Filtered By:
Specialty: Neuroscience
Procedure: MRI Scan

This page shows you your search results in order of relevance.

Order by Relevance | Date

Total 221 results found since Jan 2013.

Significance of longitudinal changes in the default‐mode network for cognitive recovery after stroke
Abstract Although a considerable number of patients suffer from cognitive impairments after stroke, the neural mechanism of cognitive recovery has not yet been clarified. Repeated resting‐state functional magnetic resonance imaging (fMRI) was used in this study to examine longitudinal changes in the default‐mode network (DMN) during the 6 months after stroke, and to investigate the relationship between DMN changes and cognitive recovery. Out of 24 initially recruited right‐hemispheric stroke patients, 11 (eight males, mean age 55.7 years) successfully completed the repeated fMRI protocol. Patients underwent three f...
Source: European Journal of Neuroscience - June 16, 2014 Category: Neuroscience Authors: Ji‐Young Park, Yun‐Hee Kim, Won Hyuk Chang, Chang‐hyun Park, Yong‐Il Shin, Sung Tae Kim, Alvaro Pascual‐Leone Tags: Research Report Source Type: research

Diagnostic approach to functional recovery: functional magnetic resonance imaging after stroke.
Authors: Havsteen I, Madsen KH, Christensen H, Christensen A, Siebner HR Abstract Stroke remains the most frequent cause of handicap in adult life and according to the WHO the second cause of death in the Western world. In the peracute phase, intravenous thrombolysis and in some cases endovascular therapy may induce early revascularization and hereby improve prognosis. However, only up to 20-25% of patients are eligible to causal treatment. Further, care in a specialized stroke unit improves prognosis in all patients independent of age and stroke severity. Even when it is not possible to prevent tissue loss, the su...
Source: Frontiers of Neurology and Neuroscience - December 2, 2015 Category: Neuroscience Tags: Front Neurol Neurosci Source Type: research

Changes in structure and perfusion of grey matter tissues during recovery from Ischaemic subcortical stroke: a longitudinal MRI study
This study provides the imaging evidence of structural and vascular plasticity after stroke and expands our understanding of neurobiology of stroke recovery.
Source: European Journal of Neuroscience - September 4, 2017 Category: Neuroscience Authors: Xinfeng Yu, Linglin Yang, Ruirui Song, Yerfan Jiaerken, Jun Yang, Min Lou, Quan Jiang, Minming Zhang Tags: Research Report Source Type: research

Cardiac Imaging After Ischemic Stroke or Transient Ischemic Attack
This article summarizes the latest research on this topic and provides an approach to clinical practice to use cardiac imaging after stroke.Recent FindingsEchocardiography remains the primary imaging method for cardiac work-up after stroke. Recent echocardiography studies further demonstrated promising results regarding the prediction of non-permanent atrial fibrillation after ischemic stroke. Cardiac magnetic resonance imaging and computed tomography have been tested for their diagnostic value, in particular in patients with cryptogenic stroke, and can be considered as second line methods, providing complementary informat...
Source: Current Neurology and Neuroscience Reports - June 29, 2020 Category: Neuroscience Source Type: research

Impaired implicit learning and feedback processing after stroke
Publication date: 9 February 2016 Source:Neuroscience, Volume 314 Author(s): J.M. Lam, C. Globas, J.A. Hosp, H.-O. Karnath, T. Wächter, A.R. Luft The ability to learn is assumed to support successful recovery and rehabilitation therapy after stroke. Hence, learning impairments may reduce the recovery potential. Here, the hypothesis is tested that stroke survivors have deficits in feedback-driven implicit learning. Stroke survivors (n =30) and healthy age-matched control subjects (n =21) learned a probabilistic classification task with brain activation measured using functional magnetic resonance imaging in a subse...
Source: Neuroscience - December 18, 2015 Category: Neuroscience Source Type: research

Model of minor stroke with mild peri-infarct ischemic injury
Conclusions The modified photothrombotic procedure will produce a minor stroke consisting of a small infarct in a region with marked diffusion and T2 hyperintensities and a peri-infarct region of selective necrosis with modest T2 changes. Minor recurrent stroke is readily produced but imaging is key for assessing size and location of each insult.
Source: Journal of Neuroscience Methods - May 10, 2016 Category: Neuroscience Source Type: research

Alteration and Role of Interhemispheric and Intrahemispheric Connectivity in Motor Network After Stroke.
This study investigated local and global changes in the motor network using longitudinal resting-state functional magnetic resonance imaging (rs-fMRI). Motor impairment was measured in 81 stroke patients using Fugl-Meyer assessment on the same day as rs-fMRI acquisition at both 2 weeks and 3 months post-stroke. The relationships between network measures and motor function scores were assessed. With regard to local connectivity, interhemispheric connectivity was noticeably altered at each time point. Interhemispheric connectivity was also related to residual motor function and improvement in motor function. The anterior i...
Source: Brain Topography - April 18, 2018 Category: Neuroscience Authors: Lee J, Park E, Lee A, Chang WH, Kim DS, Kim YH Tags: Brain Topogr Source Type: research

Task effects on functional connectivity measures after stroke
This study examined working memory, discrete pedaling, continuous pedaling and language tasks. Functional magnetic resonance imaging was used to examine regional and inter-regional brain network function in 14 stroke and 16 control participants. Independent component analysis was used to identify 149 regions of interest (ROI). Using the inter-regional connectivity measurements, the weighted sum was calculated across only regions associated with a given task. Both inter-regional connectivity and regional connectivity were greater during each of the tasks as compared to the resting state. The working memory and discrete peda...
Source: Experimental Brain Research - December 3, 2021 Category: Neuroscience Authors: Kaleb Vinehout Sheila Schindler-Ivens Jeffrey R Binder Brian D Schmit Source Type: research