge from subjects who have responded to those who have not...
December 23, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28040450/cortical-inhibitory-and-excitatory-function-in-drug-naive-generalized-anxiety-disorder
#17
Cheng-Ta Li, Chia-Feng Lu, Hui-Ching Lin, Ying-Zu Huang, Chi-Hung Juan, Tung-Ping Su, Ya-Mei Bai, Mu-Hong Chen, Wei-Chen Lin
BACKGROUND: A growing body of evidence suggests that deficits in GABAergic inhibitory and glutamatergic excitatory neurotransmission may be involved in the core pathophysiology of generalized anxiety disorder (GAD), a disease characterized by pathological anxious worrying. The aim of the present study was to measure motor cortical excitability by paired-pulse transcranial magnetic stimulation (ppTMS) in patients with GAD. METHODS: ppTMS measurements of excitation and inhibition from bilateral motor cortices were investigated in 26 right-handed GAD patients who were drug-naïve (half of them with a comorbidity of major depressive disorder) and 35 right-handed age- and sex-matched healthy controls...
December 21, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28027899/impairment-of-the-visuo-spatial-sketch-pad-by-left-prefrontal-transcranial-direct-current-stimulation
#18
LETTER
A S Alencastro, E M Borigato, I B Rios, M O Santos, R C A Melo, R E Torres, V M S Moraes, S L Sá, A Iannone, A Garcia, C Satler, M C H Tavares, J P Brasil-Neto
No abstract text is available yet for this article.
December 21, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28057451/the-critical-role-of-the-dorsal-fronto-median-cortex-in-voluntary-action-inhibition-a-tms-study
#19
Stefania C Ficarella, Lorella Battelli
BACKGROUND: Action inhibition is a complex decision process that can be triggered by external factors (exogenous) or internal decisions (endogenous). While the neuronal underpinnings of exogenous action inhibition have been extensively investigated, less is known about the brain areas responsible for endogenous action inhibition. OBJECTIVE: We used inhibitory repetitive transcranial magnetic stimulation (rTMS) to test the causal role of two brain areas, the left dorsal fronto-median Cortex (dFMC) and the right Inferior Frontal Cortex (rIFC) in exogenous and endogenous action inhibition...
December 19, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/28031148/reliability-and-minimal-detectable-change-of-transcranial-magnetic-stimulation-outcomes-in-healthy-adults-a-systematic-review
#20
REVIEW
Louis-David Beaulieu, Véronique H Flamand, Hugo Massé-Alarie, Cyril Schneider
BACKGROUND: Transcranial magnetic stimulation (TMS) is used worldwide for noninvasively testing human motor systems but its psychometric properties remain unclear. OBJECTIVE/HYPOTHESIS: This work systematically reviewed studies on the reliability of TMS outcome measures of primary motor cortex (M1) excitability in healthy humans, with an emphasis on retrieving minimal detectable changes (MDC). METHODS: The literature search was performed in three databases (Pubmed, CINAHL, Embase) up to June 2016 and additional studies were identified through hand-searching...
December 19, 2016: Brain Stimulation
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