scholarly journals Regional variations in vascular density correlate with resting-state and task-evoked blood oxygen level-dependent signal amplitude

2013 ◽  
Vol 35 (5) ◽  
pp. 1906-1920 ◽  
Author(s):  
Nicolas Vigneau-Roy ◽  
Michaël Bernier ◽  
Maxime Descoteaux ◽  
Kevin Whittingstall
Keyword(s):  
Resting State ◽  
Signal Amplitude ◽  
Blood Oxygen Level Dependent ◽  
Vascular Density ◽  
Blood Oxygen ◽  
Oxygen Level ◽  
Blood Oxygen Level ◽  
Regional Variations ◽  
Dependent Signal ◽  
And Task

scholarly journals Evaluating Cognitive Relationships with Resting-State and Task-driven Blood Oxygen Level-Dependent Variability

2021 ◽  
Vol 33 (2) ◽  
pp. 279-302
Author(s):  
Peter R. Millar ◽  
Beau M. Ances ◽  
Brian A. Gordon ◽  
Tammie L. S. Benzinger ◽  
John C. Morris ◽  
...  
Keyword(s):  
Task Performance ◽  
Resting State ◽  
Attentional Control ◽  
Blood Oxygen Level Dependent ◽  
Blood Oxygen ◽  
Bold Signal ◽  
Oxygen Level ◽  
Blood Oxygen Level ◽  
Age Related ◽  
And Task

Recent functional magnetic resonance imaging studies have reported that moment-to-moment variability in the blood oxygen level-dependent (BOLD) signal is positively associated with task performance and, thus, may reflect a behaviorally sensitive signal. However, it is not clear whether estimates of resting-state and task-driven BOLD variability are differentially related to cognition, as they may be driven by distinct sources of variance in the BOLD signal. Moreover, other studies have suggested that age differences in resting-state BOLD variability may be particularly sensitive to individual differences in cardiovascular, rather than neural, factors. In this study, we tested relationships between measures of behavioral task performance and BOLD variability during both resting-state and task-driven runs of a Stroop and an animacy judgment task in a large, well-characterized sample of cognitively normal middle-aged to older adults. Resting-state BOLD variability was related to composite measures of global cognition and attentional control, but these relationships were eliminated after correction for age or cardiovascular estimates. In contrast, task-driven BOLD variability was related to attentional control measured both inside and outside the scanner, and importantly, these relationships persisted after correction for age and cardiovascular measures. Overall, these results suggest that BOLD variability is a behaviorally sensitive signal. However, resting-state and task-driven estimates of BOLD variability may differ in the degree to which they are sensitive to age-related, cardiovascular, and neural mechanisms.

scholarly journals Aberrant blood-oxygen-level-dependent signal oscillations across frequency bands characterize the alcoholic brain

2017 ◽  
Vol 23 (2) ◽  
pp. 824-835 ◽  
Author(s):  
Jui-Yang Hong ◽  
Eva M. Müller-Oehring ◽  
Adolf Pfefferbaum ◽  
Edith V. Sullivan ◽  
Dongjin Kwon ◽  
...  
Keyword(s):  
Blood Oxygen Level Dependent ◽  
Blood Oxygen ◽  
Oxygen Level ◽  
Blood Oxygen Level ◽  
Frequency Bands ◽  
Dependent Signal

scholarly journals Blood oxygen level-dependent signal responses in corticolimbic ‘emotions’ circuitry of lactating rats facing intruder threat to pups

2009 ◽  
Vol 30 (5) ◽  
pp. 934-945 ◽  
Author(s):  
Benjamin C. Nephew ◽  
Martha K. Caffrey ◽  
Ada C. Felix-Ortiz ◽  
Craig F. Ferris ◽  
Marcelo Febo
Keyword(s):  
Blood Oxygen Level Dependent ◽  
Blood Oxygen ◽  
Oxygen Level ◽  
Blood Oxygen Level ◽  
Dependent Signal
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