BOLD Signal
Nonlinear Analysis of the BOLD Signal
... Against this background, the Buxton-Friston (B-F) he- modynamic model has been developed as a comprehensive biophysical model of hemodynamic modulation. It combines the coupling mechanism of manifold physiological ...
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Correcting the Variations of BOLD Signal Due to Susceptibility Gradients and Its Application
... dependence signal (BOLD) for functional magnetic resonance imaging (FMRI), is the use of blood magnetization depending on the oxygenation state of ...and BOLD sensitiv- ity change. FMRI can be used ...
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Long-latency reductions in gamma power predict hemodynamic changes that underlie the negative BOLD signal
... negative BOLD response remain to be ...BOLD signal. These findings suggest a close relationship between BOLD responses and neural events that operate over time scales that outlast the ...
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<p>The low-frequency BOLD signal oscillation response in the insular associated to immediate analgesia of ankle acupuncture in patients with chronic low back pain</p>
... The present study demonstrated the low-frequency BOLD signal oscillation response in the left insular in brain activity was associated with an immediate analgesia of AA in patients wi[r] ...
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Erratum: Nomi et al., “Moment-to-Moment BOLD Signal Variability Reflects Regional Changes in Neural Flexibility across the Lifespan”
... New text to be inserted between the first and second paragraphs of the Results section on page 5542: Within-subject voxelwise whole-brain group average correlations between z -score norm[r] ...
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Assembly and use of new task rules in fronto parietal cortex
... In Analysis 2, we examined transient (trial-related) and sustained ( block-related) activity during task perfor- mance. Trial-related activity was modeled with an eight- boxcar FIR basis set (Visscher et al., 2003) for ...
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The Blood Oxygen Level–Dependent Functional MR Imaging Signal Can Be Used to Identify Brain Tumors and Distinguish Them from Normal Tissue
... intrinsic BOLD signal ...the BOLD signals from the tumors were not affected by the performance of the motor ...tumor signal intensity was always significantly different from that seen in the ...
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Localizing the Language Network with fMRI and Functional Connectivity: Implications for Pre Surgical Planning
... present BOLD signal activation maps and related functional connectivity, in response to three commonly administered fMRI language ...bilateral BOLD signal increases in anterior and posterior ...
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Recruitment of lateral rostral prefrontal cortex in spontaneous and task related thoughts
... (BOLD) signal during rest compared to the arrows task in the left middle frontal gyrus (BA10/46), right inferior parietal lobe (BA40), as well other posterior and temporal ...
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Response of neural reward regions to food cues in autism spectrum disorders
... (BOLD) signal in response to the food images Results: We found very similar patterns of increased BOLD signal to these images in the two groups; both groups showed increased BOLD ...
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Evidence that the negative BOLD response is neuronal in origin: a simultaneous EEG–BOLD–CBF study in humans
... ing BOLD fMRI allows the integration of brain activity measurements from neuronal and haemodynamic sources, and has been used to inves- tigate correlations between the amplitude of neuronal responses ...EEG- ...
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Relationship between Caffeine Induced Changes in Resting Cerebral Perfusion and Blood Oxygenation Level Dependent Signal
... increase BOLD signal inten- sity if the compound does not also block the receptors that are responsible for the vascular component of BOLD signal ...stimulus-induced BOLD signal ...
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Heroin addiction engages negative emotional learning brain circuits in rats
... We found that conditioned heroin withdrawal motivated heroin intake and engaged brain regions that are associated with negative emotional learning, particularly extrahypothalamic and hypothalamic stress/arousal ...
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Computational and Neural Mechanisms Underlying Decision Making in Humans
... To find brain regions implementing the accumulation of evidence in a binary choice task, the time course of accumulator value predicted by a sequential sampling model could be directly correlated against BOLD ...
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Altered blood oxygen level-dependent signal variability in chronic post-traumatic stress disorder during symptom provocation
... whether BOLD signal variability was altered in chronic PTSD patients during symptom ...between BOLD signal variability and PTSD symptom ...show BOLD signal variability changes in ...
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Physiological and pathological brain activation in the anesthetized rat produces hemodynamic-dependent cortical temperature increases that can confound the BOLD fMRI signal
... interpreting BOLD signals in preclinical models where temperature increases during gas challenges and functional activation are likely to have a confounding ...the BOLD signal, will require tight ...
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Physiological and pathological brain activation in the anesthetized rat produces hemodynamic-dependent cortical temperature increases that can confound the BOLD fMRI signal
... interpreting BOLD signals in preclinical models where temperature increases during gas challenges and functional activation are likely to have a confounding ...the BOLD signal, will require tight ...
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Task-related fMRI BOLD response to hyperinsulinemia in healthy older adults
... Healthy older adults aged 55–85, fluent in English, deemed medically safe to undergo MRI procedures, with at least 12 years of formal education, were recruited to participate in a randomized, single-blinded, ...
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Neurodevelopmental Outcomes of Infantile Hydrocephalus: An fMRI Case Study
... The objective of this study is to investigate the long-term neurodevelopmental outcomes of shunted patients with treated infantile hydrocephalus. We will examine the behavioural outcomes of these patients and determine ...
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Heme arginate improves reperfusion patterns after ischemia: a randomized, placebo controlled trial in healthy male subjects
... peak BOLD signal after ischemic preconditioning four hours prior to 20 minutes of ...peak BOLD signal after ischemic precondi- ...better signal-to-noise ratio but showed a slightly ...
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