Baseline BOLD correlation predicts individuals' stimulus-evoked BOLD responses
نویسندگان
چکیده
منابع مشابه
Baseline BOLD Correlation Accounts for Inter-Subject Variability in Task-Evoked BOLD Responses
Introduction Spontaneous blood-oxygen-level-dependent (BOLD) fluctuations under the resting brain state have been widely observed and hypothesized to reflect the ongoing activity of the brain. An interesting question about such ongoing activity is if and how (if yes) it would affect task-evoked brain activity [1] which can be studied by fMRI (functional Magnetic Resonance Imaging) BOLD contrast...
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Introduction The blood oxygen level dependent (BOLD) signals acquired at the resting state without any stimulation have been found to fluctuate coherently within many brain networks of many species, which were believed to reflect spontaneous neuronal activities and functional connectivity of the brain. Such coherent spontaneous activity has also been demonstrated to account for trial-to-trial v...
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Functional magnetic resonance imaging (fMRI) was used to investigate the effects of inspired hypoxic, hyperoxic, and hypercapnic gases on baseline and stimulus-evoked changes in blood oxygenation level-dependent (BOLD) signals, cerebral blood flow (CBF), and the cerebral metabolic rate of oxygen (CMRO2) in spontaneously breathing rats under isoflurane anesthesia. Each animal was subjected to a ...
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The interpretation of the blood-oxygenation level-dependent (BOLD) post-stimulus undershoot has been a topic of considerable interest, as the mechanisms behind this prominent BOLD transient may provide valuable clues on the neurovascular response process and energy supply routes of the brain. Biomechanical theories explain the origin of the BOLD undershoot through the passive ballooning of post...
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The negative blood oxygenation level-dependent (BOLD) signal following the cessation of stimulation (post-stimulus BOLD undershoot) is observed in functional magnetic resonance imaging (fMRI) studies. However, its spatial characteristics are unknown. To investigate this, gradient-echo BOLD fMRI in response to visual stimulus was obtained in isoflurane-anesthetized cats at 9.4 T. Since the middl...
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ژورنال
عنوان ژورنال: NeuroImage
سال: 2011
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2010.10.001