Abstract:
:There is increasing interest in the potential of whole-brain computational models to provide mechanistic insights into resting-state brain networks. It is therefore important to determine the degree to which computational models reproduce the topological features of empirical functional brain networks. We used empirical connectivity data derived from diffusion spectrum and resting-state functional magnetic resonance imaging data from healthy individuals. Empirical and simulated functional networks, constrained by structural connectivity, were defined based on 66 brain anatomical regions (nodes). Simulated functional data were generated using the Kuramoto model in which each anatomical region acts as a phase oscillator. Network topology was studied using graph theory in the empirical and simulated data. The difference (relative error) between graph theory measures derived from empirical and simulated data was then estimated. We found that simulated data can be used with confidence to model graph measures of global network organization at different dynamic states and highlight the sensitive dependence of the solutions obtained in simulated data on the specified connection densities. This study provides a method for the quantitative evaluation and external validation of graph theory metrics derived from simulated data that can be used to inform future study designs.
journal_name
Neuroimagejournal_title
NeuroImageauthors
Lee WH,Bullmore E,Frangou Sdoi
10.1016/j.neuroimage.2016.08.050subject
Has Abstractpub_date
2017-02-01 00:00:00pages
724-733eissn
1053-8119issn
1095-9572pii
S1053-8119(16)30435-9journal_volume
146pub_type
杂志文章相关文献
NEUROIMAGE文献大全abstract::Functional lateralization is a feature of human brain function, most apparent in the typical left-hemisphere specialization for language. A number of anatomical and imaging studies have examined whether structural asymmetries underlie this functional lateralization. We combined functional MRI (fMRI) and diffusion-weig...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2006.03.011
更新日期:2006-08-01 00:00:00
abstract::White matter thalamo-cortical fibers allow the communication of distant brain regions by carrying neuronal signals. Mapping non-invasively the information flow within white matter fibers is regarded so far as impossible. We investigated here whether information flow propagating along thalamo-cortical fibers can be det...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2012.01.054
更新日期:2012-04-02 00:00:00
abstract::We present a multi-scale generative model for EEG, that entails a minimum number of assumptions about evoked brain responses, namely: (1) bioelectric activity is generated by a set of distributed sources, (2) the dynamics of these sources can be modelled as random fluctuations about a small number of mesostates, (3) m...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2007.06.034
更新日期:2007-10-15 00:00:00
abstract::Despite the immense ongoing efforts to map brain functional connections and organizations with resting-state functional MRI (rsfMRI), the mechanisms governing the temporally coherent rsfMRI signals remain unclear. In particular, there is a lack of direct evidence regarding the morphological foundation and plasticity o...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2013.08.037
更新日期:2014-01-01 00:00:00
abstract::Functional near-infrared spectroscopy (fNIRS) is a non-invasive brain imaging method that uses light to record regional changes in cerebral blood flow in the cortex during activation. fNIRS uses portable wearable sensors to allow measurements of brain activation during tasking. In this study, fNIRS was used to investi...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2013.02.010
更新日期:2013-07-01 00:00:00
abstract::Combining electroencephalogram (EEG) recording and functional magnetic resonance imaging (fMRI) offers the potential for imaging brain activity with high spatial and temporal resolution. This potential remains limited by the significant ballistocardiogram (BCG) artifacts induced in the EEG by cardiac pulsation-related...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2015.06.088
更新日期:2016-03-01 00:00:00
abstract::Structural brain differences in relation to expertise have been demonstrated in a number of domains including visual perception, spatial navigation, complex motor skills and musical ability. However no studies have assessed the structural differences associated with representational skills in visual art. As training a...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2014.03.062
更新日期:2014-08-01 00:00:00
abstract::A number of previous studies have interpreted differences in brain activation between arithmetic operation types (e.g. addition and multiplication) as evidence in favor of distinct cortical representations, processes or neural systems. It is still not clear how differences in general task complexity contribute to thes...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2014.01.061
更新日期:2014-05-15 00:00:00
abstract::While part of the left ventral occipito-temporal cortex (left-vOT), known as the Visual Word Form Area, plays a central role in reading, the area also responds to speech. This cross-modal activation has been explained by three competing hypotheses. Firstly, speech is converted to orthographic representations that acti...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2018.11.014
更新日期:2019-02-01 00:00:00
abstract::Language function in the right-hemispheric homologues of Broca's and Wernicke's areas does not only correlate with left-handedness or pathology, but occurs naturally in right-handed healthy subjects as well. In the current study, two non-invasive methods of assessing language lateralization are correlated with behavio...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2009.10.041
更新日期:2010-02-15 00:00:00
abstract::The present study examined intrahemispheric functional connectivity during rest and dichotic listening in 8 male and 9 female healthy young adults measured with magnetoencephalography (MEG). Generalized synchronization within the separate hemispheres was estimated by means of the synchronization likelihood that is sen...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2005.09.015
更新日期:2006-03-01 00:00:00
abstract::Insights into memory retrieval processes can be obtained by examining graded recall success, specifically, tip-of-the-tongue (TOT) and feeling-of-knowing (FOK) states. TOT is defined as a recall failure accompanied by a strong feeling of imminent retrieval, and FOK as a recall failure accompanied by a feeling of futur...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2004.10.024
更新日期:2005-02-15 00:00:00
abstract::Multivariate pattern analysis can be used to decode the orientation of a viewed grating from fMRI signals in early visual areas. Although some studies have reported identifying multiple sources of the orientation information that make decoding possible, a recent study argued that orientation decoding is only possible ...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2015.11.066
更新日期:2016-02-15 00:00:00
abstract::Action is a cover term used to refer to a large set of motor processes differing in domain specificities (e.g. execution or observation). Here we review neuroimaging evidence on action processing (N = 416; Subjects = 5912) using quantitative Activation Likelihood Estimation (ALE) and Meta-Analytic Connectivity Modelin...
journal_title:NeuroImage
pub_type: 杂志文章,meta分析
doi:10.1016/j.neuroimage.2019.116321
更新日期:2020-02-01 00:00:00
abstract::A key challenge for cognitive neuroscience is deciphering the representational schemes of the brain. Stimulus-feature-based encoding models are becoming increasingly popular for inferring the dimensions of neural representational spaces from stimulus-feature spaces. We argue that such inferences are not always valid b...
journal_title:NeuroImage
pub_type: 杂志文章,评审
doi:10.1016/j.neuroimage.2018.03.041
更新日期:2018-07-01 00:00:00
abstract::Functional localizers are routinely used in neuroimaging studies to test hypotheses about the function of specific brain areas. The specific tasks and stimuli used to localize particular regions vary widely from study to study even when the same cortical region is targeted. Thus, it is important to ask whether task an...
journal_title:NeuroImage
pub_type: 杂志文章,评审
doi:10.1016/j.neuroimage.2009.12.024
更新日期:2010-03-01 00:00:00
abstract::Structural neuroimaging has been used to correlate lesional patterns with the cognitive profile of patients with multiple sclerosis (MS), especially for "frontal" dysfunction. However, a clear-cut anatomical explanation has yet to be found for the long-term memory deficit which is a hallmark of MS cognitive impairment...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1006/nimg.1996.0032
更新日期:1996-10-01 00:00:00
abstract::Motion artifacts are a significant source of noise in many functional near-infrared spectroscopy (fNIRS) experiments. Despite this, there is no well-established method for their removal. Instead, functional trials of fNIRS data containing a motion artifact are often rejected completely. However, in most experimental c...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2013.04.082
更新日期:2014-01-15 00:00:00
abstract::Transient intrinsic optical responses associated with neural activation offer an attractive strategy for dynamic imaging of neural activity, and may provide a noninvasive methodology for imaging of retinal function. Here we demonstrate the feasibility of near infrared imaging of fast intrinsic optical changes in isola...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2006.06.060
更新日期:2006-11-15 00:00:00
abstract::A voluntary head motion suppression method using feedback to subjects of their own head motion information is demonstrated. A real-time fMRI system was developed on standard MR imaging hardware for this purpose. The head motion information was simplified as a four-way arrow display that changed color from green to red...
journal_title:NeuroImage
pub_type: 临床试验,杂志文章
doi:10.1016/j.neuroimage.2005.02.050
更新日期:2005-08-01 00:00:00
abstract::The dynamic embodiment of psychological processes is evident in the association of health outcomes, behavioural traits and psychological functioning with Heart Rate Variability (HRV). The dominant high-frequency component of HRV is an index of the central neural control of heart rhythm, mediated via the parasympatheti...
journal_title:NeuroImage
pub_type: 杂志文章,评审
doi:10.1016/j.neuroimage.2019.116072
更新日期:2019-11-15 00:00:00
abstract::Spontaneous fluctuations in the blood oxygenation level-dependent (BOLD) signal, as measured by functional magnetic resonance imaging (fMRI) at rest, exhibit a temporally coherent activity thought to reflect functionally relevant networks. Antero-mesial temporal structures are the site of early pathological changes in...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2011.05.090
更新日期:2011-09-15 00:00:00
abstract::Connectivity is fundamental for understanding the nature of brain function. The intricate web of synaptic connections among neurons is critically important for shaping neural responses, representing statistical features of the sensory environment, coordinating distributed resources for brain-wide processing, and retai...
journal_title:NeuroImage
pub_type: 杂志文章,评审
doi:10.1016/j.neuroimage.2011.08.085
更新日期:2012-08-15 00:00:00
abstract::The main objective of this work was to study the functional markers of the clinical response to cholecystokinin tetrapeptide (CCK-4). Twelve healthy male subjects were challenged with CCK-4 and simultaneously underwent functional magnetic resonance imaging (fMRI) recording. Since anticipatory anxiety (AA) is an intrin...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2006.01.035
更新日期:2006-07-01 00:00:00
abstract::The optimum parameters for single-shot gradient-recalled (GR) EPI-based fMRI studies of the limbic region are systematically established at 3 T via their ability to mitigate intravoxel dephasing-measured via SNR and T2* in the amygdalae-and their implications for temporal resolution (or brain coverage). Conventional i...
journal_title:NeuroImage
pub_type: 临床试验,杂志文章
doi:10.1016/j.neuroimage.2003.12.048
更新日期:2004-05-01 00:00:00
abstract::Forepaw somatosensory stimulation induces neural activities in relay thalamic nuclei, the primary somatosensory cortex of forelimb (S1FL), and the secondary somatosensory cortex (S2). However, rodent fMRI studies of somatosensory stimulation have commonly reported BOLD changes only in S1FL, which may be due to side ef...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2019.03.063
更新日期:2019-07-15 00:00:00
abstract::Context exerts a powerful effect on cognitive performance and is clearly important for language processing, where lexical, sentential, and narrative contexts should differentially engage neural systems that support lexical, compositional, and discourse level semantics. Equally important, but thus far unexplored, is th...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2004.12.013
更新日期:2005-04-15 00:00:00
abstract::Application of magnetic or electrical stimulation to the motor cortex can result in a period of electromyography (EMG) silence in a tonically active peripheral muscle. This period of EMG silence is referred to as the silent period (SP). The duration of SP shows intersubject variability and reflects the integrity of co...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2013.06.059
更新日期:2013-12-01 00:00:00
abstract::Non-invasive imaging has the potential to play a crucial role in the characterization and translation of experimental animal models to investigate human brain development and disorders, especially when employed to study animal models that more accurately represent features of human neuroanatomy. The purpose of this st...
journal_title:NeuroImage
pub_type: 杂志文章
doi:10.1016/j.neuroimage.2017.03.009
更新日期:2017-05-15 00:00:00
abstract::Somatosensory stimulation (SS), leading to increases in motor cortical excitability, influences motor performance in patients with brain lesions like stroke. The mechanisms by which SS modulates motor function are incompletely understood. Here, we used functional magnetic resonance imaging (fMRI, blood-oxygenation-lev...
journal_title:NeuroImage
pub_type: 临床试验,杂志文章
doi:10.1016/j.neuroimage.2005.05.055
更新日期:2005-10-01 00:00:00