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Motor Evoked Potentials Publications | LitMetric

29,258 results match your criteria: "Motor Evoked Potentials"

Article Synopsis
  • Balance dysfunction affects a significant number of stroke patients, with existing therapies like virtual reality therapy (VRT) and repetitive transcranial magnetic stimulation (rTMS) showing promise in improving balance but lacking research on their combined effectiveness.
  • This study involved a randomized controlled trial with 136 stroke patients, who were divided into four groups: one receiving VRT, another undergoing rTMS, a third getting both treatments, and a control group doing traditional balance training.
  • Participants were evaluated over 4 weeks using various balance and mobility assessments, aiming to determine the impact of the combined treatment on balance function and brain plasticity.
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Potentiation of Motor Adaptation Via Cerebellar tACS: Characterization of the Stimulation Frequency.

Cerebellum

December 2024

Laboratorio de Cognición y Comportamiento Sensoriomotor, Departamento de Kinesiología, Facultad de Artes y Educación Física, Universidad Metropolitana de Ciencias de la Educación, Santiago, Chile.

Motor adaptation is critical to update motor tasks in new or modified environmental conditions. While the cerebellum supports error-based adaptations, its neural implementation is partially known. By controlling the frequency of cerebellar transcranial alternating current stimulation (c-tACS), we can test the influence of neural oscillation from the cerebellum for motor adaptation.

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Background: Systemic luus erythematosus (SLE) is a chronic, inflammatory, autoimmune disease, characterized by multiple organ involvement, which is seen more often in young females.

Objectives: To evaluate the hearing and balance functions in SLE patients.

Materials And Methods: Twenty-four SLE patients, 24 healthy controls underwent pure tone audiometry (0.

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Preoperative nTMS analysis: a sensitive tool to detect imminent motor deficits in brain tumor patients.

Acta Neurochir (Wien)

October 2024

Department of Neurosurgery, Charité - Universitätsmedizin, Berlin, Germany, Image Guidance Lab, Luisenstraße 58-60, 10117, Berlin, Germany.

Article Synopsis
  • This study investigates how adding extra neurophysiological parameters from navigated Transcranial Magnetic Stimulation (nTMS) affects risk assessments for motor disorders after brain tumor surgery in areas controlling movement.
  • Data from 170 patients with gliomas were analyzed, measuring factors like resting motor threshold and cortical silent period before surgery, along with tracking motor function recovery post-op.
  • Results indicated some preliminary associations between certain nTMS parameters and worsened motor outcomes after surgery, particularly at one week and three months, but these findings lacked consistent statistical reliability in deeper analyses.
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Comparing the effects of anodal and cathodal transcranial direct current stimulation of primary motor cortex at varying intensities on motor learning in healthy young adults.

Eur J Neurosci

November 2024

Non-invasive Brain Stimulation & Neuroplasticity Laboratory, Department of Physiotherapy, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, Australia.

Inconsistent results are observed in the effects of transcranial direct current stimulation (tDCS) with different montages on motor learning. This study aimed to compare the effects of anodal and cathodal tDCS (c-tDCS) over primary motor cortex (M1) at different intensities on motor learning in healthy young adults. The participants were randomly divided into: (1) 1 mA M1 c-tDCS, (2) 1 mA M1 anodal tDCS (a-tDCS), (3) 2 mA M1 c-tDCS, (4) 2 mA M1 a-tDCS and (5) M1 sham tDCS groups.

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Objectives: This study aimed to investigate the impact of vitamin D deficiency on vestibular function and recurrence in patients with benign paroxysmal positional vertigo.

Methods: This study enrolled 138 patients diagnosed with benign paroxysmal positional vertigo. Vestibular function was evaluated, including ocular vestibular evoked myogenic potentials, cervical vestibular evoked myogenic potentials and caloric tests.

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Background: Robotic exoskeletons have changed rehabilitation care available to people after spinal cord injury (SCI). Yet, the current evidence base is insufficient to identify the optimal dose and neurophysiological mechanism of robotic exoskeleton gait training (RGT) as an effective rehabilitation approach. This study will (1) examine whether the frequency of RGT after motor incomplete SCI impacts function and health outcomes, (2) analyze the neuroplastic effects of RGT dose, and (3) evaluate the safety, tolerability, and feasibility of delivering RGT.

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Attentional management of cognitive-motor interference in adults during walking: Insights from an EEG study.

Neuroscience

November 2024

Univ. Grenoble Alpes, CNRS, UMR 5525, VetAgro Sup, Grenoble INP, TIMC, 38000 Grenoble, France. Electronic address:

Dual-task paradigms, which involve performing cognitive and motor tasks simultaneously, are commonly used to study how attentional resources are allocated and managed under varying task demands. This study aimed to investigate cognitive-motor interferences (CMI) under different levels of cognitive and motor task difficulty without instruction on task prioritization. 17 healthy young adults performed an auditory oddball task with increasing cognitive and motor (walking vs.

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This study introduces an alternative approach to electroencephalography (EEG) time-frequency analysis based on time-varying autoregressive (TV-AR) models in a cascade configuration to independently monitor key EEG spectral components. The method is evaluated for its neurophysiological interpretation and effectiveness in motor-related brain-computer interface (BCI) applications. Specifically, we assess the ability of the tracked EEG poles to discriminate between rest, movement execution (ME) and movement imagination (MI) in healthy subjects, as well as movement attempts (MA) in individuals with spinal cord injury (SCI).

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Numerous studies have reported that long-term sports training can affect inhibitory control and induce brain functional alterations. However, the influence of environmental dynamics in sports training on inter-cortical connectivity has not been well studied. In the current study, we used twin-coil transcranial magnetic stimulation to investigate the functional connectivity between dorsolateral prefrontal cortex (DLPFC) and ipsilateral primary motor cortex (M1) during proactive and reactive inhibition in participants with sports skills in dynamic environment (open-skill experts), stable environment (closed-skill experts), and no sports skills (controls).

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Introduction: Relapsing-Remitting Multiple Sclerosis manifests various motor symptoms including impairments in corticospinal tract integrity, whose symptoms can be assessed using transcranial magnetic stimulation. Several factors, such as exercise and interlimb coordination, can influence the plastic changes in corticospinal tract. Previous work in healthy and chronic stroke survivors showed that the greatest improvement in corticospinal plasticity occurred during in-phase bilateral exercises of the upper limbs.

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Multiple sclerosis (MS) is a central nervous system disease involving gray and white matters. Transcranial magnetic stimulation (TMS) and magnetic resonance imaging (MRI) could help identify potential markers of disease evolution, disability, and treatment response. This work evaluates the relationship between intracortical inhibition and facilitation, motor cortex lesions, and corticospinal tract (CST) integrity.

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Purpose: The study's objective was to evaluate the functioning of sacculocollic and vestibulomasseteric reflex pathways in individuals with vestibular migraine and migraine.

Method: Seventy-five participants aged 18-50 years were selected for the study. Participants were divided into three groups.

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Changes in Hoffmann reflex (H-reflex) exhibit heterogeneity among patients with amyotrophic lateral sclerosis (ALS), likely due to phenotype diversity. Current knowledge primarily focuses on soleus H-reflex, which may demonstrate an initial increase before subsequent decline throughout the disease course. The main objective was to investigate other muscles, to determine whether H-reflex changes could be associated with patient phenotype (onset site, functional disabilities).

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Stopping initiated actions is fundamental to adaptive behavior. Longstanding, single-process accounts of action-stopping have been challenged by recent, two-process, "pause-then-cancel" models. These models propose that action-stopping involves two inhibitory processes: ) a fast Pause process, which broadly suppresses the motor system as the result of detecting any salient event, and ) a slower Cancel process, which involves motor suppression specific to the cancelled action.

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Brain-computer interface (BCI) offers a novel means of communication and control for individuals with disabilities and can also enhance the interactions between humans and machines for the broader population. This paper explores the brain neural signatures of unmanned aerial vehicle (UAV) operators in emergencies and develops an operator's electroencephalography (EEG) signals-based detection method for UAV emergencies. We found regularity characteristics similar to classic event-related potential (ERP) components like visual mismatch negativity (vMMN) and contingent negative variation (CNV).

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Comparative analysis of classic and delayed Ménière's disease: clinical characteristics and endolymphatic hydrops manifestations in an Asian cohort.

Eur Arch Otorhinolaryngol

March 2025

ENT Institute and Otorhinolaryngology Department, Affiliated Eye and ENT Hospital, Fudan University, Fenyang Road No.83, Shanghai, 200031, China.

Article Synopsis
  • The study aimed to compare clinical characteristics and endolymphatic hydrops (ELH) manifestations between patients with delayed Ménière's disease (DMD) and classic Ménière's disease (CMD).
  • It involved analyzing data from 523 MD patients, where findings revealed that DMD patients have a higher prevalence of bilateral MD and more severe hearing loss than those with CMD.
  • Results showed that 100% of affected ears in both groups had ELH, but DMD patients had a significantly higher occurrence of contralateral ELH, indicating possible common mechanisms behind both disease types.
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Changes of Otolith and Balance Function Related to Cochlear Implant in Hearing Loss With Inner Ear Malformations Children.

Clin Otolaryngol

January 2025

Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China.

Objectives: The increase of bilateral cochlear implantation (CI) in recent years has made it essential to comprehend the effects of CI on otolith function. This study aimed to investigate the development of gross motor and otolith function in patients with inner ear malformations (IEMs) using vestibular-evoked myogenic potentials (VEMPs).

Materials And Methods: Overall, 78 patients with sensorineural hearing loss (SNHL) (age 5.

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Article Synopsis
  • - This study explores how the brain controls and monitors motor responses, focusing on low-level sensory processing and high-level response evaluation using the Theory of Event Coding (TEC).
  • - Researchers used a visuomotor task to analyze movement-related cortical potentials (MRCPs) and identified different brain signal components related to stimulus processing, motor response preparation, and evaluation of response outcomes.
  • - The findings highlight the sequential activation of motor control signals and the role of statistical methods like Residual Iteration Decomposition (RIDE) and Multivariate Pattern Analysis (MVPA) in understanding the relationship between sensory processing and motor execution, particularly how the brain evaluates actions as they occur.
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Speech and swallowing are complex motor acts that depend upon the integrity of input neural signals from motor cortical areas to control muscles of the head and neck. Lesions damaging these neural pathways result in weakness of key muscles causing dysarthria and dysphagia, leading to profound social isolation and risk of aspiration and suffocation. Here we show that Deep Brain Stimulation (DBS) of the motor thalamus improved speech and swallowing functions in two participants with dysarthria and dysphagia.

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Reduced auditory perception and brain response with quiet TMS coil.

Brain Stimul

December 2024

Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, USA; Department of Electrical and Computer Engineering, Duke University, USA; Department of Neurosurgery, Duke University School of Medicine, USA; Department of Biomedical Engineering, Duke University, USA. Electronic address:

Background: Electromagnetic forces in transcranial magnetic stimulation (TMS) coils generate a loud clicking sound that produces confounding auditory activation and is potentially hazardous to hearing. To reduce this noise while maintaining stimulation efficiency similar to conventional TMS coils, we previously developed a quiet TMS double containment coil (qTMS-DCC).

Objective: To compare the stimulation strength, perceived loudness, and EEG response between qTMS-DCC and a commercial TMS coil.

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Objective: After severe corticospinal tract damage poststroke in humans, some recovery of strength and movement proximally is evident. It is possible that alternate motor pathways, such as the reticulospinal tract, may be upregulated to compensate for the loss of corticospinal tract input. We investigated the extent of reticulospinal tract excitability modulation and its inter-dependence on the severity of corticospinal tract damage after stroke in humans.

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Article Synopsis
  • Traumatic brain injury (TBI) is a significant cause of mortality and disability in the U.S., and the peripheral vestibular system may be particularly at risk for damage in those with TBI.
  • A study utilized cervical and ocular vestibular evoked myogenic potentials (VEMPs) and video head impulse tests (vHIT) to assess vestibular function and quality of life among individuals with chronic moderate-severe TBI compared to non-injured participants.
  • Results indicated that a high percentage (63%) of TBI patients exhibited abnormal VEMP responses and reported vestibular symptoms, with many indicating these symptoms adversely affected their quality of life, underscoring the importance of vestibular testing for effective rehabilitation.
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Article Synopsis
  • The research challenges the belief that complete spinal cord transection leads to irreversible loss of motor function and sensation, demonstrating significant recovery in animal models using polyethylene glycol (PEG) applied directly to the injury site.
  • Two Macaca fascicularis monkeys underwent complete dorsal cord transection and were studied for motor recovery, with one receiving PEG treatment showing near-complete recovery at 18 months, while the control without PEG remained paralyzed.
  • Findings indicate that PEG can facilitate neural repair and functional recovery in primates, suggesting potential for future applications in human spinal cord injury treatment.
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Vestibular Dysfunction in Euthyroid Children with Hashimoto's Thyroiditis.

J Int Adv Otol

September 2024

Department of Pediatric Endocrinology, University of Health Sciences, Umraniye Training and Research Hospital, İstanbul, Türkiye.

Article Synopsis
  • - The study examined the link between autoimmune thyroid disorders (specifically Hashimoto thyroiditis) and vestibular dysfunction in children, comparing 36 kids with the disorder to 30 healthy controls.
  • - The findings showed no significant differences in cVEMP results between the two groups, but there were noteworthy differences in vestibular-ocular reflex (VOR) gain, indicating vestibular problems in children with Hashimoto thyroiditis.
  • - An alarming 80.6% of children with Hashimoto thyroiditis exhibited low VOR gain scores, suggesting they may have subclinical vestibulopathy, highlighting the potential of vHIT as a screening tool for these issues.
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