9 results on '"Leigh Charvet"'
Search Results
2. Editorial: Neurotechnology for sensing the brain out of the lab: methods and applications for mobile functional neuroimaging
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Hasan Ayaz, Frederic Dehais, Giuseppina Pilloni, Leigh Charvet, and Marom Bikson
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electroencephalography (EEG) ,functional near-infrared spectroscopy (fNIRS) ,transcranial direct-current stimulation (tDCS) ,neuroergonomics ,neurotechnology ,neuromodulation ,Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2024
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3. Simultaneous and cumulative effects of tDCS on cerebral metabolic rate of oxygen in multiple sclerosis
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Marco Muccio, Giuseppina Pilloni, Lillian Walton Masters, Peidong He, Lauren Krupp, Abhishek Datta, Marom Bikson, Leigh Charvet, and Yulin Ge
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transcranial direct current stimulation ,multiple sclerosis ,MRI ,neuronal metabolism ,cerebrovascular changes ,tDCS-aCT paired treatment ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
IntroductionTranscranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique with simultaneous (during stimulation) and cumulative effects (after repeated sessions) on blood flow and neuronal metabolism. These effects remain mostly unclear especially in multiple sclerosis (MS). This work aims to elucidate brain metabolic and hemodynamic underpinnings of tDCS and its potential therapeutic impact in MS patients using quantitative tDCS-MRI.MethodsMS participants (n = 20; age = 45.4 ± 12.3 years, 7 males) underwent 3 T MRI scans before and after 20 daily sessions of dorsolateral prefrontal cortex (DLFPC) tDCS (2.0 mA, left anodal) paired with adaptive cognitive training (aCT). During both visits, imaging measurements of cerebral blood flow (CBF), cerebral venous blood oxygenation (Yv) and calculated cerebral metabolic rate of oxygen (CMRO2) were obtained at pre-tDCS, during-tDCS and post-tDCS.ResultsAt baseline, significant increase from pre- to during-tDCS was observed in CMRO2 (7.6%; p = 0.002), CBF (11.0%; p
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- 2024
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4. Home-administered transcranial direct current stimulation is a feasible intervention for depression: an observational cohort study
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Leigh Charvet, Allan George, Erik Charlson, Matthew Lustberg, Amy Vogel-Eyny, Tehila Eilam-Stock, Hyein Cho, Pamela Best, Luis Fernandez, Abhishek Datta, Marom Bikson, Kamran Nazim, and Giuseppina Pilloni
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depression ,non-invasive brain stimulation ,telehealth ,home-based tDCS ,digital health ,transcranial direct current stimulation (tDCS) ,Psychiatry ,RC435-571 - Abstract
Transcranial direct current stimulation (tDCS) is an emerging treatment for major depression. We recruited participants with moderate-to-severe major depressive episodes for an observational clinical trial using Soterix Medical's tDCS telehealth platform as a standard of care. The acute intervention consisted of 28 sessions (5 sessions/week, 6 weeks) of the left anodal dorsolateral prefrontal cortex (DLPFC) tDCS (2.0 mA × 30 min) followed by a tapering phase of weekly sessions for 4 weeks (weeks 7–10). The n = 16 completing participants had a significant reduction in depressive symptoms by week 2 of treatment [Montgomery–Åsberg Depression Rating Scale (MADRS), Baseline: 28.00 ± 4.35 vs. Week 2: 17.12 ± 5.32, p < 0.001] with continual improvement across each biweekly timepoint. Acute intervention responder and remission rates were 75 and 63% and 88 and 81% following the taper period (week 10).
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- 2023
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5. Remotely supervised at-home tDCS for veterans with persistent post-traumatic headache: a double-blind, sham-controlled randomized pilot clinical trial
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Leigh Charvet, Adam T. Harrison, Kiersten Mangold, Robert Davis Moore, Siyuan Guo, Jiajia Zhang, Abhishek Datta, and X. Michelle Androulakis
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veterans ,tDCS ,mTBI ,post-traumatic headache ,brain injury ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
BackgroundCurrently, there are no FDA approved therapies for persistent post-traumatic headache (PPTH) secondary to traumatic brain injury (TBI). As such neither headache nor TBI specialists have an effective means to manage PPTH. Thus, the objective of the present pilot trial was to evaluate the feasibility and preliminary efficacy of a four-week at-home remotely supervised transcranial direct current stimulation (RS-tDCS) intervention for veterans with PPTH.MethodsTwenty-five (m = 46.6 ± 8.7 years) veterans with PPTH were randomized into two groups and received either active (n = 12) or sham (n = 13) RS-tDCS, with anodal stimulation over left dlPFC and cathodal over occipital pole. Following a four-week baseline, participants completed 20–sessions of active or sham RS-tDCS with real-time video monitoring over a period of four-weeks. Participants were assessed again at the end of the intervention and at four-weeks post-intervention. Primary outcomes were overall adherence rate (feasibility) and change in moderate-to-severe headache days per month (efficacy). Secondary outcomes were changes in total number of headache days, and PPTH-related functional outcomes.ResultsAdherence rate was high with 88% of participants (active = 10/12; sham = 12/13) fully completing tDCS interventions. Importantly, there was no significant difference in adherence between active and sham groups (p = 0.59). Moderate-to-severe headache days were significantly reduced within the active RS-tDCS group (p = 0.004), compared to sham during treatment (−2.5 ± 3.5 vs. 2.3 ± 3.4), and 4-week follow-up (−3.9 ± 6.4 vs. 1.2 ± 6.5). Total number of headache days was significantly reduced within the active RS-tDCS (p = 0.03), compared to sham during-treatment (−4.0 ± 5.2 vs. 1.5 ± 3.8), and 4-week follow-up (−2.1 ± 7.2 vs. −0.2 ± 4.4).ConclusionThe current results indicate our RS-tDCS paradigm provides a safe and effective means for reducing the severity and number of headache days in veterans with PPTH. High treatment adherence rate and the remote nature of our paradigm indicate RS-tDCS may be a feasible means to reduce PPTH, especially for veterans with limited access to medical facilities.Clinical Trial Registration: ClinicalTrials.gov, identifier [NCT04012853].
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- 2023
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6. Neuromodulation Strategies to Reduce Inflammation and Improve Lung Complications in COVID-19 Patients
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Christopher J. Czura, Marom Bikson, Leigh Charvet, Jiande D. Z. Chen, Manfred Franke, Marat Fudim, Eric Grigsby, Sam Hamner, Jared M. Huston, Navid Khodaparast, Elliot Krames, Bruce J. Simon, Peter Staats, and Kristl Vonck
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vagus nerve (VN) stimulation ,sacral nerve electrical stimulation ,COVID-19 ,cytokine storm ,acute respiratory distress (ARDS) ,cranial nerve stimulation ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Since the outbreak of the COVID-19 pandemic, races across academia and industry have been initiated to identify and develop disease modifying or preventative therapeutic strategies has been initiated. The primary focus has been on pharmacological treatment of the immune and respiratory system and the development of a vaccine. The hyperinflammatory state (“cytokine storm”) observed in many cases of COVID-19 indicates a prognostically negative disease progression that may lead to respiratory distress, multiple organ failure, shock, and death. Many critically ill patients continue to be at risk for significant, long-lasting morbidity or mortality. The human immune and respiratory systems are heavily regulated by the central nervous system, and intervention in the signaling of these neural pathways may permit targeted therapeutic control of excessive inflammation and pulmonary bronchoconstriction. Several technologies, both invasive and non-invasive, are available and approved for clinical use, but have not been extensively studied in treatment of the cytokine storm in COVID-19 patients. This manuscript provides an overview of the role of the nervous system in inflammation and respiration, the current understanding of neuromodulatory techniques from preclinical and clinical studies and provides a rationale for testing non-invasive neuromodulation to modulate acute systemic inflammation and respiratory dysfunction caused by SARS-CoV-2 and potentially other pathogens. The authors of this manuscript have co-founded the International Consortium on Neuromodulation for COVID-19 to advocate for and support studies of these technologies in the current coronavirus pandemic.
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- 2022
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7. Mobile Attention Bias Modification Training Is a Digital Health Solution for Managing Distress in Multiple Sclerosis: A Pilot Study in Pediatric Onset
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Leigh Charvet, Allan George, Hyein Cho, Lauren B. Krupp, and Tracy A. Dennis-Tiwary
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multiple sclerosis ,pediatric onset multiple sclerosis ,pediatric neurology ,attention bias modification training ,anxiety ,distress ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Introduction: Emotional health is important dimension of care for patients living with pediatric onset multiple sclerosis (POMS), but few options are available for stress and anxiety reduction. The high burden of interventions requiring regular in person and onsite visits for treatment are less feasible. Attention bias modification training (ABMT) is effective for anxiety reduction in adult and adolescent populations. We tested the feasibility and preliminary efficacy of ABMT delivered through a mobile gamified version as a digital emotional health tool for patients with POMS.Methods: Participants with POMS were consecutively recruited from the NYU Langone Pediatric MS Care Center and enrolled to complete a 1-month intervention with use of the Personal Zen ABMT app on their mobile personal device. Feasibility was evaluated by use of the 1-month intervention and efficacy was measured by changes in depression, anxiety, and affect.Results: A total n = 35 patients with POMS were enrolled in the study (Mage = 17.7, SD = 2.2 years, range 14–23). Feasibility criteria were met with 74% completing the full intervention time, and 100% of the sample completing at least 50% of targeted intervention use. Initial efficacy was found for a reduction in negative affect from baseline to intervention end [M = 22.88, SD = 9.95 vs. M = 19.56, SD = 7.37; t(33) = 2.47, p = 0.019]. Anxiety also significantly decreased from pre to post-intervention in adults [M = 11.82, SD = 9.90 vs. M = 7.29, SD = 7.17; t(16) = 3.88, p = 0.001] and youth [M = 51.14, SD = 19.66 vs. M = 40.86, SD = 27.48; t(13) = 3.17, p = 0.007].Conclusion: Mobile ABMT with the Personal Zen app is a feasible and accessible digital emotional health tool for patients with POMS and may have broader application for managing distress across chronic neurological conditions.
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- 2021
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8. Adverse Childhood Experiences Are Linked to Age of Onset and Reading Recognition in Multiple Sclerosis
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Natalie Pawlak, Ariana Frontario, Lauren Krupp, Michael Shaw, Leigh Charvet, and Kathleen Sherman
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medicine.medical_specialty ,multiple sclerosis ,lcsh:RC346-429 ,03 medical and health sciences ,0302 clinical medicine ,age of onset ,medicine ,premorbid IQ ,Psychiatry ,Adverse Childhood Experiences ,Adverse effect ,lcsh:Neurology. Diseases of the nervous system ,Original Research ,Multiple sclerosis ,Neuropsychology ,childhood abuse ,medicine.disease ,030227 psychiatry ,Clinical trial ,Neurology ,Reading comprehension ,Cognitive remediation therapy ,Neurology (clinical) ,adverse childhood experiences ,Age of onset ,Psychology ,030217 neurology & neurosurgery ,Neuroscience - Abstract
Background Adverse childhood experiences (ACEs) exert a psychological and physiological toll that increases risk of chronic conditions, poorer social functioning, and cognitive impairment in adulthood. Objective To investigate the relationship between childhood adversity and clinical disease features in multiple sclerosis (MS). Methods Sixty-seven participants with MS completed the ACE assessment and neuropsychological assessments as part of a larger clinical trial of cognitive remediation. Results Adverse childhood experience scores, a measure of exposure to adverse events in childhood, significantly predicted age of MS onset (r = –0.30, p = 0.04). ACEs were also linked to reading recognition (a proxy for premorbid IQ) (r = –0.25, p = 0.04). ACE scores were not related to age, current disability, or current level of cognitive impairment measured by the Symbol Digit Modalities Test (SDMT). Conclusion Childhood adversity may increase the likelihood of earlier age of onset and poorer estimated premorbid IQ in MS.
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- 2017
9. Remotely-supervised transcranial direct current stimulation (tDCS) for clinical trials: guidelines for technology and protocols
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Marom Bikson, Abhishek Datta, Helena Knotkova, Michael C. Stevens, Kevin R. Krull, Colleen Loo, Leigh Charvet, Margaret Kasschau, and Angelo Alonzo
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medicine.medical_specialty ,Palliative care ,medicine.medical_treatment ,Cognitive Neuroscience ,Population ,Neuroscience (miscellaneous) ,multiple sclerosis ,Session (web analytics) ,tDCS ,lcsh:RC321-571 ,Cellular and Molecular Neuroscience ,Developmental Neuroscience ,Methods ,Medicine ,education ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,Protocol (science) ,education.field_of_study ,clinical trials ,palliative care ,Transcranial direct-current stimulation ,business.industry ,Clinical supervision ,Clinical trial ,attention deficit hyperactivity disorder ,Tolerability ,depression ,Physical therapy ,business ,Neuroscience - Abstract
The effect of transcranial direct current stimulation (tDCS) is cumulative. Treatment protocols typically require multiple consecutive sessions spanning weeks or months. However, traveling to clinic for a tDCS session can present an obstacle to subjects and their caregivers. With modified devices and headgear, tDCS treatment can be administered remotely under clinical supervision, potentially enhancing recruitment, throughput, and convenience. Here we propose standards and protocols for clinical trials utilizing remotely-supervised tDCS with the goal of providing safe, reproducible and well-tolerated stimulation therapy outside of the clinic. The recommendations include: (1) training of staff in tDCS treatment and supervision; (2) assessment of the user’s capability to participate in tDCS remotely; (3) ongoing training procedures and materials including assessments of the user and/or caregiver; (4) simple and fail-safe electrode preparation techniques and tDCS headgear; (5) strict dose control for each session; (6) ongoing monitoring to quantify compliance (device preparation, electrode saturation/placement, stimulation protocol), with corresponding corrective steps as required; (7) monitoring for treatment-emergent adverse effects; (8) guidelines for discontinuation of a session and/or study participation including emergency failsafe procedures tailored to the treatment population’s level of need. These guidelines are intended to provide a minimal level of methodological rigor for clinical trials seeking to apply tDCS outside a specialized treatment center. We outline indication-specific applications (Attention Deficit Hyperactivity Disorder, Depression, Multiple Sclerosis, Palliative Care) following these recommendations that support a standardized framework for evaluating the tolerability and reproducibility of remote-supervised tDCS that, once established, will allow for translation of tDCS clinical trials to a greater size and range of patient populations.
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- 2015
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