当前位置： SCI文献检索 > NEUROIMAGE期刊下所有文献 > Source stability index: a novel beamforming based localisation metric.

Source stability index: a novel beamforming based localisation metric.

Abstract：

:Many experimental studies into human brain function now use magnetoencephalography (MEG) to non-invasively investigate human neuronal activity. A number of different analysis techniques use the observed magnetic fields outside of the head to estimate the location and strength of the underlying neural generators. One such technique, a spatial filtering method known as Beamforming, produces whole-head volumetric images of activation. Typically, a differential power map throughout the head is generated between a time window containing the response to a stimulus of interest and a window containing background brain activity. A statistical test is normally performed to reveal locations which show a significantly different response in the presence of the stimulus. Despite this being a widely used measure, for both phase-locked and non-phase-locked information, it requires a number of assumptions; namely that the baseline activity defined is stable and also that a change in total power is the most effective way of revealing the neuronal sources required for the task. This paper introduces a metric which evaluates the consistency of the response at each location within a cortical volume. Such a method of localisation negates the need for a baseline period of activity to be defined and also moves away from simply considering the energy content of brain activity. The paper presents both simulated and real data. It demonstrates that this new metric of stability is able to more accurately and, crucially, more reliably draw inferences about neuronal sources of interest.

journal_name

Neuroimage

journal_title

NeuroImage

authors

Hymers M,Prendergast G,Johnson SR,Green GG

doi

10.1016/j.neuroimage.2009.09.055

subject

Has Abstract

pub_date

2010-01-15 00:00:00

pages

1385-97

issue

2

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(09)01050-7

journal_volume

49

pub_type

杂志文章

相关文献

NEUROIMAGE文献大全
  • What can we learn from T2* maps of the cortex?

    abstract：:Studies have shown that T2* contrast can reveal features of cortical anatomy. However, understanding the relationship between T2* contrast and the underlying cyto- and myelo-architecture is not an easy task, given the number of confounds, such as myelin, iron, blood vessels and structure orientation. Moreover, it is d...

    journal_title：NeuroImage

    pub_type： 杂志文章,评审

    doi：10.1016/j.neuroimage.2013.01.023

    authors： Cohen-Adad J

    更新日期：2014-06-01 00:00:00

  • Multivariate analysis of correlation between electrophysiological and hemodynamic responses during cognitive processing.

    abstract：:Animal and human studies have frequently shown that in primary sensory and motor regions the BOLD signal correlates positively with high-frequency and negatively with low-frequency neuronal activity. However, recent evidence suggests that this relationship may also vary across cortical areas. Detailed knowledge of the...

    journal_title：NeuroImage

    pub_type： 杂志文章,随机对照试验

    doi：10.1016/j.neuroimage.2014.01.057

    authors： Kujala J,Sudre G,Vartiainen J,Liljeström M,Mitchell T,Salmelin R

    更新日期：2014-05-15 00:00:00

  • Assessing the neuroendocrine stress response in the functional neuroimaging context.

    abstract：:Neural regulation of stress responses, and the feedback of stress hormones to the brain, reflect complex brain-body interactions that may underlie the effects of psychological stress on health. Elucidating the brain circuitry involved in the cortical control of limbic-hypothalamic-pituitary-adrenal axis, and the corti...

    journal_title：NeuroImage

    pub_type： 杂志文章,评审

    doi：10.1016/j.neuroimage.2009.05.055

    authors： King AP,Liberzon I

    更新日期：2009-09-01 00:00:00

  • Assessment of brain growth in early childhood using deformation-based morphometry.

    abstract：:We present methods for the quantitative analysis of brain growth based on the registration of longitudinal MR image data with the use of Jacobian determinant maps to characterise neuroanatomical changes. The individual anatomies, growth maps and tissue classes are also spatially normalised in an 'average space' and ag...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2007.07.067

    authors： Aljabar P,Bhatia KK,Murgasova M,Hajnal JV,Boardman JP,Srinivasan L,Rutherford MA,Dyet LE,Edwards AD,Rueckert D

    更新日期：2008-01-01 00:00:00

  • Neuroimaging reveals automatic speech coding during perception of written word meaning.

    abstract：:The extent to which visual word perception engages speech codes (i.e., phonological recoding) remains a crucial question in understanding mechanisms of reading. In this study, we used functional magnetic resonance imaging techniques combined with behavioral response measures to examine neural responses to focused vers...

    journal_title：NeuroImage

    pub_type： 临床试验,杂志文章

    doi：

    authors： Xu B,Grafman J,Gaillard WD,Spanaki M,Ishii K,Balsamo L,Makale M,Theodore WH

    更新日期：2002-10-01 00:00:00

  • The influence of brain tumor treatment on pathological delta activity in MEG.

    abstract：:The goal of the MEG study was to investigate the influence of tumor treatment on pathological delta activity (1-4 Hz). The treatment consisted of neurosurgery, and in some of the patients, additional radiotherapy. MEG and MR recordings were made both before and after the treatment in 17 patients. The signal power in t...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2003.07.030

    authors： de Jongh A,Baayen JC,de Munck JC,Heethaar RM,Vandertop WP,Stam CJ

    更新日期：2003-12-01 00:00:00

  • A combined bootstrap/histogram analysis approach for computing a lateralization index from neuroimaging data.

    abstract：:Cerebral hemispheric specialization has traditionally been described using a lateralization index (LI). Such an index, however, shows a very severe threshold dependency and is prone to be influenced by statistical outliers. Reliability of this index thus has been inherently weak, and the assessment of this reliability...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2006.07.010

    authors： Wilke M,Schmithorst VJ

    更新日期：2006-11-01 00:00:00

  • Hippocampus-specific fMRI group activation analysis using the continuous medial representation.

    abstract：:We present a new shape-based approach for regional group activation analysis in fMRI studies. The method restricts anatomical normalization, spatial smoothing and random effects statistical analysis to the space inside and around a structure of interest. Normalization involves finding intersubject correspondences betw...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2007.01.029

    authors： Yushkevich PA,Detre JA,Mechanic-Hamilton D,Fernández-Seara MA,Tang KZ,Hoang A,Korczykowski M,Zhang H,Gee JC

    更新日期：2007-05-01 00:00:00

  • Fast, fully automated global and local magnetic field optimization for fMRI of the human brain.

    abstract：:The aim of this novel technique is to allow researchers, particularly those operating at high static magnetic field strengths on fMRI applications, to tailor the static magnetic field within the brain. The optimum solution for their experimental needs is reached, utilizing the full potential of the active shims at the...

    journal_title：NeuroImage

    pub_type： 临床试验,杂志文章

    doi：

    authors： Wilson JL,Jenkinson M,de Araujo I,Kringelbach ML,Rolls ET,Jezzard P

    更新日期：2002-10-01 00:00:00

  • Covariance PET patterns in early Alzheimer's disease and subjects with cognitive impairment but no dementia: utility in group discrimination and correlations with functional performance.

    abstract：:Although multivariate analytic techniques might identify diagnostic patterns that are not captured by univariate methods, they have rarely been used to study the neural correlates of Alzheimer's disease (AD) or cognitive impairment. Nonquantitative H2(15)O PET scans were acquired during rest in 17 probable AD subjects...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2004.04.032

    authors： Scarmeas N,Habeck CG,Zarahn E,Anderson KE,Park A,Hilton J,Pelton GH,Tabert MH,Honig LS,Moeller JR,Devanand DP,Stern Y

    更新日期：2004-09-01 00:00:00

  • Low-resolution electromagnetic brain tomography (LORETA) of monozygotic twins discordant for chronic fatigue syndrome.

    abstract：BACKGROUND:Previous work using quantified EEG has suggested that brain activity in individuals with chronic fatigue syndrome (CFS) and normal persons differs. Our objective was to investigate if specific frequency band-pass regions and spatial locations are associated with CFS using low-resolution electromagnetic brain...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2006.11.007

    authors： Sherlin L,Budzynski T,Kogan Budzynski H,Congedo M,Fischer ME,Buchwald D

    更新日期：2007-02-15 00:00:00

  • Scanning for the scanner: FMRI of audition by read-out omissions from echo-planar imaging.

    abstract：:Echo-planar imaging (EPI) generates considerable acoustic noise by rapidly oscillating gradients. In functional magnetic resonance imaging (FMRI), unshielded EPI sounds activate the auditory system inasmuch as it is responsive. Instead of attenuating EPI noise, our goal was to utilize it for auditory FMRI by omitting ...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2006.11.026

    authors： Bartsch AJ,Homola G,Thesen S,Sahmer P,Keim R,Beckmann CF,Biller A,Knaus C,Bendszus M

    更新日期：2007-03-01 00:00:00

  • Head motion during MRI acquisition reduces gray matter volume and thickness estimates.

    abstract：:Imaging biomarkers derived from magnetic resonance imaging (MRI) data are used to quantify normal development, disease, and the effects of disease-modifying therapies. However, motion during image acquisition introduces image artifacts that, in turn, affect derived markers. A systematic effect can be problematic since...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2014.12.006

    authors： Reuter M,Tisdall MD,Qureshi A,Buckner RL,van der Kouwe AJW,Fischl B

    更新日期：2015-02-15 00:00:00

  • Language mapping with navigated repetitive TMS: proof of technique and validation.

    abstract：OBJECTIVE:Lesion-based mapping of speech pathways has been possible only during invasive neurosurgical procedures using direct cortical stimulation (DCS). However, navigated transcranial magnetic stimulation (nTMS) may allow for lesion-based interrogation of language pathways noninvasively. Although not lesion-based, m...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2013.05.018

    authors： Tarapore PE,Findlay AM,Honma SM,Mizuiri D,Houde JF,Berger MS,Nagarajan SS

    更新日期：2013-11-15 00:00:00

  • In vivo multi-slice mapping of myelin water content using T2* decay.

    abstract：:Quantitative assessment of the myelin water content in the brain can substantially improve our understanding of white matter diseases such as multiple sclerosis. In this study, in vivo myelin water content was estimated using T(2)* relaxation with multi-slice acquisitions in magnetic resonance imaging (MRI). The main ...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2010.04.023

    authors： Hwang D,Kim DH,Du YP

    更新日期：2010-08-01 00:00:00

  • Investigation of spatial resolution, partial volume effects and smoothing in functional MRI using artificial 3D time series.

    abstract：:This work addresses the balance between temporal signal-to-noise ratio (tSNR) and partial volume effects (PVE) in functional magnetic resonance imaging (fMRI) and investigates the impact of the choice of spatial resolution and smoothing. In fMRI, since physiological time courses are monitored, tSNR is of greater impor...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2008.02.015

    authors： Weibull A,Gustavsson H,Mattsson S,Svensson J

    更新日期：2008-06-01 00:00:00

  • Ageing shows a pattern of cerebellar degeneration analogous, but not equal, to that in patients suffering from cerebellar degenerative disease.

    abstract：:Ageing generally leads to impairments in cognitive function and the ability to execute and learn new movements. While the causes of these impairments are often multi-factorial, integrity of the cerebellum in an elderly population is an important predictive factor of both motor function and cognitive function. A simila...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2015.03.084

    authors： Hulst T,van der Geest JN,Thürling M,Goericke S,Frens MA,Timmann D,Donchin O

    更新日期：2015-08-01 00:00:00

  • Visualizing cortical activation during mental calculation with functional MRI.

    abstract：:Cortical activation during arithmetic calculation (silent subtraction by sevens) was compared to that observed during a control condition for which subjects were required to count forward by ones. Nine normal subjects underwent 1.5-T functional magnetic resonance imaging while performing these tasks. All subjects show...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1006/nimg.1996.0011

    authors： Rueckert L,Lange N,Partiot A,Appollonio I,Litvan I,Le Bihan D,Grafman J

    更新日期：1996-04-01 00:00:00

  • Episodic memory of APOE ε4 carriers is correlated with fractional anisotropy, but not cortical thickness, in the medial temporal lobe.

    abstract：:The ε4 allele of apolipoprotein E (apoE, protein; APOE, gene) is the most important genetic risk factor for the development of Alzheimer's disease (AD). Cortical structures in the medial temporal lobe (MTL) are important for memory function and are affected early in AD. Both gray matter (GM) and white matter (WM) stru...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2012.06.072

    authors： Westlye ET,Hodneland E,Haász J,Espeseth T,Lundervold A,Lundervold AJ

    更新日期：2012-10-15 00:00:00

  • Self-paced frequency of a simple motor task and brain activation. An fMRI study in healthy subjects using an on-line monitor device.

    abstract：:Application of fMRI to clinical neurology implies the selection of a simple task and control of the task performance. The capability to objectively monitor variables related to task execution is, therefore, important and could improve accuracy of clinical fMRI studies. We assessed the influence of different self-paced...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2007.07.045

    authors： Diciotti S,Gavazzi C,Della Nave R,Boni E,Ginestroni A,Paoli L,Cecchi P,De Stefano N,Mascalchi M

    更新日期：2007-11-15 00:00:00

  • Comparing dynamic causal models using AIC, BIC and free energy.

    abstract：:In neuroimaging it is now becoming standard practise to fit multiple models to data and compare them using a model selection criterion. This is especially prevalent in the analysis of brain connectivity. This paper describes a simulation study which compares the relative merits of three model selection criteria (i) Ak...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2011.07.039

    authors： Penny WD

    更新日期：2012-01-02 00:00:00

  • Emotional facial expressions evoke faster orienting responses, but weaker emotional responses at neural and behavioural levels compared to scenes: A simultaneous EEG and facial EMG study.

    abstract：:In the current study, electroencephalography (EEG) was recorded simultaneously with facial electromyography (fEMG) to determine whether emotional faces and emotional scenes are processed differently at the neural level. In addition, it was investigated whether these differences can be observed at the behavioural level...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2015.09.065

    authors： Mavratzakis A,Herbert C,Walla P

    更新日期：2016-01-01 00:00:00

  • Lost in localization? The focus is meta-analysis.

    abstract：:The recent commentary by Derrfuss J, Mar RA. (2009). Lost in localization: the need for a universal coordinate database. Neuroimage, In Press proposed a universal coordinate database to archive functional neuroimaging results. In this response, we discuss our strategy in developing the BrainMap database, which was cre...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2009.06.047

    authors： Laird AR,Lancaster JL,Fox PT

    更新日期：2009-10-15 00:00:00

  • Differential patterns of 2D location versus depth decoding along the visual hierarchy.

    abstract：:Visual information is initially represented as 2D images on the retina, but our brains are able to transform this input to perceive our rich 3D environment. While many studies have explored 2D spatial representations or depth perception in isolation, it remains unknown if or how these processes interact in human visua...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2016.12.039

    authors： Finlayson NJ,Zhang X,Golomb JD

    更新日期：2017-02-15 00:00:00

  • Reflective self-awareness and conscious states: PET evidence for a common midline parietofrontal core.

    abstract：:A recent meta-analysis has shown precuneus, angular gyri, anterior cingulate gyri, and adjacent structures to be highly metabolically active in support of resting consciousness. We hypothesize that these regions constitute a functional network of reflective self-awareness thought to be a core function of consciousness...

    journal_title：NeuroImage

    pub_type： 临床试验,杂志文章

    doi：

    authors： Kjaer TW,Nowak M,Lou HC

    更新日期：2002-10-01 00:00:00

  • Characterizing Inscapes and resting-state in MEG: Effects in typical and atypical development.

    abstract：:Examining the brain at rest is a powerful approach used to understand the intrinsic properties of typical and disordered human brain function, yet task-free paradigms are associated with greater head motion, particularly in young and/or clinical populations such as autism spectrum disorder (ASD) and attention-deficit/...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2020.117524

    authors： Vandewouw MM,Dunkley BT,Lerch JP,Anagnostou E,Taylor MJ

    更新日期：2021-01-15 00:00:00

  • A comparison of publicly available linear MRI stereotaxic registration techniques.

    abstract：INTRODUCTION:Linear registration to a standard space is one of the major steps in processing and analyzing magnetic resonance images (MRIs) of the brain. Here we present an overview of linear stereotaxic MRI registration and compare the performance of 5 publicly available and extensively used linear registration techni...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2018.03.025

    authors： Dadar M,Fonov VS,Collins DL,Alzheimer’s Disease Neuroimaging Initiative.

    更新日期：2018-07-01 00:00:00

  • Identification of large-scale networks in the brain using fMRI.

    abstract：:Cognition is thought to result from interactions within large-scale networks of brain regions. Here, we propose a method to identify these large-scale networks using functional magnetic resonance imaging (fMRI). Regions belonging to such networks are defined as sets of strongly interacting regions, each of which showi...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2005.08.044

    authors： Bellec P,Perlbarg V,Jbabdi S,Pélégrini-Issac M,Anton JL,Doyon J,Benali H

    更新日期：2006-02-15 00:00:00

  • Premature brain aging in humans exposed to maternal nutrient restriction during early gestation.

    abstract：BACKGROUND:Prenatal exposure to undernutrition is widespread in both developing and industrialized countries, causing irreversible damage to the developing brain, resulting in altered brain structure and decreased cognitive function during adulthood. The Dutch famine in 1944/45 was a humanitarian disaster, now enabling...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2017.10.047

    authors： Franke K,Gaser C,Roseboom TJ,Schwab M,de Rooij SR

    更新日期：2018-06-01 00:00:00

  • Distinct striatal regions for planning and executing novel and automated movement sequences.

    abstract：:The basal ganglia-thalamo-cortical circuits are viewed as segregated parallel feed back loops crucially involved in motor control, cognition, and emotional processing. Their role in planning novel, as compared to overlearned movement patterns is as yet not well defined. We tested for the involvement of the associative...

    journal_title：NeuroImage

    pub_type： 杂志文章

    doi：10.1016/j.neuroimage.2008.10.059

    authors： Jankowski J,Scheef L,Hüppe C,Boecker H

    更新日期：2009-02-15 00:00:00