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A case of pure apraxia of speech after left hemisphere stroke: behavioral findings and neural correlates
DiscussionThis pure case of severe AOS without aphasia affords a unique window into the behavioral and neural mechanisms of this motor speech disorder. The current findings support previous observations that AOS and aphasia are dissociable and confirm a role for the precentral gyrus of the insula and BA44, as well as underlying white matter in supporting the coordination of complex articulatory movements. Additionally, other regions including the precentral gyrus, Broca’s area, and Area 55b are discussed regarding their potential role in successful speech production.
Source: Frontiers in Neurology - July 27, 2023 Category: Neurology Source Type: research

Transcranial direct current stimulation for the treatment of post-stroke depression: A systematic review
ConclusionThis article simply aims at providing a comprehensive overview of the raw data reported in this field to date. Based on the current evidence, tDCS presents promising results for the treatment of PSD. Moreover, tDCS is also effective in PSD patients with aphasia or CPSP. However, an optimal stimulation protocol is needed to formulate. Thus, the development of robustly controlled, randomized, and high-quality clinical trials to further assess the utility of tDCS as a therapeutic tool for the treatment of PSD survivors is encouraged.Systematic review registrationhttps://www.crd.york.ac.uk/prospero/display_record.php...
Source: Frontiers in Neurology - January 18, 2023 Category: Neurology Source Type: research

National Institutes of Health Stroke Scale (NIHSS) scoring inconsistencies between neurologists and emergency room nurses
ConclusionsOne-in-three initial NIHSS assessed by both a neurologist and RN had a clinically meaningful score difference between providers. More severe stroke, as indicated by a higher NIHSS was associated with scoring inconsistency between neurologist-RN pairs. Subjective scoring measures, especially those involving a patient having aphasia, was associated with greater score incongruency. Score differences may be attributed to differences in NIHSS training requirements between neurologists and RNs.
Source: Frontiers in Neurology - January 11, 2023 Category: Neurology Source Type: research

Language reorganization patterns in global aphasia –evidence from fNIRS
ConclusionThe left SMG plays a critical role in the language function of patients with global aphasia, especially in their abilities to name and repeat. fNIRS is a promising approach to revealing the changes in brain activities in patients with aphasia, and we believe it will contribute to a deeper understanding of the neurological mechanisms and the establishment of a novel treatment approach for global aphasia.
Source: Frontiers in Neurology - January 6, 2023 Category: Neurology Source Type: research

Comparison of the efficacy of acupuncture-related Therapies for post-stroke motor aphasia: A Bayesian network meta-analysis
ConclusionThe NMA showed that STA combined with ST may be the best treatment to improve CER, compared with other combination treatments. However, since the overall quality and number of studies are limited, further RCTs with a large sample and multicenter are needed for further validation.Systematic review registrationhttps://www.crd.york.ac.uk/prospero/display_record.php?RecordID=316081, identifier CRD42022316081.
Source: Frontiers in Neurology - December 20, 2022 Category: Neurology Source Type: research

Case report: MELAS and concomitant presumed antiphospholipid antibody syndrome in an adult woman
Mitochondrial encephalomyopathy, lactic acidosis, stroke-like episodes, and other features (short stature, headaches, seizures, and sensorineural hearing loss) constitute characteristics of MELAS syndrome. MELAS is a rare condition due to mutations in maternally inherited mitochondrial DNA with levels of heteroplasmy possibly related to late adulthood presentation. A previously reported MELAS case coexisted with presumed Antiphospholipid Antibody Syndrome (APLAS), but the connection between MELAS and a potential APLAS is unclear. A 29-year-old woman presented with mild right-sided sensorimotor symptoms and mixed aphasia in...
Source: Frontiers in Neurology - December 14, 2022 Category: Neurology Source Type: research

Dyslexia and dysgraphia of primary progressive aphasia in Chinese: A systematic review
ConclusionThis paper provides the latest comprehensive demographic information and unique presentations on the reading and writing of Chinese-speaking patients with PPA. More detailed studies are needed to address the frequency of errors in reading and writing and their anatomical substrates.
Source: Frontiers in Neurology - December 6, 2022 Category: Neurology Source Type: research

Modulations of static and dynamic functional connectivity among brain networks by electroacupuncture in post-stroke aphasia
This study aimed to investigate the PSA-related effects of EA stimulation at HT5 and GB39 on neural processing. Thirty-five participants were recruited, including 19 patients with PSA and 16 healthy controls (HCs). The BOLD signal was analyzed by static independent component analysis, generalized psychophysiological interactions, and dynamic independent component analysis, considering variables such as age, sex, and years of education.ResultsThe results revealed that PSA showed activated clusters in the left putamen, left postcentral gyrus (PostCG), and left angular gyrus in the salience network (SN) compared to the HC gro...
Source: Frontiers in Neurology - December 1, 2022 Category: Neurology Source Type: research

Longitudinal changes in functional connectivity in speech motor networks in apraxia of speech after stroke
ConclusionEarly interhemispheric IFG connectivity may be a strong predictor of AOS recovery. The results support the importance of interhemispheric vPMC connection in speech motor planning and severity of AOS and suggest that also bilateral aINS connectivity may have an impact on AOS severity. These findings need to be validated in larger cohorts.
Source: Frontiers in Neurology - November 30, 2022 Category: Neurology Source Type: research

Risk profile, clinical presentation, and determinants of stroke subtypes among patients with stroke admitted to public referral hospitals, Northwest Ethiopia in 2021: A cross-sectional study
ConclusionAge, the level of sedentary physical activity, absence of a family history of chronic illness, hypertension, and past stroke were independent determinants of stroke subtype.
Source: Frontiers in Neurology - October 25, 2022 Category: Neurology Source Type: research

A precise language network revealed by the independent component-based lesion mapping in post-stroke aphasia
Brain lesion mapping studies have provided the strongest evidence regarding the neural basis of cognition. However, it remained a problem to identify symptom-specific brain networks accounting for observed clinical and neuroanatomical heterogeneity. Independent component analysis (ICA) is a statistical method that decomposes mixed signals into multiple independent components. We aimed to solve this issue by proposing an independent component-based lesion mapping (ICLM) method to identify the language network in patients with moderate to severe post-stroke aphasia. Lesions were first extracted from 49 patients with post-str...
Source: Frontiers in Neurology - September 30, 2022 Category: Neurology Source Type: research

Prevalence and risk factors of stroke-related sarcopenia at the subacute stage: A case control study
ConclusionsOlder age, light weight, severer clinical conditions, cognitive impairment, and significantly decreased levels of albumin, RAG, creatinine, uric acid, red blood cell count, hemoglobin, prealbumin, iron, and creatine kinase are more significantly present in patients with SRS compared with those without SRS.
Source: Frontiers in Neurology - August 8, 2022 Category: Neurology Source Type: research

Admission Serum Calcium Level and Short-Term Mortality After Acute Ischemic Stroke: A Secondary Analysis Based on a Norwegian Retrospective Cohort
ConclusionACSC is positively associated with 30-day mortality in IS patients, and the relationship between them is linear.
Source: Frontiers in Neurology - June 15, 2022 Category: Neurology Source Type: research

Risk Factors for Postischemic Stroke Epilepsy in Young Adults: A Nationwide Population-Based Study in Taiwan
ConclusionsStroke severity, aphasia, malignancy, and drug abuse were associated increased risk of PSE and statin use may protect against PSE in young adults. Reducing the severity of stroke, statin use and controlling unhealthy behaviors might be able to decrease the development of PSE. Since PSE is associated with poor outcomes, early identification or intervention of PSE based on the risk factors might reduce the harmful effects of PSE.
Source: Frontiers in Neurology - May 20, 2022 Category: Neurology Source Type: research

Significance of Vertigo, Imbalance, and Other Minor Symptoms in Hyperacute Treatment of Posterior Circulation Stroke
ConclusionsThis study failed to show differences in outcome in patients with PCS according to how AVS/AIS is addressed in the stroke thrombolysis code. In patients with minor PCS, AVS/AIS was associated with a benign clinical course. Prompt identification of prodromal AVS/AIS is essential.
Source: Frontiers in Neurology - May 16, 2022 Category: Neurology Source Type: research

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