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Cenci GI, Rocha RB, Ferreira Bomtempo F, Nager GB, Silva GD, Figueiredo EG, Telles JPM. Efficacy of transcranial direct current stimulation in patients with dysphagia after stroke: a systematic review. Neurol Sci 2024; 45:2119-2125. [PMID: 38044393 DOI: 10.1007/s10072-023-07216-7] [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: 05/18/2023] [Accepted: 11/20/2023] [Indexed: 12/05/2023]
Abstract
BACKGROUND Swallowing is a complex function that can be disrupted after stroke. Transcranial Direct Current Stimulation (tDCS) is a non-invasive brain stimulation therapy that recently has been tested to treat stroke-related dysphagia. METHODS The authors performed a search in the literature to review the described evidence of the use of tDCS in dysphagia after stroke. Three electronic databases were searched. The risk of bias evaluation was carried out through the RoB-2 tool. The Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) framework was also implemented. RESULTS Of 265 articles, only nine studies were included in this review. The most common location of the tDCS stimulation was the unaffected hemisphere (44%). Regarding the outcome measure, the Dysphagia Outcome and Severity Scale (DOSS) was the most commonly used (55%). However, due to the high heterogeneity of the protocols, and considering the differences between the types of stroke, the authors opted not to perform a metanalysis. Instead, a systematic review with a thorough analysis of each individual study and the impact of the differences to the outcomes was preferred. CONCLUSIONS The final considerations are that even though the majority of studies described benefits from tDCS in post-stroke dysphagia, as they present too many methodological differences, it is not possible to compare them. In addition, many articles included patients with less than 6 months after stroke, which is an important bias as the swallowing function can be recovered spontaneously within this period, turning the certainty of the evidence really low.
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Affiliation(s)
| | | | | | - Gabriela Borges Nager
- School of Medicine, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
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Qi F, Nitsche MA, Ren X, Wang D, Wang L. Top-down and bottom-up stimulation techniques combined with action observation treatment in stroke rehabilitation: a perspective. Front Neurol 2023; 14:1156987. [PMID: 37497013 PMCID: PMC10367110 DOI: 10.3389/fneur.2023.1156987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023] Open
Abstract
Stroke is a central nervous system disease that causes structural lesions and functional impairments of the brain, resulting in varying types, and degrees of dysfunction. The bimodal balance-recovery model (interhemispheric competition model and vicariation model) has been proposed as the mechanism of functional recovery after a stroke. We analyzed how combinations of motor observation treatment approaches, transcranial electrical (TES) or magnetic (TMS) stimulation and peripheral electrical (PES) or magnetic (PMS) stimulation techniques can be taken as accessorial physical therapy methods on symptom reduction of stroke patients. We suggest that top-down and bottom-up stimulation techniques combined with action observation treatment synergistically might develop into valuable physical therapy strategies in neurorehabilitation after stroke. We explored how TES or TMS intervention over the contralesional hemisphere or the lesioned hemisphere combined with PES or PMS of the paretic limbs during motor observation followed by action execution have super-additive effects to potentiate the effect of conventional treatment in stroke patients. The proposed paradigm could be an innovative and adjunctive approach to potentiate the effect of conventional rehabilitation treatment, especially for those patients with severe motor deficits.
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Affiliation(s)
- Fengxue Qi
- Sports, Exercise and Brain Sciences Laboratory, Beijing Sport University, Beijing, China
| | - Michael A. Nitsche
- Department of Psychology and Neurosciences, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Xiping Ren
- College of Physical Education and Health Sciences, Zhejiang Normal University, Jinhua, China
| | - Duanwei Wang
- Shandong Mental Health Center, Shandong University, Jinan, Shandong, China
| | - Lijuan Wang
- Key Laboratory of Exercise and Physical Fitness, Ministry of Education, Beijing Sport University, Beijing, China
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, China
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Stefanovic F, Martinez JA, Saleem GT, Sisto SA, Miller MT, Achampong YA, Titus AH. A blended neurostimulation protocol to delineate cortico-muscular and spino-muscular dynamics following neuroplastic adaptation. Front Neurol 2023; 14:1114860. [PMID: 37396760 PMCID: PMC10311503 DOI: 10.3389/fneur.2023.1114860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 06/02/2023] [Indexed: 07/04/2023] Open
Abstract
In this paper we propose a novel neurostimulation protocol that provides an intervention-based assessment to distinguish the contributions of different motor control networks in the cortico-spinal system. Specifically, we use a combination of non-invasive brain stimulation and neuromuscular stimulation to probe neuromuscular system behavior with targeted impulse-response system identification. In this protocol, we use an in-house developed human-machine interface (HMI) for an isotonic wrist movement task, where the user controls a cursor on-screen. During the task, we generate unique motor evoked potentials based on triggered cortical or spinal level perturbations. Externally applied brain-level perturbations are triggered through TMS to cause wrist flexion/extension during the volitional task. The resultant contraction output and related reflex responses are measured by the HMI. These movements also include neuromodulation in the excitability of the brain-muscle pathway via transcranial direct current stimulation. Colloquially, spinal-level perturbations are triggered through skin-surface neuromuscular stimulation of the wrist muscles. The resultant brain-muscle and spinal-muscle pathways perturbed by the TMS and NMES, respectively, demonstrate temporal and spatial differences as manifested through the human-machine interface. This then provides a template to measure the specific neural outcomes of the movement tasks, and in decoding differences in the contribution of cortical- (long-latency) and spinal-level (short-latency) motor control. This protocol is part of the development of a diagnostic tool that can be used to better understand how interaction between cortical and spinal motor centers changes with learning, or injury such as that experienced following stroke.
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Affiliation(s)
- Filip Stefanovic
- Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY, United States
| | - Julian A. Martinez
- Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY, United States
| | - Ghazala T. Saleem
- Department of Rehabilitation Science, State University of New York at Buffalo, Buffalo, NY, United States
| | - Sue Ann Sisto
- Department of Rehabilitation Science, State University of New York at Buffalo, Buffalo, NY, United States
| | - Michael T. Miller
- UB Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY, United States
| | - Yaa A. Achampong
- UB Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY, United States
| | - Albert H. Titus
- Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, NY, United States
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Lin X, Zhang Y, Chen X, Wen L, Duan L, Yang L. Effects of noninvasive brain stimulation on dual-task performance in different populations: A systematic review. Front Neurosci 2023; 17:1157920. [PMID: 37113144 PMCID: PMC10128879 DOI: 10.3389/fnins.2023.1157920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/20/2023] [Indexed: 04/29/2023] Open
Abstract
Background Increasing research has investigated the use of noninvasive brain stimulation (NIBS) on augmenting dual-task (DT) performance. Objective To investigate the effects of NIBS on DT performance in different populations. Methods Extensive electronic database search (from inception to November 20, 2022) was conducted in PubMed, Medline, Cochrane Library, Web of Science and CINAHL to identify randomized controlled trials (RCTs) that investigated the effects of NIBS on DT performance. Main outcomes were balance/mobility and cognitive function under both single-task (ST) and DT conditions. Results Fifteen RCTs were included, involving two types of intervention techniques: transcranial direct current stimulation (tDCS) (twelve RCTs) and repetitive transcranial magnetic stimulation (rTMS) (three RCTs); and four different population groups: healthy young adults, older adults, Parkinson's disease (PD), and stroke. For tDCS, under DT condition, significant improvement in speed was only observed in one PD and one stroke RCT, and stride time variability in one older adults RCT. Reduction in DTC in some gait parameters was demonstrated in one RCT. Only one RCT showed significant reduction in postural sway speed and area during standing under DT condition in young adults. For rTMS, significant improvements in fastest walking speed and time taken to Timed-up-and-go test under both ST and DT conditions were observed at follow-up in one PD RCT only. No significant effect on cognitive function in any RCT was observed. Conclusion Both tDCS and rTMS showed promising effects in improving DT walking and balance performance in different populations, however, due to the large heterogeneity of included studies and insufficient data, any firm conclusion cannot be drawn at present.
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Affiliation(s)
- Xiaoying Lin
- Department of Rehabilitation Medicine, The Second People’s Hospital of Kunming, Yunnan Province, China
| | - Yanming Zhang
- Department of Rehabilitation Medicine, The Second People’s Hospital of Kunming, Yunnan Province, China
| | - Xi Chen
- Department of Rehabilitation Medicine, The Second People’s Hospital of Kunming, Yunnan Province, China
| | - Lifen Wen
- Department of Rehabilitation Medicine, The Second People’s Hospital of Kunming, Yunnan Province, China
| | - Lian Duan
- School of Rehabilitation, Kunming Medical University, Yunnan Province, China
- *Correspondence: Lian Duan, ; Lei Yang,
| | - Lei Yang
- Department of Rehabilitation Medicine, The Second People’s Hospital of Kunming, Yunnan Province, China
- *Correspondence: Lian Duan, ; Lei Yang,
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Cherni Y, Tremblay A, Simon M, Bretheau F, Blanchette AK, Mercier C. Corticospinal Responses Following Gait-Specific Training in Stroke Survivors: A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15585. [PMID: 36497663 PMCID: PMC9737604 DOI: 10.3390/ijerph192315585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Corticospinal excitability is subject to alterations after stroke. While the reversal of these alterations has been proposed as an underlying mechanism for improved walking capacity after gait-specific training, this has not yet been clearly demonstrated. Therefore, the objective of this review is to evaluate the effect of gait-specific training on corticospinal excitability in stroke survivors. We conducted an electronic database search in four databases (i.e., Medline, Embase, CINAHL and Web of Science) in June 2022. Two authors screened in an independent way all the studies and selected those that investigated the effect of gait-specific training on variables such as motor-evoked potential amplitude, motor threshold, map size, latency, and corticospinal silent period in stroke survivors. Nineteen studies investigating the effect of gait-specific training on corticospinal excitability were included. Some studies showed an increased MEP amplitude (7/16 studies), a decreased latency (5/7studies), a decreased motor threshold (4/8 studies), an increased map size (2/3 studies) and a decreased cortical silent period (1/2 study) after gait-specific training. No change has been reported in terms of short interval intracortical inhibition after training. Five studies did not report any significant effect after gait-specific training on corticospinal excitability. The results of this systematic review suggest that gait-specific training modalities can drive neuroplastic adaptation among stroke survivors. However, given the methodological disparity of the included studies, additional clinical trials of better methodological quality are needed to establish conclusions. The results of this review can therefore be used to develop future studies to better understand the effects of gait-specific training on the central nervous system.
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Affiliation(s)
- Yosra Cherni
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale, Québec City, QC G1M 2S8, Canada
- Département de Réadaptation, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada
- TOPMED, Centre Collégial de Transfert de Technologie en Orthèses, Prothèses et Équipements Médicaux, Québec City, QC G1S 1C1, Canada
| | - Alexia Tremblay
- Département de Réadaptation, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Margaux Simon
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale, Québec City, QC G1M 2S8, Canada
- Département de Réadaptation, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Floriane Bretheau
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale, Québec City, QC G1M 2S8, Canada
| | - Andréanne K. Blanchette
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale, Québec City, QC G1M 2S8, Canada
- Département de Réadaptation, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada
| | - Catherine Mercier
- Centre Interdisciplinaire de Recherche en Réadaptation et Intégration Sociale, Québec City, QC G1M 2S8, Canada
- Département de Réadaptation, Faculté de Médecine, Université Laval, Québec City, QC G1V 0A6, Canada
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