Abstract:
:Post-stroke impairment is associated not only with structural lesions, but also with dysfunction in surviving perilesional tissue. Previous studies using equivalent current dipole source localization of MEG/EEG signals have demonstrated a preponderance of slow-wave activity localized to perilesional areas. Recent studies have also demonstrated the utility of nonlinear analyses such as multiscale entropy (MSE) for quantifying neuronal dysfunction in a wide range of pathologies. The current study utilized beamformer-based reconstruction of signals in source space to compare spectral and nonlinear measures of electrical activity in perilesional and healthy cortices. Data were collected from chronic stroke patients and healthy controls, both young and elderly. We assessed relative power in the delta (1-4 Hz), theta (4-7 Hz), alpha (8-12 Hz) and beta (15-30 Hz) frequency bands, and also measured the nonlinear complexity of electrical activity using MSE. Perilesional tissue exhibited a general slowing of the power spectrum (increased delta/theta, decreased beta) as well as a reduction in MSE. All measures tested were similarly sensitive to changes in the posterior perilesional regions, but anterior perilesional dysfunction was detected better by MSE and beta power. The findings also suggest that MSE is specifically sensitive to electrophysiological dysfunction in perilesional tissue, while spectral measures were additionally affected by an increase in rolandic beta power with advanced age. Furthermore, perilesional electrophysiological abnormalities in the left hemisphere were correlated with the degree of language task-induced activation in the right hemisphere. Finally, we demonstrate that single subject spectral and nonlinear analyses can identify dysfunctional perilesional regions within individual patients that may be ideal targets for interventions with noninvasive brain stimulation.
journal_name
Neuroimage Clinjournal_title
NeuroImage. Clinicalauthors
Chu RK,Braun AR,Meltzer JAdoi
10.1016/j.nicl.2015.03.019subject
Has Abstractpub_date
2015-04-08 00:00:00pages
157-69issn
2213-1582pii
S2213-1582(15)00062-5journal_volume
8pub_type
杂志文章abstract::Borderline personality disorder (BPD) is associated with symptoms such as affect dysregulation, impaired sense of self, and self-harm behaviors. Neuroimaging research on BPD has revealed structural and functional abnormalities in specific brain regions and connections. However, little is known about the topological or...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2016.02.006
更新日期:2016-02-18 00:00:00
abstract:BACKGROUND:The history of immune suppression, especially CD4 nadir, has been shown to be a strong predictor of HIV-associated neurocognitive disorders (HAND). However, the potential mechanism of this association is not well understood. METHODS:High resolution structural MRI images and neuropsychological data were obta...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.102155
更新日期:2020-01-01 00:00:00
abstract::Neuropsychological assessment, brain imaging and computational modelling have augmented our understanding of the multifaceted functional deficits in people with language disorders after stroke. Despite the volume of research using each technique, no studies have attempted to assimilate all three approaches in order to...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2018.03.031
更新日期:2018-03-27 00:00:00
abstract::There is increasing interest in developing a reliable, affordable and accessible disease biomarker of Parkinson's disease (PD) to facilitate disease modifying PD-trials. Imaging biomarkers using magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI) can describe parameters such as fractional anisotropy (F...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2013.10.006
更新日期:2013-10-14 00:00:00
abstract::In the post combination antiretroviral therapy (cART) era, the prevalence of mild forms of HIV-associated neurocognitive disorders (HAND) in individuals with HIV-infection remains high. There is a pressing need to find biomarkers that can aid clinical assessment of HAND, especially in those with mild or no neurocognit...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2014.12.003
更新日期:2014-12-13 00:00:00
abstract:INTRODUCTION:Despite the recognized importance of atrophy in multiple sclerosis (MS), methods for its quantification have been mostly restricted to the research domain. Recently, a CE labelled and FDA approved MS-specific atrophy quantification method, MSmetrix, has become commercially available. Here we perform a vali...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2017.06.034
更新日期:2017-06-30 00:00:00
abstract::Malformations of cortical development are found at higher rates in autism spectrum disorder (ASD) than in healthy controls on postmortem neuropathological evaluation but are more variably observed on visual review of in-vivo MRI brain scans. This may be due to the visually elusive nature of many malformations on MRI. ...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2015.10.017
更新日期:2015-10-31 00:00:00
abstract::Frontotemporal dementia (FTD) is difficult to diagnose, due to its heterogeneous nature and overlap in symptoms with primary psychiatric disorders. Brain MRI for atrophy is a key biomarker but lacks sensitivity in the early stage. Morphometric MRI-based measures and machine learning techniques are a promising tool to ...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2018.08.028
更新日期:2018-01-01 00:00:00
abstract::Methamphetamine use disorder is associated with a high likelihood of relapse. Identifying robust predictors of relapse that have explanatory power is critical to develop secondary prevention based on a mechanistic understanding of relapse. Computational approaches have the potential to identify such predictive markers...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.101794
更新日期:2019-01-01 00:00:00
abstract::Cerebral small vessel disease, including white matter hyperintensities (WMH) and lacunes of presumed vascular origin, is common in elderly people and is related to cognitive impairment and dementia. One possible mechanism could be the disruption of white matter tracts (both within WMH and normal-appearing white matter...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2015.02.003
更新日期:2015-02-16 00:00:00
abstract::Brain age prediction based on machine learning has been applied to various neurological diseases to discover its clinical values. By this innovative approach, it has been reported that the patients with refractory epilepsy had premature brain aging. Of refractory epilepsy, right and left subtypes of mesial temporal lo...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.102033
更新日期:2019-01-01 00:00:00
abstract::Post-traumatic stress disorder (PTSD) is a leading cause of sustained impairment, distress, and poor quality of life in military personnel, veterans, and civilians. Indirect functional neuroimaging studies using PET or fMRI with fear-related stimuli support a PTSD neurocircuitry model that includes amygdala, hippocamp...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2014.08.004
更新日期:2014-08-07 00:00:00
abstract::Abnormal spontaneous and evoked oscillations have been reported in several studies of patients with psychotic disorders. Resting alpha power and peak alpha frequency may be decreased in patients with psychosis. We used high-density EEG (hd-EEG) to record resting-state data and steady-state visual evoked potentials (SS...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.101693
更新日期:2019-01-01 00:00:00
abstract::Previous studies have demonstrated that migraine is associated with enhanced perception and altered cerebral processing of sensory stimuli. More recently, it has been suggested that this sensory hypersensitivity might reflect a more general enhanced response to aversive emotional stimuli. Using functional magnetic res...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.101790
更新日期:2019-01-01 00:00:00
abstract::Slowed information processing speed is commonly reported in persons with multiple sclerosis (MS), and is typically investigated using clinical neuropsychological tests, which provide sensitive indices of mean-level information processing speed. However, recent studies have demonstrated that within-person variability o...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2013.06.012
更新日期:2013-06-28 00:00:00
abstract:OBJECTIVE:To investigate, based on a putative abnormal neural processing of disgusting signals in Prader Willi syndrome (PWS) patients, the brain response to visual representations of disgusting food in PWS using functional MRI (fMRI). METHODS:Twenty-one genetically-confirmed PWS patients, 30 age- and sex-matched and ...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.101662
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Cognitive impairment is a common consequence of stroke, and the rewiring of the surviving brain circuits might contribute to cognitive recovery. Studies investigating how the functional connectivity of networks change across time and whether their remapping relates to cognitive recovery in stroke...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2020.102538
更新日期:2020-12-17 00:00:00
abstract::Callous-unemotional traits are characterized by a lack of empathy, a disregard for others' feelings and shallow or deficient affect, such as a lack of remorse or guilt. Neuroanatomical correlates of callous-unemotional traits have been demonstrated in clinical samples (i.e., adolescents with disruptive behavior disord...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章,多中心研究
doi:10.1016/j.nicl.2017.12.015
更新日期:2017-12-09 00:00:00
abstract::Understanding abnormal resting-state functional connectivity of distributed brain networks may aid in probing and targeting mechanisms involved in major depressive disorder (MDD). To date, few studies have used resting state functional magnetic resonance imaging (rs-fMRI) to attempt to discriminate individuals with MD...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2016.02.018
更新日期:2016-03-02 00:00:00
abstract:PURPOSE:To develop a statistical method of combining multimodal MRI (mMRI) of adult glial brain tumours to generate tissue heterogeneity maps that indicate tumour grade and infiltration margins. MATERIALS AND METHODS:We performed a retrospective analysis of mMRI from patients with histological diagnosis of glioma (n =...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2018.101648
更新日期:2019-01-01 00:00:00
abstract::Electrical source imaging (ESI) aims at reconstructing the electrical brain activity from scalp EEG. When applied to interictal epileptiform discharges (IEDs), this technique is of great use for identifying the irritative zone in focal epilepsies. Inaccuracies in the modeling of electro-magnetic field propagation in t...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2014.06.005
更新日期:2014-06-16 00:00:00
abstract::While gray matter (GM) anomalies have been reported for attention-deficit/hyperactivity disorder (ADHD), investigating their associations with cognitive deficits and individual symptom domains can help pinpoint the neural underpinnings critical for the pathology of ADHD, particularly the persist form of ADHD. In this ...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2018.04.035
更新日期:2018-05-02 00:00:00
abstract:OBJECTIVES:The medial temporal lobe atrophy (MTA) and the posterior atrophy (PA) scales allow to assess the degree hippocampal and parietal atrophy from magnetic resonance imaging (MRI) scans. Despite reliable, easy and widespread employment, appropriate normative values are still missing. We aim to provide norms for t...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.101936
更新日期:2019-01-01 00:00:00
abstract::The accurate identification of glioblastoma progression remains an unmet clinical need. The aim of this prospective single-institutional study is to determine and validate thresholds for the main metabolite concentrations obtained by MR spectroscopy (MRS) and the values of the apparent diffusion coefficient (ADC) to e...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2016.02.016
更新日期:2016-02-26 00:00:00
abstract::Perceptional abnormalities in schizophrenia are associated with hallucinations and delusions, but also with negative symptoms and poor functional outcome. Perception can be studied using EEG-derived event related potentials (ERPs). Because of their excellent temporal resolution, ERPs have been used to ask when percept...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2016.08.009
更新日期:2016-08-10 00:00:00
abstract::Adults with attention-deficit/hyperactivity disorder (ADHD) often display executive function impairments, particularly in inhibitory control. The antisaccade task, which measures inhibitory control, requires one to suppress an automatic prosaccade toward a salient visual stimulus and voluntarily make an antisaccade in...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2012.10.006
更新日期:2012-11-02 00:00:00
abstract:BACKGROUND:Violence that leads to homicide results in an extreme financial and emotional burden on society. Juveniles who commit homicide are often tried in adult court and typically spend the majority of their lives in prison. Despite the enormous costs associated with homicidal behavior, there have been no serious ne...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2014.05.002
更新日期:2014-05-10 00:00:00
abstract::Several studies in cancer research have suggested that cognitive dysfunction following chemotherapy, referred to in lay terms as "chemobrain", is a serious problem. At present, the changes in integrative brain function that underlie such dysfunction remain poorly understood. Recent developments in neuroimaging suggest...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2019.101654
更新日期:2019-01-01 00:00:00
abstract:Background:Behavioral, cognitive and functional particularities in autism differ according to autism subgroups and might be associated with domain-specific cognitive strengths. It is unknown whether structural changes support this specialization. We investigated the link between cortical folding, its maturation and cog...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2018.04.036
更新日期:2018-08-04 00:00:00
abstract::In this retrospective cross-sectional study we compared 123I‑N‑ω‑fluoropropyl‑2β‑carbomethoxy‑3β‑(4‑iodophenyl)nortropane (123I-FP-CIT) binding to the striatal dopamine and the extrastriatal serotonin transporter (DAT and SERT, respectively) between Parkinson's disease (PD) and dementia with Lewy bodies (DLB) to gain ...
journal_title:NeuroImage. Clinical
pub_type: 杂志文章
doi:10.1016/j.nicl.2018.04.009
更新日期:2018-04-06 00:00:00