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Takahashi MTC, Balardin JB, Bazán PR, Boasquevisque DDS, Amaro E, Conforto AB. Effect of transcranial direct current stimulation in the initial weeks post-stroke: a pilot randomized study. EINSTEIN-SAO PAULO 2024; 22:eAO0450. [PMID: 38922218 PMCID: PMC11196089 DOI: 10.31744/einstein_journal/2024ao0450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 09/18/2023] [Indexed: 06/27/2024] Open
Abstract
OBJECTIVE This study aimed at assessing the alterations in upper limb motor impairment and connectivity between motor areas following the post-stroke delivery of cathodal transcranial direct current stimulation sessions. METHODS Modifications in the Fugl-Meyer Assessment scores, connectivity between the primary motor cortex of the unaffected and affected hemispheres, and between the primary motor and premotor cortices of the unaffected hemisphere were compared prior to and following six sessions of cathodal transcranial direct current stimulation application in 13 patients (active = 6; sham = 7); this modality targets the primary motor cortex of the unaffected hemisphere early after a stroke. RESULTS Clinically relevant distinctions in Fugl-Meyer Assessment scores (≥9 points) were observed more frequently in the Sham Group than in the Active Group. Between-group differences in the alterations in Fugl-Meyer Assessment scores were not statistically significant (Mann-Whitney test, p=0.133). ROI-to-ROI correlations between the primary motor cortices of the affected and unaffected hemispheres post-therapeutically increased in 5/6 and 2/7 participants in the Active and Sham Groups, respectively. Between-group differences in modifications in connectivity between the aforementioned areas were not statistically significant. Motor performance enhancements were more frequent in the Sham Group compared to the Active Group. CONCLUSION The results of this hypothesis-generating investigation suggest that heightened connectivity may not translate into early clinical benefits following a stroke and will be crucial in designing larger cohort studies to explore mechanisms underlying the impacts of this intervention. ClinicalTrials.gov Identifier: NCT02455427.
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Affiliation(s)
- Marcela Tengler Carvalho Takahashi
- Hospital Municipal da Vila Santa Catarina Dr. Gilson Cássia Marques de CarvalhoHospital Israelita Albert EinsteinSão PauloSPBrazilHospital Municipal da Vila Santa Catarina Dr. Gilson Cássia Marques de Carvalho ; Hospital Israelita Albert Einstein,São Paulo, SP, Brazil.
| | - Joana Bisol Balardin
- Hospital Israelita Albert EinsteinSão PauloSPBrazil Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | - Paulo Rodrigo Bazán
- Hospital Israelita Albert EinsteinSão PauloSPBrazil Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | - Danielle de Sá Boasquevisque
- Division of NeurologyPopulation Health Research InstitutMcMaster UniversityHamiltonOntarioCanada Division of Neurology, Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada.
| | - Edson Amaro
- Hospital Israelita Albert EinsteinSão PauloSPBrazil Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | - Adriana Bastos Conforto
- Hospital Israelita Albert EinsteinSão PauloSPBrazil Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
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Mehta T, Cleland B, Madhavan S. Barriers to Enrollment in a Post-Stroke Neuromodulation and Walking Study: Implications for Recruiting Women. Neurorehabil Neural Repair 2024; 38:207-213. [PMID: 38314561 PMCID: PMC10939762 DOI: 10.1177/15459683241230028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
BACKGROUND Women have a higher risk of stroke and related disability than men but are underrepresented in stroke clinical trials. Identifying modifiable recruitment and enrollment barriers for women can improve study generalizability, statistical power, and resource utilization. OBJECTIVE In a post-stroke neuromodulation study, we determined the impact of sex on the occurrence of exclusion criteria and compared the sex distribution of screened and enrolled individuals with a broader stroke-affected population. METHODS A total of 335 individuals with chronic stroke were screened for a study examining how neuromodulation and high-intensity treadmill training affect walking speed and corticomotor excitability. Demographics and exclusions were retrospectively gathered as a secondary dataset. Exclusion criteria consisted of 6 categories (not target population, unable to do treadmill protocol, unable to do non-invasive brain stimulation, insufficient ankle motion and disinterest, and cognitive impairment). Incidence of each exclusion criterion was compared between women and men. The sex distribution was compared to a dataset from Chicago primary stroke centers. RESULTS A total of 81 individuals were enrolled and 254 were not. The percentage of women excluded was significantly greater than that of men (P = .04). No individual exclusion criterion or categories excluded women more frequently than men. Screened and enrolled individuals had a lower proportion of women and younger age than a representative stroke population (P < .001). CONCLUSIONS We identified exclusion criteria (ie, headaches, cognitive scores, and age) that are modifiable barriers to enrollment of women in this post-stroke neuromodulation study. Addressing underrepresentation of women in stroke research is pivotal for enhancing generalizability, achieving statistical power, and optimizing resources.
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Affiliation(s)
- Twinkle Mehta
- Chicago Medical School, Rosalind Franklin University
| | - Brice Cleland
- Brain Plasticity Lab, Department of Physical Therapy, College of Applied Health Sciences University of Illinois Chicago, Chicago, IL, USA
| | - Sangeetha Madhavan
- Brain Plasticity Lab, Department of Physical Therapy, College of Applied Health Sciences University of Illinois Chicago, Chicago, IL, USA
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Kolls BJ, Muir KW, Savitz SI, Wechsler LR, Pilitsis JG, Rahimi S, Beckman RL, Holmes V, Chen PR, Albers DS, Laskowitz DT. Experience with a hybrid recruitment approach of patient-facing web portal screening and subsequent phone and medical record review for a neurosurgical intervention trial for chronic ischemic stroke disability (PISCES III). Trials 2024; 25:150. [PMID: 38419030 PMCID: PMC10900735 DOI: 10.1186/s13063-024-07988-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Recruitment of participants is the greatest risk to completion of most clinical trials, with 20-40% of trials failing to reach the targeted enrollment. This is particularly true of trials of central nervous system (CNS) therapies such as intervention for chronic stroke. The PISCES III trial was an invasive trial of stereotactically guided intracerebral injection of CTX0E03, a fetal derived neural stem cell line, in patients with chronic disability due to ischemic stroke. We report on the experience using a novel hybrid recruitment approach of a patient-facing portal to self-identify and perform an initial screen for general trial eligibility (tier 1), followed by phone screening and medical records review (tier 2) prior to a final in-person visit to confirm eligibility and consent. METHODS Two tiers of screening were established: an initial screen of general eligibility using a patient-facing web portal (tier 1), followed by a more detailed screen that included phone survey and medical record review (tier 2). If potential participants passed the tier 2 screen, they were referred directly to visit 1 at a study site, where final in-person screening and consent were performed. Rates of screening were tracked during the period of trial recruitment and sources of referrals were noted. RESULTS The approach to screening and recruitment resulted in 6125 tier 1 screens, leading to 1121 referrals to tier 2. The tier 2 screening resulted in 224 medical record requests and identification of 86 qualifying participants for referral to sites. The study attained a viable recruitment rate of 6 enrolled per month prior to being disrupted by COVID 19. CONCLUSIONS A tiered approach to eligibility screening using a hybrid of web-based portals to self-identify and screen for general eligibility followed by a more detailed phone and medical record review allowed the study to use fewer sites and reduce cost. Despite the difficult and narrow population of patients suffering moderate chronic disability from stroke, this strategy produced a viable recruitment rate for this invasive study of intracranially injected neural stem cells. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03629275.
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Affiliation(s)
- Brad J Kolls
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, USA.
- Department of Neurology, Duke University School of Medicine, Duke Box 2900 Bryan Research Building, 311 Research Drive, Durham, NC, 27710, USA.
| | - Keith W Muir
- School of Psychology & Neuroscience, University of Glasgow, Queen Elizabeth University Hospital, Glasgow, Scotland, UK
| | - Sean I Savitz
- Institute for Stroke and Cerebrovascular Disease, University of Texas Health Science Center, Houston, TX, USA
| | - Lawrence R Wechsler
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Julie G Pilitsis
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, USA
| | - Scott Rahimi
- Department of Neurosurgery, Medical College of Georgia, Augusta, GA, USA
| | | | | | - Peng R Chen
- The Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center, Houston, TX, USA
| | | | - Daniel T Laskowitz
- Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC, USA
- Department of Neurology, Duke University School of Medicine, Duke Box 2900 Bryan Research Building, 311 Research Drive, Durham, NC, 27710, USA
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Hodics T, Cohen LG, Pezzullo JC, Kowalske K, Dromerick AW. Barriers to Enrollment in Post-Stroke Brain Stimulation in a Racially and Ethnically Diverse Population. Neurorehabil Neural Repair 2022; 36:596-602. [PMID: 35925037 DOI: 10.1177/15459683221088861] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Brain stimulation is an adjuvant strategy to promote rehabilitation after stroke. Here, we evaluated the influence of inclusion/exclusion criteria on enrollment in a transcranial direct current stimulation (tDCS) trial in the context of a racially/ethnically diverse acute stroke service at University of Texas Southwestern (UTSW). METHODS 3124 (59.7 ± 14.5 years) racially/ethnically diverse (38.4% non-Hispanic white, (W), Hispanic (H) 22%, African American (AA) 33.5%, Asian (A) 2.3%) patients were screened in the acute stroke service at UTSW. Demographics, stroke characteristics, and reasons for exclusion were recorded prospectively. RESULTS 2327 (74.5%) patients had a verified stroke. Only 44 of them (1.9%) were eligible. Causes for exclusion included in order of importance: (1) magnitude of upper extremity (UE) motor impairment, (2) prior strokes (s), (3) hemorrhagic stroke, (4) psychiatric condition or inability to follow instructions, and (5) old age, of these (2) and (4) were more common in AA patients but not in other minorities. 31 of the 44 eligible individuals were enrolled (W 1.68%, H 1.37%, AA .77%, A 3.774%). 90.5% of verified stroke patients did not exhibit contraindications for stimulation. CONCLUSIONS 3 main conclusions emerged: (a) The main limitations for inclusion in brain stimulation trials of motor recovery were magnitude of UE motor impairments and stroke lesion characteristics, (b) most stroke patients could be stimulated with tDCS without safety concerns and (c) carefully tailored inclusion criteria could increase diversity in enrollment.Clinical Trial Registration-URL: http://clinicaltrials.gov. Unique identifier: NCT01007136.
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Affiliation(s)
- Timea Hodics
- Department of Neurology and Neurotherapeutics, 12334University of Texas Southwestern Medical Center, Dallas, TX, USA.,Department of Neurology, 23534Houston Methodist Hospital, Houston, TX, USA
| | - Leonardo G Cohen
- Human Cortical Physiology and Stroke Neurorehabilitation Section, National Institutes of Health, 35046National Institutes of Neurological Disorders and Stroke, Bethesda, MD, USA
| | - John C Pezzullo
- Department of Medicine, 8368Georgetown University Medical Center, Washington, DC, USA
| | - Karen Kowalske
- Department of Physical Medicine and Rehabilitation, 12334University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Alexander W Dromerick
- Department of Rehabilitation Medicine and Neurology, MedStar National Rehabilitation Hospital, Washington, DC, USA.,8368Center for Brain Plasticity and Recovery, Departments of Rehabilitation Medicine and Neurology, Georgetown University Medical Center, Washington, DC USA.,Research Division, MedStar National Rehabilitation Hospital, Washington, DC, USA
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Feasibility and Safety of Transcranial Direct Current Stimulation in an Outpatient Rehabilitation Setting After Stroke. Brain Sci 2020; 10:brainsci10100719. [PMID: 33050340 PMCID: PMC7599981 DOI: 10.3390/brainsci10100719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/02/2020] [Accepted: 10/06/2020] [Indexed: 12/13/2022] Open
Abstract
Transcranial direct current stimulation (tDCS) has strong potential for outpatient clinical use, but feasibility and safety of tDCS has only been evaluated in laboratory and inpatient clinical settings. The objective of this study was to assess feasibility and safety of tDCS for stroke in an outpatient clinical setting. Individuals with stroke in outpatient therapy received tDCS during physical therapy sessions. Feasibility was assessed with screening, enrollment, withdrawal, and adherence numbers, tDCS impressions, and perceived benefits and detriments of tDCS. Acute changes in fatigue and self-reported function and pre-post changes in fatigue were also assessed. Safety was assessed as adverse events and side effects. In total, 85 individuals were screened, and 10 were enrolled. Most exclusions were unrelated to clinical feasibility. In total, 3 participants withdrew, so 7 participants completed 2 sessions/week for 5–6 weeks with 100% adherence. In total, 71% reported positive impressions of tDCS. tDCS setup decreased to 5–7 min at end of study. There was one adverse event unrelated to tDCS. Mild to moderate side effects (tingling, itching, pinching, and fatigue) were experienced. In total, 86% of participants recounted benefits of tDCS. There were acute improvements in function and energy. Results support the feasibility and safety of tDCS in an outpatient clinical setting.
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Ferreira IS, Pinto CB, Saleh Velez FG, Leffa DT, Vulcano de Toledo Piza P, Fregni F. Recruitment challenges in stroke neurorecovery clinical trials. Contemp Clin Trials Commun 2019; 15:100404. [PMID: 31360793 PMCID: PMC6639562 DOI: 10.1016/j.conctc.2019.100404] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 06/17/2019] [Accepted: 06/25/2019] [Indexed: 12/12/2022] Open
Abstract
There are multiple available treatments to enhance stroke rehabilitation, although few interventions have confirmed significant clinical improvements on motor function in pivotal Randomized Clinical Trials. Development of large Randomized Clinical Trials is limited by several barriers and low enrollment rate is considered an important factor. Consequently, most of the evidence comes from small sample size studies, often leading to limited conclusions. According to the National Institute of Health (NIH), about 80% of clinical trials in the United States do not achieve their timelines, increasing research costs and postponing regulatory approval of new therapies. Given that the success of a Randomized Clinical Trial is dependent on enrolling an adequate number of subjects, effective strategies to enhance recruitment rates are highly desirable. In addition, given the resources and time limitations, it is important to understand which strategies are most cost-effective. In this manuscript, we summarize and discuss nine recruitment strategies used in an NIH R21 sponsored clinical trial, including medical records review and online advertising, among others. In addition, we developed an index to compare the time spent benefit of each approach and guide the allocation of the recruitment efforts. For this trial, online advertising and referral from health care professionals other than physicians were the strategies with greater time-benefit, leading to the largest number of stroke subjects enrolled.
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Affiliation(s)
- Isadora Santos Ferreira
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Physics and Rehabilitation Department, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, USA
| | - Camila Bonin Pinto
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Physics and Rehabilitation Department, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, USA.,Department of Neuroscience and Behavior, Psychology Institute, University of Sao Paulo, Sao Paulo, Brazil
| | - Faddi Ghassan Saleh Velez
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Physics and Rehabilitation Department, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, USA.,University of Chicago Medical Center, Department of Neurology, University of Chicago, Chicago, IL, USA
| | - Douglas Teixeira Leffa
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Physics and Rehabilitation Department, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, USA.,Laboratory of Pain Pharmacology and Neuromodulation: Pre-Clinical Studies - Pharmacology Department, Institute of Basic Health Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Polyana Vulcano de Toledo Piza
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Physics and Rehabilitation Department, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, USA.,Albert Einstein Hospital, Intensive Care Department, Sao Paulo, Brazil
| | - Felipe Fregni
- Laboratory of Neuromodulation & Center for Clinical Research Learning, Physics and Rehabilitation Department, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, USA
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Pires DS, Boasquevisque DDS, Speciali DS, Silva GS, Conforto AB. Success of promotion strategies for a stroke rehabilitation protocol. ACTA ACUST UNITED AC 2018; 64:443-447. [PMID: 30304144 DOI: 10.1590/1806-9282.64.05.443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 11/02/2017] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To prospectively evaluate the success of promotion strategies for a protocol of motor rehabilitation strategies for patients with stroke at Albert Einstein Hospital. METHODS In a clinical trial of neuromodulation and rehabilitation for patients with stroke, conventional methods of dissemination and publications about the research protocol in social networks or on the hospital's website were performed. Frequencies of types of advertisements that reached potentially eligible subjects were calculated. RESULTS Data from 80 potentially eligible patients were analyzed. The types of ads that motivated contacts more frequently were social media (38.8%) and information provided to physicians from other hospitals (23.8%) (p=0,288). The frequencies of contacts motivated by publications on the internet (53%) and conventional strategies (47%) were similar. Facebook was the digital strategy associated with the higher number of contacts, followed by the hospital's website. CONCLUSION Social networks and websites can be as effective as traditional methods of advertisement, in order to reach patients for stroke rehabilitation protocols. These results may have an impact on the planning of clinical trials, including studies that evaluate effects of rehabilitation interventions in patients with stroke.
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Wathen CA, Frizon LA, Maiti TK, Baker KB, Machado AG. Deep brain stimulation of the cerebellum for poststroke motor rehabilitation: from laboratory to clinical trial. Neurosurg Focus 2018; 45:E13. [PMID: 30064319 DOI: 10.3171/2018.5.focus18164] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Ischemic stroke is a leading cause of disability worldwide, with profound economic costs. Poststroke motor impairment is the most commonly encountered deficit resulting in significant disability and is the primary driver of stroke-associated healthcare expenditures. Although many patients derive some degree of benefit from physical rehabilitation, a significant proportion continue to suffer from persistent motor impairment. Noninvasive brain stimulation, vagal nerve stimulation, epidural cortical stimulation, and deep brain stimulation (DBS) have all been studied as potential modalities to improve upon the benefits derived from physical therapy alone. These neuromodulatory therapies aim primarily to augment neuroplasticity and drive functional reorganization of the surviving perilesional cortex. The authors have proposed a novel and emerging therapeutic approach based on cerebellar DBS targeted at the dentate nucleus. Their rationale is based on the extensive reciprocal connectivity between the dentate nucleus and wide swaths of cerebral cortex via the dentatothalamocortical and corticopontocerebellar tracts, as well as the known limitations to motor rehabilitation imposed by crossed cerebellar diaschisis. Preclinical studies in rodent models of ischemic stroke have shown that cerebellar DBS promotes functional recovery in a frequency-dependent manner, with the most substantial benefits of the therapy noted at 30-Hz stimulation. The improvements in motor function are paralleled by increased expression of markers of synaptic plasticity, synaptogenesis, and neurogenesis in the perilesional cortex. Given the findings of preclinical studies, a first-in-human trial, Electrical Stimulation of the Dentate Nucleus Area (EDEN) for Improvement of Upper Extremity Hemiparesis Due to Ischemic Stroke: A Safety and Feasibility Study, commenced in 2016. Although the existing preclinical evidence is promising, the results of this Phase I trial and subsequent clinical trials will be necessary to determine the future applicability of this therapy.
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Affiliation(s)
| | - Leonardo A Frizon
- 2Center for Neurological Restoration, Neurological Institute, Cleveland Clinic
| | - Tanmoy K Maiti
- 3Department of Neurosurgery, Neurological Institute, Cleveland Clinic; and
| | - Kenneth B Baker
- 4Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Andre G Machado
- 3Department of Neurosurgery, Neurological Institute, Cleveland Clinic; and
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Plow EB, Sankarasubramanian V, Potter-Baker KA, Lin YL. Reply to "Need for updating safety recommendations on repetitive transcranial magnetic stimulation in stroke patients". Clin Neurophysiol 2017; 128:1544-1545. [PMID: 28662931 DOI: 10.1016/j.clinph.2017.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 05/20/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Ela B Plow
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Center for Neurological Restoration, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Physical Medicine and Rehabilitation, Neurological Institute, Cleveland Clinic, Cleveland, OH 44195, USA.
| | - Vishwanath Sankarasubramanian
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Neuromodulation Laboratory, Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Kelsey A Potter-Baker
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Louis Stokes Cleveland Department of Veteran's Affairs, Advanced Platform Technology Center, Cleveland, OH, USA
| | - Yin-Liang Lin
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
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