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Kleih SC, Botrel L. Inconclusive results of slow cortical potential neurofeedback for the treatment of chronic post-stroke attention deficits. Front Hum Neurosci 2024; 18:1301622. [PMID: 38646162 PMCID: PMC11026669 DOI: 10.3389/fnhum.2024.1301622] [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: 09/25/2023] [Accepted: 03/06/2024] [Indexed: 04/23/2024] Open
Abstract
Introduction Individuals who have suffered a stroke may experience long-lasting cognitive impairments that can worsen if left untreated. We investigated whether voluntary control of slow cortical potentials (SCP) through neurofeedback would help alleviate chronic post-stroke symptoms of impaired attention. Methods The study initially enrolled twenty-eight participants, but due to a high drop-out rate, only sixteen participants completed eight SCP neurofeedback training sessions within three to four weeks. During these sessions, we gave feedback to the participants on their ability to regulate SCPs on a computer screen. Results Our findings showed a non-significant increase in SCP regulation towards cortical negativity. On the behavioral level, we found improved test values in the divided attention and attentional flexibility subtests of the test battery for attention performance. However, we cannot eliminate the possibility that nonspecific effects influenced or caused our results. We have not observed any improvement regarding the effects of attention deficits on participants' daily lives. We identified five individuals who could gain SCP control successfully and consistently towards negativity. In this group of responders, we observed an improvement in the test results related to divided attention but no other attention-related improvements. Discussion Based on our observations, results of SCP neurofeedback training for the treatment of attention deficits after a stroke are inconclusive. More research is necessary to determine the effectiveness of SCP neurofeedback in helping stroke survivors cope with attention-related challenges in their daily lives.
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Affiliation(s)
- Sonja C Kleih
- Institute of Psychology, Biological Psychology Clinical Psychology and Psychotherapy, Faculty of Human Sciences, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
| | - Loic Botrel
- Institute of Psychology, Biological Psychology Clinical Psychology and Psychotherapy, Faculty of Human Sciences, Julius-Maximilians-Universität Würzburg, Würzburg, Germany
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Yan M, Liu J, Guo Y, Hou Q, Song J, Wang X, Yu W, Lü Y. Comparative efficacy of non-invasive brain stimulation for post-stroke cognitive impairment: a network meta-analysis. Aging Clin Exp Res 2024; 36:37. [PMID: 38345751 PMCID: PMC10861650 DOI: 10.1007/s40520-023-02662-x] [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] [Received: 08/08/2023] [Accepted: 11/14/2023] [Indexed: 02/15/2024]
Abstract
BACKGROUND Non-invasive brain stimulation (NIBS) is a burgeoning approach with the potential to significantly enhance cognition and functional abilities in individuals who have undergone a stroke. However, the current evidence lacks robust comparisons and rankings of various NIBS methods concerning the specific stimulation sites and parameters used. To address this knowledge gap, this systematic review and meta-analysis seek to offer conclusive evidence on the efficacy and safety of NIBS in treating post-stroke cognitive impairment. METHODS A systematic review of randomized control trials (RCT) was performed using Bayesian network meta-analysis. We searched RCT in the following databases until June 2022: Cochrane Central Register of Controlled Trials (CENTRAL), PUBMED, and EMBASE. We compared any active NIBS to control in terms of improving cognition function and activities of daily living (ADL) capacity following stroke. RESULTS After reviewing 1577 retrieved citations, a total of 26 RCTs were included. High-frequency (HF)-repetitive transcranial magnetic stimulation (rTMS) (mean difference 2.25 [95% credible interval 0.77, 3.66]) was identified as a recommended approach for alleviating the global severity of cognition. Dual-rTMS (27.61 [25.66, 29.57]) emerged as a favorable technique for enhancing ADL function. In terms of stimulation targets, the dorsolateral prefrontal cortex exhibited a higher ranking in relation to the global severity of cognition. CONCLUSIONS Among various NIBS techniques, HF-rTMS stands out as the most promising intervention for enhancing cognitive function. Meanwhile, Dual-rTMS is highly recommended for improving ADL capacity.
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Affiliation(s)
- Mengyu Yan
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yu Zhong District, , Chongqing, 400016, China
- Institute of Neuroscience, Chongqing Medical University, No. 1 Yixuayuan Road, Yu Zhong District, Chongqing, 400016, China
| | - Jiarui Liu
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yu Zhong District, , Chongqing, 400016, China
| | - Yiming Guo
- Institute of Neuroscience, Chongqing Medical University, No. 1 Yixuayuan Road, Yu Zhong District, Chongqing, 400016, China
| | - Qingtao Hou
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yu Zhong District, , Chongqing, 400016, China
| | - Jiaqi Song
- Institute of Neuroscience, Chongqing Medical University, No. 1 Yixuayuan Road, Yu Zhong District, Chongqing, 400016, China
| | - Xiaoqin Wang
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yu Zhong District, , Chongqing, 400016, China
| | - Weihua Yu
- Institute of Neuroscience, Chongqing Medical University, No. 1 Yixuayuan Road, Yu Zhong District, Chongqing, 400016, China.
| | - Yang Lü
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yu Zhong District, , Chongqing, 400016, China.
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Basagni B, Malloggi S, Polito C, Pellicciari L, Campagnini S, Pancani S, Mannini A, Gemignani P, Salvadori E, Marignani S, Giovannelli F, Viggiano MP, Hakiki B, Grippo A, Macchi C, Cecchi F. MoCA Domain-Specific Pattern of Cognitive Impairment in Stroke Patients Attending Intensive Inpatient Rehabilitation: A Prospective Study. Behav Sci (Basel) 2024; 14:42. [PMID: 38247694 PMCID: PMC10813017 DOI: 10.3390/bs14010042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/18/2023] [Accepted: 12/24/2023] [Indexed: 01/23/2024] Open
Abstract
A domain-specific perspective to cognitive functioning in stroke patients may predict their cognitive recovery over time and target stroke rehabilitation intervention. However, data about domain-specific cognitive impairment after stroke are still scarce. This study prospectively investigated the domain-specific pattern of cognitive impairments, using the classification proposed by the Montreal Cognitive Assessment (MoCA), in a cohort of 49 stroke patients at admission (T0), discharge (T1), and six-month follow-up (T2) from subacute intensive rehabilitation. The predictive value of T0 cognitive domains cognitive impairment at T1 and T2 was also investigated. Patients' cognitive functioning at T0, T1, and T2 was assessed through the MoCA domains for executive functioning, attention, language, visuospatial, orientation, and memory. Different evolutionary trends of cognitive domain impairments emerged across time-points. Patients' impairments in all domains decreased from T0 to T1. Attention and executive impairments decreased from T0 to T2 (42.9% and 26.5% to 10.2% and 18.4%, respectively). Conversely, altered visuospatial, language, and orientation increased between T1 and T2 (16.3%, 36.7%, and 40.8%, respectively). Additionally, patients' global cognitive functioning at T1 was predicted by the language and executive domains in a subacute phase (p = 0.031 and p = 0.001, respectively), while in the long term, only attention (p = 0.043) and executive (p = 0.019) domains intervened. Overall, these results confirm the importance of a domain-specific approach to target cognitive recovery across time in stroke patients.
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Affiliation(s)
- Benedetta Basagni
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Serena Malloggi
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Cristina Polito
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Leonardo Pellicciari
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Silvia Campagnini
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Silvia Pancani
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Andrea Mannini
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Paola Gemignani
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Emilia Salvadori
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Sara Marignani
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Fabio Giovannelli
- Department of NEUROFARBA, University of Florence, 50143 Firenze, Italy; (F.G.); (M.P.V.)
| | - Maria Pia Viggiano
- Department of NEUROFARBA, University of Florence, 50143 Firenze, Italy; (F.G.); (M.P.V.)
| | - Bahia Hakiki
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Antonello Grippo
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
| | - Claudio Macchi
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
- Department of Experimental and Clinical Medicine, University of Florence, 50143 Firenze, Italy
| | - Francesca Cecchi
- IRCCS Fondazione Don Carlo Gnocchi, 50143 Firenze, Italy; (B.B.); (S.M.); (C.P.); (L.P.); (S.P.); (A.M.); (P.G.); (E.S.); (S.M.); (B.H.); (A.G.); (C.M.); (F.C.)
- Department of Experimental and Clinical Medicine, University of Florence, 50143 Firenze, Italy
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Chi X, Fan X, Fu G, Liu Y, Zhang Y, Shen W. Research trends and hotspots of post-stroke cognitive impairment: a bibliometric analysis. Front Pharmacol 2023; 14:1184830. [PMID: 37324494 PMCID: PMC10267734 DOI: 10.3389/fphar.2023.1184830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023] Open
Abstract
Background: Post-stroke cognitive impairment (PSCI) is a major complication of stroke that affects more than one-third of stroke survivors, threatening their quality of life and increasing the risk of disability and death. Although various studies have described the etiology, epidemiology, and risk factors of PSCI, there are a limited number of comprehensive and accurate reports on research trends and hotspots in this field. Therefore, this review aimed to evaluate research trends, hotspots, and frontiers in PSCI using bibliometric analysis. Methods: We screened the literature spanning 20 years in the Web of Science Core Collection: Science Citation Index Expanded (SCI-Expanded) database from 1 January 2003 to 31 December 2022. We included all eligible literature reports based on our comprehensive search strategy, inclusion criteria, and exclusion criteria. The analysis of annual publications, countries/regions, institutions, journals, co-cited references, and keywords was conducted using CiteSpace and VOSviewer, and the hotspots and major findings of PSCI were summarized. Results: A total of 1,024 publications were included in this review. We found that the number of publications on PSCI increased annually. These publications were published in 75 countries or regions by over 400 institutions. Although Chinese institutions had the highest number of publications, their international influence was limited. The United States showed a strong influence in the field. The journal "Stroke" published the most publications (57) with a high impact factor and was considered the most co-cited journal. The most frequently cited references focused on the prevalence, incidence, neuropsychological assessment scales, criteria, and guidelines of PSCI. The strongest citation burst keywords for PSCI were "neurotrophic factor" and "synaptic plasticity", which were regarded as research focuses and research hotspots, respectively. Conclusion: This review provided a comprehensive summary of the literature of PSCI, identified the authoritative and frequently cited literature and journals, clarified the trends in PSCI research, and highlighted the hotspots in this field. Currently, studies on the mechanisms and treatment of PSCI are limited, and we hope that this review has effectively highlighted the research trajectory of PSCI and will lay the foundation for more innovative research in the future.
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Affiliation(s)
| | | | | | | | | | - Wei Shen
- *Correspondence: Yunling Zhang, ; Wei Shen,
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Wang Y, Yang L, Liu J. Causal Associations between Functional/Structural Connectivity and Stroke: A Bidirectional Mendelian Randomization Study. Biomedicines 2023; 11:1575. [PMID: 37371670 DOI: 10.3390/biomedicines11061575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/21/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Disruption of brain resting-state networks (RSNs) is known to be related to stroke exposure, but determining causality can be difficult in epidemiological studies. We used data on genetic variants associated with the levels of functional (FC) and structural connectivity (SC) within 7 RSNs identified from a genome-wide association study (GWAS) meta-analysis among 24,336 European ancestries. The data for stroke and its subtypes were obtained from the MEGASTROKE consortium, including up to 520,000 participants. We conducted a two-sample bidirectional Mendelian randomization (MR) study to investigate the causality relationship between FC and SC within 7 RSNs and stroke and its subtypes. The results showed that lower global mean FC and limbic network FC were associated with a higher risk of any ischemic stroke and small vessel stroke separately. Moreover, ventral attention network FC and default mode network SC have a positive causal relationship with the risk of small vessel stroke and large artery stroke, respectively. In the inverse MR analysis, any stroke and large artery stroke were causally related to dorsal attention network FC and somatomotor FC, respectively. The present study provides genetic support that levels of FC or SC within different RSNs have contrasting causal effects on stroke and its subtypes. Moreover, there is a combination of injury and compensatory physiological processes in brain RSNs following a stroke. Further studies are necessary to validate our results and explain the physiological mechanisms.
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Affiliation(s)
- Yisong Wang
- Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Longtao Yang
- Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Jun Liu
- Department of Radiology, The Second Xiangya Hospital of Central South University, Changsha 410011, China
- Clinical Research Center for Medical Imaging in Hunan Province, Changsha 410011, China
- Department of Radiology Quality Control Center in Hunan Province, Changsha 410011, China
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The effects of exercise intervention on cognition and motor function in stroke survivors: a systematic review and meta-analysis. Neurol Sci 2023; 44:1891-1903. [PMID: 36781567 DOI: 10.1007/s10072-023-06636-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 01/20/2023] [Indexed: 02/15/2023]
Abstract
BACKGROUND Cognitive impairment was a common sequela among stroke survivors, and exercise intervention was a promising non-pharmacological treatment modality for it. PURPOSE To explore the effects of exercise intervention programs on cognitive and motor function in patients with cognitive impairment after stroke. STUDY DESIGN Systematic review and meta-analysis. METHODS Seven online databases (PubMed, Embase, Cochrane Library, Web of Science, Scopus, PsycInfo, and SPORTDiscus) were searched from their inception to 10 February 2022. Randomised controlled trials (RCTs) comparing the effects of exercise with non-exercise rehabilitation, using the Montreal Cognitive Assessment, Addenbrooke's Cognitive Examination, Mini-Mental State Examination, Trial Making Test, Upper and Lower Extremity Fugl-Meyer Assessment, Berg Balance Scale, and Barthel Index, were selected. Calculations for each assessment were performed for the overall effect and the therapy of interest, taking into account the effect of stroke severity or stimulus parameters. RESULTS Twelve RCTs involving 975 participants and investigating nine different types of exercise interventions were included. The results were not affected by participant characteristics or reactive balance outcomes. Our results emphasise the importance of lightweight and operable aerobic exercises. Exercise itself had a high potential to improve cognitive impairment and motor function after stroke. CONCLUSIONS Exercise had significant positive effects on alleviating cognitive and motor impairments after stroke.
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Zhang M, Wang K, Xie L, Pan X. Short-term Montreal Cognitive Assessment predicts functional outcome after endovascular therapy. Front Aging Neurosci 2022; 14:808415. [PMID: 35992595 PMCID: PMC9382115 DOI: 10.3389/fnagi.2022.808415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 07/01/2022] [Indexed: 11/24/2022] Open
Abstract
Background The previous studies have shown that cognition in patients 4–8 weeks after stroke can predict early functional outcomes after stroke. The analyses of data from the REVASCAT trial proved that stent thrombectomy improves post-morbid wiring test outcomes in patients with AIS compared with drug therapy. However, few studies focus on the relationship between cognitive impairment and functional outcomes in patients undergoing endovascular treatment. Methods A total of 647 participants registered from stroke centers. Stroke severity was evaluated by National Institutes of Health stroke scale (NIHSS). The functional status was estimated by modified Rankin scale (mRS). The cognitive impairment was assessed by trained neurologists at 14 (±4) and 90 (±7) days after stroke onset using the Montreal Cognitive Assessment (MoCA). A MoCA score of less than 26 was considered post-stroke cognitive impairment (PSCI). Results A total of 120 Patients who underwent endovascular therapy were included. The PSCI group had higher levels of age, men, educational status, atrial fibrillation, smoking, alcoholism, Alberta Stroke Program Early CT (ASPECT) score of the anterior circulation, and OTP time than the non-PSCI group (p < 0.05). In contrast, the 14-day MoCA score, 14-day NIHSS score, 3-month MoCA score, 3-month NIHSS score, 3-month mRS score, and 3-month EQ5D score were lower in those PSCI patients. The risk predictors of PSCI were age, sex, educational level, atrial fibrillation, smoking, alcoholism, ASPECT Score (anterior circulation), 14-day MoCA score, and 14-day NIHSS score. There were strong relationships between 3-month NIHSS and MoCA (r = –0.483, p < 0.001). Receiver operating characteristic (ROC) curve indicated that 14-day MoCA score, memory, abstraction, visuospatial/executive functions, attention, and language, played a significant role to predict PSCI [area under the curve (AUC) > 0.7]. It had predictive value for the 14-day visuospatial/executive functions to predict 3-month functional outcomes. Conclusion Early application of the MoCA in different cognitive regions could predict the PSCI and future functional outcomes, which is necessary to screen high-risk patients with poor prognosis and conduct an early intervention.
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