2,366 results match your criteria high-frequency repetitive

High-frequency repetitive transcranial magnetic stimulation enhances layer II/III morphological dendritic plasticity in mouse primary motor cortex.

Behav Brain Res 2021 May 9;410:113352. Epub 2021 May 9.

Department of Medical Sciences and Department of Neurology, Hackensack Meridian School of Medicine, Nutley, NJ, 07110, USA. Electronic address:

High-frequency repeated transcranial magnetic stimulation (HF-rTMS) is a safe non-invasive neuromodulatory technique and there is a body of evidence shows that it can modulate plasticity in different brain areas. One of the most interesting application of HF-rTMS is the modulation of plasticity in primary motor cortex (M1) to promote recovery after brain injuries. However, the underlying mechanism by which HF-rTMS modulates motor cortex plasticity remain to be investigated. Read More

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Efficacy and acceptability of noninvasive brain stimulation interventions for weight reduction in obesity: a pilot network meta-analysis.

Int J Obes (Lond) 2021 May 10. Epub 2021 May 10.

Division of Community & Rehabilitation Psychiatry, Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.

Background/objectives: Obesity has recently been recognized as a neurocognitive disorder involving circuits associated with the reward system and the dorsolateral prefrontal cortex (DLPFC). Noninvasive brain stimulation (NIBS) has been proposed as a strategy for the management of obesity. However, the results have been inconclusive. Read More

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The Effect of High-Frequency Repetitive Transcranial Magnetic Stimulation on Functional Indices of Affected Upper Limb in Patients with Subacute Stroke.

J Biomed Phys Eng 2021 Apr 1;11(2):175-184. Epub 2021 Apr 1.

PhD, Department of Physiotherapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.

Background: Repetitive transcranial magnetic stimulation (rTMS) is a novel technique that may improve recovery in patients with stoke, but the role of rTMS as an applied and practical treatment modality for stroke rehabilitation has not been established yet.

Objective: This study was conducted to determine the effects of a rehabilitation program (RP) in conjunction with rTMS on functional indices of the paretic upper limb in the subacute phase of stroke.

Material And Methods: In this experimental study, twenty patients in the subacute phase of stroke were randomly assigned into two groups: The high frequency rTMS (HF-rTMS) in conjunction with RP (experimental group), and the RP group (control group). Read More

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The changes in kynurenine metabolites induced by rTMS in treatment-resistant depression: A pilot study.

J Psychiatr Res 2021 Apr 9;138:194-199. Epub 2021 Apr 9.

Department of Psychiatry, Faculty of Medicine, Saga University, Nabeshima 5-1-1, Saga, 849-8501, Japan.

Background: Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive brain stimulation technique that is considered a valuable and promising technique for improving depressive symptoms in treatment-resistant depression (TRD). However, the exact mechanism by which rTMS ameliorates depressive symptoms remains to be clarified.

Objective: The aim of the present study was to analyzed the changes in metabolites of patients with TRD in the rTMS treatment, especially focusing on the kynurenine (KYN) pathway. Read More

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Heterochromatic Nonlinear Optical Responses in Upconversion Nanoparticles for Super-Resolution Nanoscopy.

Adv Mater 2021 Apr 17:e2008847. Epub 2021 Apr 17.

Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Sydney, NSW, 2007, Australia.

Point spread function (PSF) engineering by an emitter's response can code higher-spatial-frequency information of an image for microscopy to achieve super-resolution. However, complexed excitation optics or repetitive scans are needed, which explains the issues of low speed, poor stability, and operational complexity associated with the current laser scanning microscopy approaches. Here, the diverse emission responses of upconversion nanoparticles (UCNPs) are reported for super-resolution nanoscopy to improve the imaging quality and speed. Read More

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Repetitive deep TMS for the reduction of body weight: Bimodal effect on the functional brain connectivity in "diabesity".

Nutr Metab Cardiovasc Dis 2021 Feb 25. Epub 2021 Feb 25.

Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy; Department of Endocrinology, Nutrition and Metabolic Diseases, IRCCS MultiMedica, Sesto San Giovanni, MI, Italy. Electronic address:

Background And Aims: Deep repetitive Transcranial Magnetic Stimulation (deep rTMS) over the bilateral insula and prefrontal cortex (PFC) can promote weight-loss in obesity, preventing cardiometabolic complications as Type 2 Diabetes (T2D). To investigate the changes in the functional brain integration after dTMS, we conducted a resting-state functional connectivity (rsFC) study in obesity.

Methods And Results: This preliminary study was designed as a randomized, double-blind, sham-controlled study: 9 participants were treated with high-frequency stimulation (realTMS group), 8 were sham-treated (shamTMS group). Read More

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February 2021

A Retrospective Comparative Study in Patients With Cocaine Use Disorder Comorbid With Attention Deficit Hyperactivity Disorder Undergoing an rTMS Protocol Treatment.

Front Psychiatry 2021 25;12:659527. Epub 2021 Mar 25.

Fondazione Novella Fronda, Piazza Castello, Padova, Italy.

Adult attention-deficit/hyperactivity disorder (ADHD) is associated with high comorbidity with other psychiatric diseases, including cocaine use disorder (CocUD). Given the common fronto-striatal dysfunction, ADHD patients often use cocaine as self-medication for ameliorating symptoms by increasing striatal dopamine release. Yet, comorbidity with ADHD is related to poor treatment outcomes. Read More

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Current Updates on Newer Forms of Transcranial Magnetic Stimulation in Major Depression.

Adv Exp Med Biol 2021 ;1305:333-349

Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.

Repetitive transcranial magnetic stimulation (rTMS) is an FDA-approved technique for treating medication-resistant depression. Conventional rTMS includes high frequency (HF) to left dorsolateral prefrontal cortex (DLPFC) and low frequency to right DLPFC. However, not all depressed patients could benefit from standard rTMS protocols. Read More

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High-Frequency and Low-Intensity Patterned Transcranial Magnetic Stimulation over Left Dorsolateral Prefrontal Cortex as Treatment for Major Depressive Disorder: A Report of 3 Cases.

Case Rep Psychiatry 2021 19;2021:5563017. Epub 2021 Mar 19.

Plan de Estudios Combinados en Medicina (PECEM), Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico.

Current transcranial magnetic stimulation devices apply intense (near 1 tesla) repetitive magnetic pulses over a specific area of the skull at relatively lower frequencies (1-50 Hz). Nevertheless, different studies have shown that very small magnetic fields, at higher frequencies (50-1000 Hz.), produce therapeutic effects in major depressive disorder. Read More

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Repetitive transcranial magnetic stimulation (rTMS) versus transcranial direct current stimulation (tDCS) in the management of patients with fibromyalgia: A randomized controlled trial.

Neurophysiol Clin 2021 Apr 2. Epub 2021 Apr 2.

Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran. Electronic address:

Objectives: The aim of this study was to compare the effects of repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS) on pain and quality of life in patients with fibromyalgia.

Methods: Thirty participants were randomized into two groups of 15 patients, to receive 3 sessions of either high-frequency (10 Hz) rTMS or 2 mA, 20 min anodal transcranial direct current stimulation over the left dorsolateral prefrontal cortex (DLPFC) over 1 week. Pain was assessed using a Visual Analog Scale (VAS) before treatment, immediately after treatment, 6 and 12 weeks later. Read More

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Comparative efficacy and acceptability of neuromodulation procedures in the treatment of treatment-resistant depression: a network meta-analysis of randomized controlled trials.

J Affect Disord 2021 May 11;287:115-124. Epub 2021 Mar 11.

The eighth Hospital Affiliated, Sun Yat-sen University, Shenzhen, 518101, Guangdong, China.

Background: Nearly half of the patients with depression experience suboptimal benefits from antidepressants. Neuromodulation therapies, a kind of technology that can regulate neuronal firing activity by electrical or magnetic stimulation, were introduced to improve this situation. However, the results from clinical trials have been inconsistent. Read More

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High frequency repetitive transcranial magnetic stimulation of dorsomedial prefrontal cortex for negative symptoms in patients with schizophrenia: A double-blind, randomized controlled trial.

Psychiatry Res 2021 May 16;299:113876. Epub 2021 Mar 16.

First-episode Schizophrenia and Early Psychosis Program, Division of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Mental Health, Fudan University, Shanghai, China. Electronic address:

Negative symptoms are the major challenge in clinical management of schizophrenia. Dorsomedial prefrontal cortex (DMPFC) has been suggested to be highly involved in the mechanisms of negative symptoms of schizophrenia. However, the effect of repetitive Transcranial Magnetic Stimulation (rTMS) over DMPFC has not yet been well studied. Read More

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Optimize Prime/Boost Vaccine Strategies: Trained Immunity as a New Player in the Game.

Front Immunol 2021 8;12:612747. Epub 2021 Mar 8.

Center for Immunology of Viral, Auto-immune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Université Paris-Saclay, INSERM, CEA, Fontenay-aux-Roses, France.

Most vaccines require multiple doses to induce long-lasting protective immunity in a high frequency of vaccines, and to ensure strong both individual and herd immunity. Repetitive immunogenic stimulations not only increase the intensity and durability of adaptive immunity, but also influence its quality. Several vaccine parameters are known to influence adaptive immune responses, including notably the number of immunizations, the delay between them, and the delivery sequence of different recombinant vaccine vectors. Read More

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Repetitive blast mild traumatic brain injury increases ethanol sensitivity in male mice and risky drinking behavior in male combat veterans.

Alcohol Clin Exp Res 2021 Mar 24. Epub 2021 Mar 24.

VA Northwest Geriatric Research Education and Clinical Center, VA Puget Sound Health Care System, Seattle, WA, USA.

Background: Mild traumatic brain injury (mTBI) is common in civilians and highly prevalent among military service members. mTBI can increase health risk behaviors (e.g. Read More

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Frequency and Predictors of Traumatic Encephalopathy Syndrome in a Prospective Cohort of Retired Professional Athletes.

Front Neurol 2021 23;12:617526. Epub 2021 Feb 23.

Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, United States.

Traumatic encephalopathy syndrome (TES) is proposed to represent the long-term impact of repetitive head-injury exposure and the clinical manifestation of chronic traumatic encephalopathy (CTE). This study aimed to evaluate the frequency of TES in a cohort of retired professional contact sport athletes, compare the frequency of TES to clinical consensus diagnoses, and identify predictors that increase the likelihood of TES diagnosis. Participants were 85 retired professional contact sport athletes from a prospective cohort at the University of Texas Southwestern Medical Center and the University of Texas at Dallas. Read More

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February 2021

Effects of repetitive transcranial magnetic stimulation (rTMS) on aphasia in stroke patients: A systematic review and meta-analysis.

Clin Rehabil 2021 Mar 11:269215521999554. Epub 2021 Mar 11.

School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.

Objective: To evaluate the effects and safety of repetitive transcranial magnetic stimulation (rTMS) on aphasia in stroke patients.

Methods: We searched databases from inception to January 28, 2021. Randomized control trials investigating the effects and safety of rTMS for aphasia patients after stroke were included. Read More

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Changes in beta and high-gamma power in resting-state electrocorticogram induced by repetitive transcranial magnetic stimulation of primary motor cortex in unanesthetized macaque monkeys.

Neurosci Res 2021 Mar 8. Epub 2021 Mar 8.

Laboratory of Systems Neuroscience, Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan. Electronic address:

Repetitive transcranial magnetic stimulation (rTMS) is now widely used as a means of neuromodulation, but the details of the mechanisms by which rTMS works remain unclarified. As a step forward to unveiling the neural phenomena occurring underneath the TMS coil, we conducted an electrophysiological study using awake and unanesthetized monkeys with subdural electrocorticogram (ECoG) electrodes implanted over the primary motor cortex (MI). We evaluated the effects of low-frequency (1 Hz) and high-frequency (10 Hz) rTMS on the resting-state ECoG signals in the stimulated MI, as well as the motor evoked potentials (MEPs) in the contralateral hand. Read More

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Bilateral Repetitive Transcranial Magnetic Stimulation With the H-Coil in Parkinson's Disease: A Randomized, Sham-Controlled Study.

Front Neurol 2020 18;11:584713. Epub 2021 Feb 18.

Experimental Neurophysiology Unit, Institute of Experimental Neurology - INSPE, Scientific Institute Hospital San Raffaele, Milan, Italy.

Pilot open-label application of high-frequency repetitive transcranial magnetic stimulation (rTMS) with H-coil in Parkinson's Disease (PD) have shown promising results. To evaluate safety and efficacy of high-frequency rTMS with H-coil in PD in a double-blind, placebo-controlled, randomized study. Sixty patients with PD were randomized into 3 groups: M1-PFC (real stimulation on primary motor-M1 and pre-frontal cortices-PFC), M1 (real rTMS on M1, sham on PFC), Sham (apparent stimulation). Read More

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February 2021

The influence of high-frequency repetitive transcranial magnetic stimulation on endogenous estrogen in patients with disorders of consciousness.

Brain Stimul 2021 Mar 4;14(3):461-466. Epub 2021 Mar 4.

Department of Rehabilitation Medicine, Nanfang Hospital, Southern Medical University, P.R. China. Electronic address:

Background: Repetitive transcranial magnetic stimulation (rTMS) has been proposed as a promising therapeutic intervention for neurological disorders. However, the precise mechanisms of rTMS in neural excitability remains poorly understood. Estradiol is known to have strong influence on cortical excitability. Read More

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SSVEP phase synchronies and propagation during repetitive visual stimulation at high frequencies.

Sci Rep 2021 Mar 2;11(1):4975. Epub 2021 Mar 2.

Donders Institute for Brain, Cognition and Behaviour: Centre for Cognition, Radboud University, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands.

Steady-state visual evoked potentials (SSVEPs), the brain response to visual flicker stimulation, have proven beneficial in both research and clinical applications. Despite the practical advantages of stimulation at high frequencies in terms of visual comfort and safety, high frequency-SSVEPs have not received enough attention and little is known about the mechanisms behind their generation and propagation in time and space. In this study, we investigated the origin and propagation of SSVEPs in the gamma frequency band (40-60 Hz) by studying the dynamic properties of EEG in 32 subjects. Read More

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Molecular characterization of extended-spectrum β-lactamase-producing isolated from postpartum uterine infection in dairy cattle in India.

Vet World 2021 Jan 23;14(1):200-209. Epub 2021 Jan 23.

Department of Animal Reproduction and Gynecology, College of Veterinary Science and Animal Husbandry, Uttar Pradesh Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidhyalaya Ewam Gau Anusandhan Sansthan Mathura, Uttar Pradesh, India.

Background And Aim: Selection and dissemination of plasmid-encoded extended-spectrum β-lactamase (ESBL) among confers resistance to beta-lactam antibiotics. The purpose of this study was to determine the prevalence and molecular characteristics of ESBL-producing organisms isolated from dairy cattle with a uterine infection.

Materials And Methods: Bacterial isolates (n=62) were characterized by biochemical test for genus and species determination. Read More

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January 2021

The Effect of High-frequency Repetitive Transcranial Magnetic Stimulation on Reducing Depression and Anxiety in Methamphetamine Users.

Addict Health 2020 Oct;12(4):278-286

Department of Psychology, School of Educational Sciences and Psychology, University of Tehran, Tehran, Iran.

Background: Methamphetamine use has been associated with higher rates of depression and anxiety. The mesocorticolimbic dopaminergic reward system seems to play a crucial role in inducing depression and anxiety in methamphetamine users. High-frequency repetitive transcranial magnetic stimulation (rTMS) has been shown to alter dopaminergic neurotransmission considering the acute rewarding and reinforcing effects in the subcortical structure. Read More

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October 2020

Early intervention attenuates synaptic plasticity impairment and neuroinflammation in 5xFAD mice.

J Psychiatr Res 2021 04 14;136:204-216. Epub 2021 Feb 14.

College of Medicine, State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials Ministry of Education, Nankai University, Tianjin, 300071, China. Electronic address:

Background: As an increasing population of Alzheimer's disease (AD) patients year by year, which is a serious threat to human health, an effective approach to prevent and treat AD is required. Biomarker changes relevant to β-amyloid (Aβ) 20 years or more in advance of cognitive impairment, so early intervention is a feasible idea for AD therapy. Repetitive transcranial magnetic stimulation (rTMS) as a non-invasive technique offers the possibility of early intervention. Read More

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Repetitive Transcranial Magnetic Stimulation (rTMS) Improves the Gait Disorders of Rats Under Simulated Microgravity Conditions Associated With the Regulation of Motor Cortex.

Front Physiol 2021 4;12:587515. Epub 2021 Feb 4.

Institute of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.

In previous studies, it has been proved that repetitive transcranial magnetic stimulation (rTMS) improves dyskinesia induced by conditions such as spinal cord injury, Parkinson diseases and cerebral ischemia. However, it is still unknown whether it can be used as a countermeasure for gait disorders in astronauts during space flight. In this study, we evaluated the effects of rTMS on the rat gait function under simulated microgravity (SM) conditions. Read More

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February 2021

Stellate cell computational modeling predicts signal filtering in the molecular layer circuit of cerebellum.

Sci Rep 2021 Feb 16;11(1):3873. Epub 2021 Feb 16.

Department of Brain and Behavioral Sciences, University of Pavia, Via Forlanini 6, 27100, Pavia, Italy.

The functional properties of cerebellar stellate cells and the way they regulate molecular layer activity are still unclear. We have measured stellate cells electroresponsiveness and their activation by parallel fiber bursts. Stellate cells showed intrinsic pacemaking, along with characteristic responses to depolarization and hyperpolarization, and showed a marked short-term facilitation during repetitive parallel fiber transmission. Read More

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February 2021

Chronic Adaptations of the Posterior Rotator Cuff in Professional Pitchers.

Am J Sports Med 2021 03 16;49(4):892-898. Epub 2021 Feb 16.

Rothman Orthopaedic Institute, Bryn Mawr, Pennsylvania, USA.

Background: Because of the large forces and high frequency of throwing, the upper extremity experiences repetitive stresses that lead to acute and chronic adaptations. While the importance of pennation angle and muscle thickness as predictors of muscle force production has been shown in other populations and other joints, there has been little research done that examines these variables in the shoulders of baseball players.

Purpose: (1) To examine the chronic effect pitching has on the rotator cuff muscle architecture (pennation angle and muscle thickness) in healthy professional baseball pitchers, and (2) to examine the correlation between muscle architecture and clinical measures of strength and range of motion (ROM). Read More

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Cortical plasticity is correlated with cognitive improvement in Alzheimer's disease patients after rTMS treatment.

Brain Stimul 2021 Feb 11;14(3):503-510. Epub 2021 Feb 11.

Ningbo Kangning Hospital, Ningbo, Zhejiang, China. Electronic address:

Objective: Repetitive transcranial magnetic stimulation (rTMS) has been widely used in non-invasive treatments for different neurological disorders. Few biomarkers are available for treatment response prediction. This study aims to analyze the correlation between changes in long-term potentiation (LTP)-like cortical plasticity and cognitive function in patients with Alzheimer's disease (AD) that underwent rTMS treatment. Read More

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February 2021

Feasibility of TMS in patients with new generation cochlear implants.

Clin Neurophysiol 2021 Mar 5;132(3):723-729. Epub 2021 Jan 5.

Siena Brain Investigation & Neuromodulation Lab (Si-BIN Lab), Unit of Neurology and Clinical Neurophysiology, Department of Medicine, Surgery and Neuroscience, University of Siena, Italy. Electronic address: http://www.sibinlab.it.

Objective: The presence of a cochlear implant is being considered an absolute contraindication for experiments and/or treatments. We aimed to verify TMS (Transcranial Magnetic Stimulation) compatibility of a new generation of cochlear implants.

Methods: In a series of experiments, we test if MED-EL cochlear implants -compatible with stable fields of magnetic resonance imaging scanning- are fully resistant even to rapidly varying magnetic fields as those generated by single pulses and low and high-frequency trains of repetitive TMS (rTMS) applied with a figure of eight coil and different magnetic stimulators. Read More

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Distinction of High- and Low-Frequency Repetitive Transcranial Magnetic Stimulation on the Functional Reorganization of the Motor Network in Stroke Patients.

Neural Plast 2021 20;2021:8873221. Epub 2021 Jan 20.

Department of Radiology, Institute of Rehabilitation and Imaging of Brain Function, The Second Clinical Medical College of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, Sichuan, China 637000.

Objective: To investigate the functional reorganization of the motor network after repetitive transcranial magnetic stimulation (rTMS) in stroke patients with motor dysfunction and the distinction between high-frequency rTMS (HF-rTMS) and low-frequency rTMS (LF-rTMS).

Methods: Thirty-three subcortical stroke patients were enrolled and assigned to the HF-rTMS group, LF-rTMS group, and sham group. Each patient of rTMS groups received either 10. Read More

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January 2021