Abstract：
:This paper introduces two kernel-based regression schemes to decode or predict brain states from functional brain scans as part of the Pittsburgh Brain Activity Interpretation Competition (PBAIC) 2007, in which our team was awarded first place. Our procedure involved image realignment, spatial smoothing, detrending of low-frequency drifts, and application of multivariate linear and non-linear kernel regression methods: namely kernel ridge regression (KRR) and relevance vector regression (RVR). RVR is based on a Bayesian framework, which automatically determines a sparse solution through maximization of marginal likelihood. KRR is the dual-form formulation of ridge regression, which solves regression problems with high dimensional data in a computationally efficient way. Feature selection based on prior knowledge about human brain function was also used. Post-processing by constrained deconvolution and re-convolution was used to furnish the prediction. This paper also contains a detailed description of how prior knowledge was used to fine tune predictions of specific "feature ratings," which we believe is one of the key factors in our prediction accuracy. The impact of pre-processing was also evaluated, demonstrating that different pre-processing may lead to significantly different accuracies. Although the original work was aimed at the PBAIC, many techniques described in this paper can be generally applied to any fMRI decoding works to increase the prediction accuracy.
journal_name
Neuroimagejournal_title
NeuroImageauthors
Chu C,Ni Y,Tan G,Saunders CJ,Ashburner Jdoi
10.1016/j.neuroimage.2010.03.058subject
Has Abstractpub_date
2011-05-15 00:00:00pages
662-73issue
2eissn
1053-8119issn
1095-9572pii
S1053-8119(10)00345-9journal_volume
56pub_type
杂志文章相关文献
NEUROIMAGE文献大全abstract：:Cancer and cancer treatment-related neurocognitive dysfunction (CRND) (e.g., impairments in key cognitive domains of attention, memory, processing speed, and executive function), commonly referred to as "chemobrain" or "chemo-fog", can negatively impact patients' psychosocial functioning and quality of life. CRND is a...
journal_title：NeuroImage
pub_type： 杂志文章,评审
doi：10.1016/j.neuroimage.2013.06.075
更新日期：2014-01-15 00:00:00
abstract：:Neuroimaging studies typically focus on either resting state or task-based fMRI data. Prior research has shown that similarity in functional connectivity between rest and cognitive tasks, interpreted as reconfiguration efficiency, is related to task performance and IQ. Here, we extend this approach from adults to chil...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.116301
更新日期：2020-01-15 00:00:00
abstract：:Spinal cord fMRI is a useful tool for studying spinal mechanisms of pain, hence for analgesic drug development. Its technical feasibility in both humans and rats has been demonstrated. This study investigates the reproducibility, robustness, and spatial accuracy of fMRI of lumbar spinal cord activation due to transcut...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2007.11.010
更新日期：2008-03-01 00:00:00
abstract：:The large amount of imaging data collected in several ongoing multi-center studies requires automated methods to delineate brain structures of interest. We have previously reported on using artificial neural networks (ANN) to define subcortical brain structures. Here we present several automated segmentation methods u...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2007.05.063
更新日期：2008-01-01 00:00:00
abstract：:Reduced cognitive control is considered a core feature of bipolar disorder (BD). Abnormalities in ventrolateral prefrontal cortex (VLPFC) and other functionally linked regions that underpin cognitive control during the Stroop Colour Word Task (SCWT) have been reported in patients with BD and their relatives. In this f...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.04.055
更新日期：2011-07-15 00:00:00
abstract：:Various neuroimaging measures are being evaluated for tracking Alzheimer's disease (AD) progression in therapeutic trials, including measures of structural brain change based on repeated scanning of patients with magnetic resonance imaging (MRI). Methods to compute brain change must be robust to scan quality. Biases m...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.10.086
更新日期：2013-02-01 00:00:00
abstract：:Chemical exchange between water and labile protons from amino-acids, proteins and other molecules can be exploited to provide tissue contrast with magnetic resonance imaging (MRI) techniques. Using an off-resonance Spin-Locking (SL) scheme for signal preparation is advantageous because the image contrast can be tuned ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.08.014
更新日期：2012-01-16 00:00:00
abstract：:A new method is presented to map the orientation of intravoxel crossing fibers by using the phase of the diffusion circular spectrum harmonics. In a previous study [Zhan, W., Gu, H., Xu, S., Silbersweig, D.A., Stern, E., Yang, Y., 2003. Circular spectrum mapping for intravoxel fiber structures based on high angular re...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2004.07.062
更新日期：2004-12-01 00:00:00
abstract：:Identification of spatiotemporal interactions within/between neuron populations is critical for detection and characterization of large-scale neuronal interactions underlying perception, cognition, and behavior. Univariate analysis has been employed successfully in many neuroimaging studies. However, univariate analys...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/S1053-8119(03)00333-1
更新日期：2003-10-01 00:00:00
abstract：:This study investigates how visual cortical networks align with context-sensitivity, namely the relative focus on the object versus the background of a visual scene, in early childhood. Context-sensitivity was assessed by a picture description and a recognition memory task. To segregate object and background processin...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.08.008
更新日期：2017-12-01 00:00:00
abstract：:Moving from group level to individual level functional parcellation maps is a critical step for developing a rich understanding of the links between individual variation in functional network architecture and cognitive and clinical phenotypes. Still, the identification of functional units in the brain based on intrins...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.07.029
更新日期：2018-04-15 00:00:00
abstract：:Subtle changes in white matter (WM) microstructure have been associated with normal aging and neurodegeneration. To study these associations in more detail, it is highly important that the WM tracts can be accurately and reproducibly characterized from brain diffusion MRI. In addition, to enable analysis of WM tracts ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2020.116993
更新日期：2020-09-01 00:00:00
abstract：:We sought to determine the feasibility of directly studying neural tissue activity by analysis of differential phase shifts in MRI signals that occurred when trickle currents were applied to a bath containing active or resting neural tissue. We developed a finite element bidomain model of an aplysia abdominal ganglion...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.04.005
更新日期：2010-08-01 00:00:00
abstract：:Recently, a related morphometry-based connection concept has been introduced using local mean cortical thickness and volume to study the underlying complex architecture of the brain networks. In this article, the surface area is employed as a morphometric descriptor to study the concurrent changes between brain struct...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.01.028
更新日期：2010-05-01 00:00:00
abstract：:Current resting-state network analysis often looks for coherent spontaneous BOLD signal fluctuations at frequencies below 0.1 Hz in a multiple-minutes scan. However hemodynamic signal variation can occur at a faster rate, causing changes in functional connectivity at a smaller time scale. In this study we proposed to ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.10.015
更新日期：2013-01-15 00:00:00
abstract：:The question of the self has intrigued philosophers and psychologists for a long time. More recently, distinct concepts of self have also been suggested in neuroscience. However, the exact relationship between these concepts and neural processing across different brain regions remains unclear. This article reviews neu...
journal_title：NeuroImage
pub_type： 杂志文章,meta分析
doi：10.1016/j.neuroimage.2005.12.002
更新日期：2006-05-15 00:00:00
abstract：:One of the core pathological features of Alzheimer's disease (AD) is the accumulation of amyloid plaques in the brain. Current efforts of medical imaging research aim at visualizing amyloid plaques in living patients in order to evaluate the progression of the pathology, but also to facilitate the diagnosis of AD at t...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.03.029
更新日期：2012-07-16 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：:The neural bases of the different processes involved in task switching remain poorly identified. Whether distinct brain regions are involved according to the overall structure of the task sequence and the predictability of task timing during task switching is unknown. To address this question, we used functional magne...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.2002.1169
更新日期：2002-09-01 00:00:00
abstract：:A major limitation to structural and functional MRI (fMRI) scans is their susceptibility to head motion artifacts. Even submillimeter movements can systematically distort functional connectivity, morphometric, and diffusion imaging results. In patient care, sedation is often used to minimize head motion, but it incurs...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2018.01.023
更新日期：2018-05-01 00:00:00
abstract：:Diffusion measurements in the human central nervous system are complex to characterize and a broad spectrum of methods have been proposed. In this study, a comprehensive diffusion encoding and analysis approach, hybrid diffusion imaging (HYDI), is described. The HYDI encoding scheme is composed of multiple concentric ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2007.02.050
更新日期：2007-07-01 00:00:00
abstract：:In the social neuroscience of face processing, multiple roles are attributed to amygdala: signalling of fear/threat-stimuli, of emotional expression, and general salience. The current study aimed at a direct comparison of amygdala activation attributable to these conditions by contrasting amygdala responses to matched...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.11.024
更新日期：2011-02-14 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：:Neural oscillations can synchronize to external rhythmic stimuli, as for example in speech and music. While previous studies have mainly focused on elucidating the fundamental concept of neural entrainment, less is known about the time course of entrainment. In this human electroencephalography (EEG) study, we unravel...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.11.037
更新日期：2018-02-15 00:00:00
abstract：:Analyzing cortical sulci is important for studying cortical morphology and brain functions. Although sulcal lines on cortical surfaces can be defined in various ways, it is critical in a neuroimaging study to define a sulcal line along the valley of a cortical surface with a high curvature within a sulcus. To extract ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2009.08.013
更新日期：2010-01-01 00:00:00
abstract：:Pathophysiological changes in neurological and neuropsychiatric diseases are increasingly described in terms of abnormal network connectivity. However, the anatomical integrity and efficacy of connections among multiple brain regions change with aging, even in healthy adults. We combined low-frequency transcranial mag...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2006.03.061
更新日期：2006-08-15 00:00:00
abstract：:Vocal expressions commonly elicit activity in superior temporal and inferior frontal cortices, indicating a distributed network to decode vocally expressed emotions. We examined the involvement of this fronto-temporal network for the decoding of angry voices during attention towards (explicit attention) or away from e...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.06.015
更新日期：2012-09-01 00:00:00
abstract：:Modeling and analysis of MR images of the developing human brain is a challenge due to rapid changes in brain morphology and morphometry. We present an approach to the construction of a spatiotemporal atlas of the fetal brain with temporal models of MR intensity, tissue probability and shape changes. This spatiotempor...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.06.054
更新日期：2010-11-01 00:00:00
abstract：:In 2001, we published a paper on the representation of faces and objects in ventral temporal cortex that introduced a new method for fMRI analysis, which subsequently came to be called multivariate pattern analysis (MVPA). MVPA now refers to a diverse set of methods that analyze neural responses as patterns of activit...
journal_title：NeuroImage
pub_type： 历史文章,杂志文章,评审
doi：10.1016/j.neuroimage.2012.03.016
更新日期：2012-08-15 00:00:00
abstract：:Learning with discriminative methods is generally based on minimizing the misclassification of training samples, which may be unsuitable for imbalanced datasets where the recognition might be biased in favor of the most numerous class. This problem can be addressed with a generative approach, which typically requires ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.05.011
更新日期：2011-08-01 00:00:00
