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59
Unsupervised robust non-parametric estimation of the hemodynamic response function for any fMRI experiment
- IEEE Trans. Medical Imaging
, 2003
"... © 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other w ..."
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Cited by 29 (6 self)
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recent works have used a nonparametric framework for this estimation, considering each brain region as a system characterized by its impulse response, the so-called hemodynamic response function (HRF). However, the use of these techniques has remained limited since they are not well-adapted to real fMRI
Unsupervised robust non-parametric estimation of the hemodynamic response function for any fMRI experiment
, 2003
"... ..."
Robust estimation of the hemodynamic response function in asynchronous multitasks multisessions event-related fMRI paradigms
, 2002
"... Hemodynamic Response Function (HRF) estimation in noisy functiomal Magnetic Resonance Imaging (fMRD is essential for a better understanding of cerebral activations. Previous works have proposed robust non-parametric estimates of the HRF within a regularized framework [1, 2]. They are not adapted for ..."
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Cited by 2 (1 self)
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Hemodynamic Response Function (HRF) estimation in noisy functiomal Magnetic Resonance Imaging (fMRD is essential for a better understanding of cerebral activations. Previous works have proposed robust non-parametric estimates of the HRF within a regularized framework [1, 2]. They are not adapted
Modeling the hemodynamic response function in fMRI: efficiency, bias and mis-modeling. Neuroimage
, 2009
"... Most brain research to date have focused on studying the amplitude of evoked fMRI responses, though there has recently been an increased interest in measuring onset, peak latency and duration of the responses as well. A number of modeling procedures provide measures of the latency and duration of f ..."
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Cited by 34 (4 self)
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these models, the results bear on the interpretation of hemodynamic response estimates across a wide variety of psychological and neuroscientific studies. © 2008 Elsevier Inc. All rights reserved. Introduction Functional magnetic resonance imaging (fMRI) is based on studying the vascular response in the brain
� Human Brain Mapping 19:1–17(2003) � Robust Bayesian Estimation of the Hemodynamic Response Function in Event- Related BOLD fMRI Using Basic Physiological Information
"... Abstract: In BOLD fMRI data analysis, robust and accurate estimation of the Hemodynamic Response Function (HRF) is still under investigation. Parametric methods assume the shape of the HRF to be known and constant throughout the brain, whereas non-parametric methods mostly rely on artificially incre ..."
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Abstract: In BOLD fMRI data analysis, robust and accurate estimation of the Hemodynamic Response Function (HRF) is still under investigation. Parametric methods assume the shape of the HRF to be known and constant throughout the brain, whereas non-parametric methods mostly rely on artificially
A critical role for the right fronto-insular cortex in switching between central-executive and default-mode networks.
- Proc Natl Acad Sci USA
, 2008
"... Cognitively demanding tasks that evoke activation in the brain's central-executive network (CEN) have been consistently shown to evoke decreased activation (deactivation) in the default-mode network (DMN). The neural mechanisms underlying this switch between activation and deactivation of larg ..."
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Cited by 178 (1 self)
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of large-scale brain networks remain completely unknown. Here, we use functional magnetic resonance imaging (fMRI) to investigate the mechanisms underlying switching of brain networks in three different experiments. We first examined this switching process in an auditory event segmentation task. We
Analysis of Event-related Response in Human Visual Cortex with fMRI
"... noninvasive imaging technique that measures the hemodynamic response related to neural activity in the human brain. Event-related functional magnetic resonance imaging (efMRI) is a form of functional Magnetic Resonance Imaging (fMRI) in which a series of fMRI images are time-locked to a stimulus pre ..."
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noninvasive imaging technique that measures the hemodynamic response related to neural activity in the human brain. Event-related functional magnetic resonance imaging (efMRI) is a form of functional Magnetic Resonance Imaging (fMRI) in which a series of fMRI images are time-locked to a stimulus
Modeling the hemodynamic response in single-trial functional MRI experiments. Magnetic Resonance in Medicine
, 1999
"... Today, most studies of cognitive processes using functional MRI (fMRI) experiments adopt a single-trial design. Highly flexible stimulation paradigms require new statistical models in which not only the activation amount but also the time course of the measured hemodynamic response is analyzed. Most ..."
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Cited by 6 (1 self)
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Today, most studies of cognitive processes using functional MRI (fMRI) experiments adopt a single-trial design. Highly flexible stimulation paradigms require new statistical models in which not only the activation amount but also the time course of the measured hemodynamic response is analyzed
Effectiveness of the Finite Impulse Response Model in Content-Based fMRI Image Retrieval
, 2007
"... The thresholded t-map produced by the General Linear Model (GLM) gives an effective summary of activation patterns in functional brain images and is widely used for feature selection in fMRI related classification tasks. As part of a project to build content-based retrieval systems for fMRI images ..."
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Cited by 1 (1 self)
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images, we have investigated ways to make GLM more adaptive and more robust in dealing with fMRI data from widely differing experiments. In this paper we report on exploration of the Finite Impulse Response model, combined with multiple linear regression, to identify the “locally best Hemodynamic
Sentence Comprehension of Two Languages : an fMRI Study with Korean-English Bilinguals
"... Abstract Concerning the neural mechanism of bilingual sentence comprehension, the issue of whether the processing of L1 and L2 are identical or not, is currently a subject of debate. In the present study, we investigated the neural mechanisms of L1 (Korean) and L2 (English) using functional magneti ..."
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' two languages were represented in distinct or overlapping areas of the brain, we performed functional magnetic resonance imaging (fMRI). Methods Twelve right-handed Korean-English bilingual students were scanned during sentence comprehension tasks of both Korean and English. Two types of the tasks
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