Results 1 to 10 of about 50 (50)
European Radiology, 2009 Several different techniques allow a functional assessment of neuronal activations by magnetic resonance imaging (fMRI). The by far most influential fMRI technique is based on a local T2*-sensitive hemodynamic response to neuronal activation, also known as the blood oxygenation level dependent or BOLD effect. Consequently, the term 'fMRI' is often used
Andreas J. Bartsch +3 more
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The Journal of Neuroscience, 2016 Comprehensive analysis of brain function depends on understanding the dynamics of diverse neural signaling processes over large tissue volumes in intact animals and humans. Most existing approaches to measuring brain signaling suffer from limited tissue penetration, poor resolution, or lack of specificity for well-defined neural events. Here we discuss
Barandov, Ali +2 more
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DC Shifts-fMRI: A Supplement to Event-Related fMRI [PDF]
Frontiers in Computational Neuroscience, 2019 Event-related fMRI have been widely used in locating brain regions which respond to specific tasks. However, activities of brain regions which modulate or indirectly participate in the response to a specific task are not event-related. Event-related fMRI can't locate these regulatory regions, detrimental to the integrity of the result that event ...
Qiang Li +6 more
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Magnetic Resonance in Medicine, 2000 Most statistical methods for assessing activated voxels in fMRI experiments are based on correlation or regression analysis. In this context the main assumptions are that the baseline can be described by a few known basis-functions or variables and that the effect of the stimulus, i.e. the activation, stays constant over time. As these assumptions are
Dorothee P. Auer +2 more
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SmartPhantom — an fMRI simulator [PDF]
Magnetic Resonance Imaging, 2006 Many informatics tools have emerged to process the voluminous and complex data generated by functional magnetic resonance imaging (fMRI). The interpretation of fMRI exams is largely determined by these tools. However, their performance is hard to evaluate because there is no independent means of calibration.
Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA ( host institution ) +8 more
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Rest-fMRI—A Potential Substitute for Task-fMRI?
Indian Journal of Radiology and ImagingAbstract Objective The aim of this study was to assess the reliability of resting-state functional magnetic resonance imaging (rest-fMRI) in mapping language areas for preoperative planning, versus standard task-based techniques, which are at times difficult to perform in clinical settings. Our study also aimed to evaluate the overlap between
Santosh S. Gupta +2 more
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fMRI adaptation revisited [PDF]
Cortex, 2016 Adaptation has been widely used in functional magnetic imaging (fMRI) studies to infer neuronal response properties in human cortex. fMRI adaptation has been criticized because of the complex relationship between fMRI adaptation effects and the multiple neuronal effects that could underlie them.
Adam Kohn +2 more
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Encyclopedia, 2020 The human brainstem plays important roles in maintaining basic vital functions. In comparison with brain functional magnetic resonance imaging (fMRI), only a few fMRI studies investigating the brainstem have been reported because of a number of technical challenges.
Pengxu Wei, Zhi Lan, Zeping Lv, Yubo Fan
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Behavior, neuropsychology and fMRI
Progress in Neurobiology, 2016 Cognitive neuroscientists in the late 20th century began the task of identifying the part(s) of the brain concerned with normal behavior as manifest in the psychological capacities as affective powers, reasoning, behaving purposively and the pursuit of goals, following introduction of the 'functional magnetic resonance imaging' (fMRI) method for ...
Bennett, Maxwell +3 more
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