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Theta burst stimulation

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https://www.readbyqxmd.com/read/28822321/neurostimulation-techniques-in-the-treatment-of-cocaine-dependence-a-review-of-the-literature
#1
REVIEW
Fady Rachid
OBJECTIVE: Cocaine use disorder is a very common condition that represents a substantial public health problem, and no effective pharmacological or psychological therapies have been identified to date. Urgent therapeutic alternatives are therefore needed such as neurostimulation techniques. The purpose of this review is to describe and discuss studies that have evaluated the safety and efficacy of these techniques for the treatment of cocaine dependence. METHODS: The electronic literature on repetitive transcranial magnetic stimulation, theta-burst stimulation, deep transcranial magnetic stimulation, transcranial direct current stimulation, magnetic seizure therapy, electroconvulsive therapy, cranial electro-stimulation, and deep brain stimulation in the treatment of cocaine addiction were reviewed...
August 10, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28803750/motor-cortex-and-spinal-cord-neuromodulation-promote-corticospinal-tract-axonal-outgrowth-and-motor-recovery-after-cervical-contusion-spinal-cord-injury
#2
N Zareen, M Shinozaki, D Ryan, H Alexander, A Amer, D Truong, N Khadka, A Sarkar, S Naeem, M Bikson, J Martin
Cervical injuries are the most common form of SCI. In this study, we used a neuromodulatory approach to promote skilled movement recovery and repair of the corticospinal tract (CST) after a moderately severe C4 midline contusion in adult rats. We used bilateral epidural intermittent theta burst (iTBS) electrical stimulation of motor cortex to promote CST axonal sprouting and cathodal trans-spinal direct current stimulation (tsDCS) to enhance spinal cord activation to motor cortex stimulation after injury. We used Finite Element Method (FEM) modeling to direct tsDCS to the cervical enlargement...
August 10, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28789578/accelerated-itbs-treatment-in-depressed-patients-differentially-modulates-reward-system-activity-based-on-anhedonia
#3
Romain Duprat, Guo-Rong Wu, Rudi De Raedt, Chris Baeken
OBJECTIVES: Accelerated intermittent theta-burst stimulation (aiTBS) anti-depressive working mechanisms are still unclear. Because aiTBS may work through modulating the reward system and the level of anhedonia may influence this modulation, we investigated the effect of aiTBS on reward responsiveness in high and low anhedonic MDD patients. METHODS: In this registered RCT (NCT01832805), 50 MDD patients were randomised to a sham-controlled cross-over aiTBS treatment protocol over the left dorsolateral prefrontal cortex (DLPFC)...
August 9, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28782579/safety-of-carotid-artery-stent-in-repetitive-transcranial-magnetic-stimulation-the-histopathological-proof-from-swine-carotid-artery
#4
Po-Yu Fong, Wen-Yu Chuang, Ying-Zu Huang, Chien-Hung Chang
INTRODUCTION: Repetitive transcranial magnetic stimulation (rTMS), including theta burst stimulation (TBS), is considered helpful for functional recovery in post-stroke patients. However, the safety is a common concern forusingrTMS for neuro-rehabilitation and research in patients with stents. METHOD: Prolonged continuous theta burst stimulation (cTBS) with 1200 pulses at 50% of maximum output of Magstim Super Rapid2 was delivered in three different angles to a carotid stent placed in an isolated fresh swine carotid artery or on a table at a distance of 5cm...
August 3, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28747510/nonspecific-block-of-voltage-gated-potassium-channels-has-greater-effect-on-distal-schaffer-collaterals-than-proximal-schaffer-collaterals-during-periods-of-high-activity
#5
Benjamin Owen, Rishi Reddy, Lawrence M Grover
Previous studies established different responses between proximal and distal portions of Schaffer collateral axons during high-frequency and burst stimulation, with distal axons demonstrating biphasic changes in excitability (hyperexcitability followed by depression), but proximal axons showing only monophasic depression. Voltage-dependent potassium (KV) channels are important determinants of axonal excitability, and block of KV channels can promote axon hyperexcitability. We therefore hypothesized that block of KV channels should lead to biphasic response changes in proximal Schaffer collaterals, like those seen in distal Schaffer collaterals...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28747470/the-third-stimulus-temporal-discrimination-threshold-focusing-on-the-temporal-processing-of-sensory-input-within-primary-somatosensory-cortex
#6
Giorgio Leodori, Alessandra Formica, Xiaoying Zhu, Antonella Conte, Daniele Belvisi, Giorgio Cruccu, Mark Hallett, Alfredo Berardelli
BACKGROUND: The somatosensory temporal discrimination threshold (STDT) has been used in recent years to investigate time processing of sensory information but little is known about the physiological correlates of somatosensory temporal discrimination. OBJECTIVE: To investigate whether the time interval required to discriminate between two stimuli varies according to the number of stimuli in the task. We used the Third Stimulus Temporal Discrimination Threshold (ThirdDT), defined as the shortest time interval at which an individual distinguishes a third stimulus after a pair of stimuli delivered at the STDT...
July 26, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28716531/continuous-theta-burst-stimulation-inhibits-the-bilateral-hemispheres
#7
Ruiping Hu, Yulian Zhu, Xinwei Tang, Xiaoxia Du, Hui Zhang, Qiaoyun Liu, Junfa Wu, Shunjuan Fan, Youguo Hao, Yi Wu
Transcranial magnetic stimulation induces changes in the cerebral cortex functions, either unilaterally or bilaterally. Here, we combined evoked potential recording and functional brain imaging to analyze the modulating effects of continuous theta burst stimulation in bilateral motor regions of the adult human cortex. We detected concurrent inhibition of the bilateral motor regions following stimulation, as evidenced by both the electrophysiological and imaging results. Our findings supported the notion that magnetic stimulation is able to modulate the contralateral hemisphere through the callosal connectivity...
July 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28708877/median-raphe-region-stimulation-alone-generates-remote-but-not-recent-fear-memory-traces
#8
Diána G Balázsfi, Dóra Zelena, Lívia Farkas, Kornél Demeter, István Barna, Csaba Cserép, Virág T Takács, Gábor Nyíri, Flóra Gölöncsér, Beáta Sperlágh, Tamás F Freund, József Haller
The median raphe region (MRR) is believed to control the fear circuitry indirectly, by influencing the encoding and retrieval of fear memories by amygdala, hippocampus and prefrontal cortex. Here we show that in addition to this established role, MRR stimulation may alone elicit the emergence of remote but not recent fear memories. We substituted electric shocks with optic stimulation of MRR in C57BL/6N male mice in an optogenetic conditioning paradigm and found that stimulations produced agitation, but not fear, during the conditioning trial...
2017: PloS One
https://www.readbyqxmd.com/read/28706456/reduction-of-long-term-potentiation-at-schaffer-collateral-ca1-synapses-in-the-rat-hippocampus-at-the-acute-stage-of-vestibular-compensation
#9
Gyoung Wan Lee, Jae Hyo Kim, Min Sun Kim
Vestibular compensation is a recovery process from vestibular symptoms over time after unilateral loss of peripheral vestibular end organs. The aim of the present study was to observe time-dependent changes in long-term potentiation (LTP) at Schaffer collateral-CA1 synapses in the CA1 area of the hippocampus during vestibular compensation. The input-output (I/O) relationships of fEPSP amplitudes and LTP induced by theta burst stimulation to Schaffer's collateral commissural fibers were evaluated from the CA1 area of hippocampal slices at 1 day, 1 week, and 1 month after unilateral labyrinthectomy (UL)...
July 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/28704733/reversal-of-long-term-potentiation-like-plasticity-in-primary-motor-cortex-in-patients-with-progressive-supranuclear-palsy
#10
Matteo Bologna, Kelly Bertram, Giulia Paparella, Claudia Papi, Daniele Belvisi, Antonella Conte, Antonio Suppa, David R Williams, Alfredo Berardelli
OBJECTIVE: Abnormal primary motor cortex plasticity might be involved in the pathophysiology of progressive supranuclear palsy. In the present study we aimed to investigate possible abnormalities of depotentiation, a mechanism involved in plasticity regulation, in this condition. METHODS: Primary motor cortex excitability, investigated with single and paired-pulse transcranial magnetic stimulation, as well as long-term potentiation-like plasticity and its reversibility, were studied using theta burst stimulation in 15 patients with progressive supranuclear palsy and 11 healthy controls...
September 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28701927/activation-of-the-creb-c-fos-pathway-during-long-term-synaptic-plasticity-in-the-cerebellum-granular-layer
#11
Daniela Gandolfi, Silvia Cerri, Jonathan Mapelli, Mariarosa Polimeni, Simona Tritto, Marie-Therese Fuzzati-Armentero, Albertino Bigiani, Fabio Blandini, Lisa Mapelli, Egidio D'Angelo
The induction of long-term potentiation and depression (LTP and LTD) is thought to trigger gene expression and protein synthesis, leading to consolidation of synaptic and neuronal changes. However, while LTP and LTD have been proposed to play important roles for sensori-motor learning in the cerebellum granular layer, their association with these mechanisms remained unclear. Here, we have investigated phosphorylation of the cAMP-responsive element binding protein (CREB) and activation of the immediate early gene c-Fos pathway following the induction of synaptic plasticity by theta-burst stimulation (TBS) in acute cerebellar slices...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28692061/a-causal-account-of-the-brain-network-computations-underlying-strategic-social-behavior
#12
Christopher A Hill, Shinsuke Suzuki, Rafael Polania, Marius Moisa, John P O'Doherty, Christian C Ruff
During competitive interactions, humans have to estimate the impact of their own actions on their opponent's strategy. Here we provide evidence that neural computations in the right temporoparietal junction (rTPJ) and interconnected structures are causally involved in this process. By combining inhibitory continuous theta-burst transcranial magnetic stimulation with model-based functional MRI, we show that disrupting neural excitability in the rTPJ reduces behavioral and neural indices of mentalizing-related computations, as well as functional connectivity of the rTPJ with ventral and dorsal parts of the medial prefrontal cortex...
August 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28686990/left-frontal-pole-theta-burst-stimulation-decreases-orbitofrontal-and-insula-activity-in-cocaine-users-and-alcohol-users
#13
Colleen A Hanlon, Logan T Dowdle, Brittany Correia, Oliver Mithoefer, Tonisha Kearney-Ramos, Daniel Lench, Millie Griffin, Raymond F Anton, Mark S George
BACKGROUND: Preclinical research has demonstrated a causal relationship between medial prefrontal cortex activity and cocaine self-administration. As a step towards translating those data to a neural circuit-based intervention for patients, this study sought to determine if continuous theta burst stimulation (cTBS) to the left frontal pole (FP), would attenuate frontal-striatal activity in two substance-dependent populations. METHODS: Forty-nine substance dependent individuals (25 cocaine, 24 alcohol) completed a single-blind, sham-controlled, crossover study wherein they received 6 trains of real or sham cTBS (110% resting motor threshold, FP1) each visit...
May 30, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28673716/contribution-of-the-supplementary-motor-area-and-the-cerebellum-to-the-anticipatory-postural-adjustments-and-execution-phases-of-human-gait-initiation
#14
Aliénor Richard, Angèle Van Hamme, Xavier Drevelle, Jean-Louis Golmard, Sabine Meunier, Marie-Laure Welter
Several brain structures including the brainstem, the cerebellum and the frontal cortico-basal ganglia network, with the primary and premotor areas have been shown to participate in the functional organization of gait initiation and postural control in humans, but their respective roles remain poorly understood. The aim of this study was to better understand the role of the supplementary motor area (SMA) and posterior cerebellum in the gait initiation process. Gait initiation parameters were recorded in 22 controls both before and after continuous theta burst transcranial stimulation (cTBS) of the SMA and cerebellum, and were compared to sham stimulation, using a randomized double-blind design study...
July 1, 2017: Neuroscience
https://www.readbyqxmd.com/read/28669908/modulation-of-cognitive-cerebello-cerebral-functional-connectivity-by-lateral-cerebellar-continuous-theta-burst-stimulation
#15
Anuj Rastogi, Robin Cash, Katharine Dunlop, Michael Vesia, Aaron Kucyi, Ayda Ghahremani, Jonathan Downar, Joyce Chen, Robert Chen
Network connectivity measured with resting state functional magnetic resonance imaging (rsfMRI) has revealed the contribution of distinct cerebellar lobules to an array of brain wide networks sub-serving motor and cognitive processes. As distinct cerebellar lobules form relatively accessible nodes of different brain networks, this raises the possibility for site-specific modulation of network connectivity using non-invasive brain stimulation techniques such as transcranial magnetic stimulation (TMS). Continuous theta burst transcranial magnetic stimulation (cTBS) induces long-lasting inhibition of cortical areas...
June 29, 2017: NeuroImage
https://www.readbyqxmd.com/read/28652969/interindividual-differences-in-motor-network-connectivity-and-behavioral-response-to-itbs-in-stroke-patients
#16
Svenja Diekhoff-Krebs, Eva-Maria Pool, Anna-Sophia Sarfeld, Anne K Rehme, Simon B Eickhoff, Gereon R Fink, Christian Grefkes
Cerebral plasticity-inducing approaches like repetitive transcranial magnetic stimulation (rTMS) are of high interest in situations where reorganization of neural networks can be observed, e.g., after stroke. However, an increasing number of studies suggest that improvements in motor performance of the stroke-affected hand following modulation of primary motor cortex (M1) excitability by rTMS shows a high interindividual variability. We here tested the hypothesis that in stroke patients the interindividual variability of behavioral response to excitatory rTMS is related to interindividual differences in network connectivity of the stimulated region...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28651891/neuroanatomical-alterations-and-synaptic-plasticity-impairment-in-the-perirhinal-cortex-of-the-ts65dn-mouse-model-of-down-syndrome
#17
Vincenzo Roncacé, Costanza Burattini, Fiorenza Stagni, Sandra Guidi, Andrea Giacomini, Marco Emili, Giorgio Aicardi, Renata Bartesaghi
Down syndrome (DS), a genetic condition due to triplication of Chromosome 21, is characterized by numerous neurodevelopmental alterations and intellectual disability. Individuals with DS and DS mouse models are impaired in several memory domains, including hippocampus-dependent declarative (spatial, in rodents) memory and visual recognition memory, a form of memory in which the perirhinal cortex (PRC) plays a fundamental role. The anatomo-functional substrates of hippocampus-dependent memory impairment have been largely elucidated in the Ts65Dn mouse model of DS...
June 23, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28624346/theta-burst-magnetic-stimulation-over-the-pre-supplementary-motor-area-improves-motor-inhibition
#18
Ignacio Obeso, Leonora Wilkinson, James T Teo, Penelope Talelli, John C Rothwell, Marjan Jahanshahi
BACKGROUND: Stopping an ongoing motor response or resolving conflict induced by conflicting stimuli are associated with activation of a right-lateralized network of inferior frontal gyrus (IFG), pre-supplementary motor area (pre-SMA) and subthalamic nucleus (STN). However, the roles of the right IFG and pre-SMA in stopping a movement and in conflict resolution remain unclear. We used continuous theta burst stimulation (cTBS) to examine the involvement of the right IFG and pre-SMA in inhibition and conflict resolution using the conditional stop signal task...
May 22, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28598858/effects-of-intermittent-theta-burst-stimulation-on-spasticity-after-spinal-cord-injury
#19
Raffaele Nardone, Patrick B Langthaler, Andrea Orioli, Peter Höller, Yvonne Höller, Vanessa N Frey, Francesco Brigo, Eugen Trinka
PURPOSE: Spasticity is a common disorder in patients with spinal cord injury (SCI). The aim of this study was to investigate whether intermittent theta burst stimulation (iTBS), a safe, non-invasive and well-tolerated protocol of excitatory repetitive transcranial magnetic stimulation (rTMS), is effective in modulating spasticity in SCI patients. METHODS: In this randomized, double-blind, crossover, sham-controlled study, ten subjects with incomplete cervical or thoracic SCI received 10 days of daily sessions of real or sham iTBS...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/28577381/neurotoxicity-of-low-bisphenol-a-bpa-exposure-for-young-male-mice-implications-for-children-exposed-to-environmental-levels-of-bpa
#20
Yuanxiu Zhou, Zhouyu Wang, Minghan Xia, Siyi Zhuang, Xiaobing Gong, Jianwen Pan, Chuhua Li, Ruifang Fan, Qihua Pang, Shaoyou Lu
To investigate the neuron toxicities of low-dose exposure to bisphenol A (BPA) in children, mice were used as an animal model. We examined brain cell damage and the effects of learning and memory ability after BPA exposure in male mice (4 weeks of age) that were divided into four groups and chronically received different BPA treatments for 8 weeks. The comet assay and hippocampal neuron counting were used to detect the brain cell damage. The Y-maze test was applied to test alterations in learning and memory ability...
October 2017: Environmental Pollution
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