A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2010; you can also visit the original URL.
The file type is application/pdf.
Filters
Within-subject variation in BOLD-fMRI signal changes across repeated measurements: Quantification and implications for sample size
2008
NeuroImage
Preserved Fulltext
Stability was quantified in terms of the within-subject standard deviation (σ w ) of BOLD signal changes across measurements. ...
Here, we report on the stability of fMRI measurements and provide sample size estimations needed for repeated measurement studies. ...
Implications for fMRI studies with repeated measurements Based on the estimates of within-subject variation, we calculated sample sizes for detecting experimental effects in fMRI crossover studies ( Fig ...
doi:10.1016/j.neuroimage.2008.04.183
pmid:18538585
fatcat:qysdvreoazhmznlfpwfk7adyty
Cerebrovascular reactivity measured with arterial spin labeling and blood oxygen level dependent techniques
2015
Magnetic Resonance Imaging
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Both CVR quantifications were derived as the ratio of the fractional cerebral blood flow (CBF) or BOLD signal change over the change in end-tidal CO 2 pressure. ...
Results-The absolute CBF, BOLD and CVR measures were consistent with literature values. CBF derived CVR was 5.11 ± 0.87%/mmHg in gray matter (GM) and 4.64 ± 0.37%/mmHg in parenchyma. ...
Acknowledgments The data for this paper were acquired at the Bernard and Irene Schwartz Center for Biomedical Imaging in the Department of Radiology at NYU School of Medicine. ...
doi:10.1016/j.mri.2015.02.018
pmid:25708263
pmcid:PMC4426232
fatcat:jfey5ak7dfahphmxakhug3yopy
The absolute CBF response to activation is preserved during elevated perfusion: Implications for neurovascular coupling measures
2016
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
A dual-echo pulsed arterial spin labelling (PASL) sequence provided absolute quantification of CBF in baseline and active states as well as relative BOLD signal changes, which were used to estimate CMRO ...
Assuming the evoked neural responses to the visual stimuli are the same for both baseline CBF states, this result has implications for fMRI studies that aim to measure neurovascular coupling using relative ...
This finding has implications for previous studies that have measured regional variations in n (Ances et al., 2008; Chiarelli et al., 2007) , given that baseline CBF has been shown to vary across different ...
doi:10.1016/j.neuroimage.2015.10.023
pmid:26477657
pmcid:PMC4692513
fatcat:sxhnomblajfofhd2vvs45yduu4
Amplitude of fNIRS Resting-State Global Signal Is Related to EEG Vigilance Measures: A Simultaneous fNIRS and EEG Study
2020
Frontiers in Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
EEG vigilance measures and fNIRS global signal amplitudes. ...
Our study for the first time revealed that vigilance as a neurophysiological factor modulates the resting-state dynamics of fNIRS, which have important implications for understanding and processing the ...
Guofa Shou, Johnny O'Keeffe, Josiah Rippetoe, and Junwei Ma for their assistance in the data collection. ...
doi:10.3389/fnins.2020.560878
pmid:33343275
pmcid:PMC7744746
fatcat:sa5eu2ugj5gg5dkdtrh6cydo5y
Presentation of McKiernan et al., eLife, 2016 + open science debate
2018
Figshare
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Presentation for lab meeting of Roshan Cools' lab in Feb 2017, discussing the following paper:McKiernan, E. C., Bourne, P. E., Brown, C. T., Buck, S., Kenall, A., Lin, J., ... Yarkoni, T. (2016). ...
Enganging in open science will boost my career2. Enganging in open science will accelerate my research3. Enganging in open science will improve the quality of my research ...
Specifically, we predict that if PLoS ONE | www.plosone.org 1 November 2010 | Volume 5 | Issue 11 | e13848 Within-subject variation in BOLD-fMRI signal changes across repeated measurements: Quantification ...
doi:10.6084/m9.figshare.5824695.v1
fatcat:wbchsxpghzb3jlebisn4zdfyye
Cerebrovascular Reactivity Measurement Using Magnetic Resonance Imaging: A Systematic Review
2021
Frontiers in Physiology
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
We summarised the acquisition methods, experimental parameters, hardware and CVR quantification approaches used, clinical populations investigated, and corresponding summary CVR measures. ...
MRI allows in vivo measurement of CVR but several different methods have been presented in the literature, differing in pulse sequence, hardware requirements, stimulus and image processing technique. ...
The reported coefficients of variation show that CVR measurements are less repeatable between-than within-days (Kassner et al., 2010; Dengel et al., 2017) and less repeatable in white matter than in ...
doi:10.3389/fphys.2021.643468
pmid:33716793
pmcid:PMC7947694
fatcat:3dtpyu4qavg4jl2ljwvrca5f7e
Noninvasive MRI measurement of the absolute cerebral blood volume-cerebral blood flow relationship during visual stimulation in healthy humans
2013
Magnetic Resonance in Medicine
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Conclusion-Consideration for potential gender related differences, as well as regional variations under a range of physiological states, may reconcile some of the variation across literature and advance ...
In a region of interest (ROI) with stimulus induced activation in CBV and CBF at the P<0.05 significance level, a power function fit resulted in CBV = 2.1 CBF 0.32 across all subjects, CBV = 0.8 CBF 0.51 ...
Acknowledgments This research was partially supported by the NIH under grants NS051622-05, NS052344-05, and EB000473-10. ...
doi:10.1002/mrm.24984
pmid:24151246
pmcid:PMC3994201
fatcat:4wpzc2mjajhzbof43gqo5dr2yu
The effect of isocapnic hyperoxia on neurophysiology as measured with MRI and MEG
2015
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The effect of this 23 change in neural activity on calibrated BOLD using hyperoxia or combined hyperoxia and 24 hypercapnia needs further investigation. 25 26 ...
For more information, please contact eprints@nottingham.ac.uk The effect of isocapnic hyperoxia on neurophysiology as measured with MRI and MEG. ...
,
8 modest sample size in comparison to previous studies. ...
doi:10.1016/j.neuroimage.2014.10.036
pmid:25462687
fatcat:n6dwx32slfcddh5ghaqlnkg4ny
MRI techniques to measure arterial and venous cerebral blood volume
2018
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
is not obtainable from CBVtot, and may provide a more sensitive and specific measure for the underlying physiology. ...
We believe that the continual development of MRI approaches for the measurement of compartment-specific CBV will likely provide essential imaging tools for the advancement and refinement of our knowledge ...
Acknowledgments Grant support from NIH R21 EB023538, R21 MH107016, P41 EB015909; and the Dana Foundation. We thank Laurentius Huber for his insightful comments on the manuscript. ...
doi:10.1016/j.neuroimage.2018.02.027
pmid:29458187
pmcid:PMC6095829
fatcat:2x4il6kxcne6jjet6o5kp33gbu
Functional magnetic resonance imaging measurements of sound-level encoding in the absence of background scanner noise
2001
Journal of the Acoustical Society of America
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Nevertheless, when the data were collapsed across stimulus class, extent and magnitude were significantly correlated with the loudness scale (measured in phons), but not with the intensity scale (measured ...
To achieve control for stimulus bandwidth, we compared 3 schemes for sound-level matching across bandwidth: component level, root mean square power and loudness. ...
D.Hall "fMRI measurements of sound-level encoding" ...
doi:10.1121/1.1345697
pmid:11325127
fatcat:2qusamcgtzawtbmco23vm6zccq
Lag-optimized BOLD cerebrovascular reactivity derived from breathing task data has a stronger relationship with baseline cerebral blood flow
[article]
2022
bioRxiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL.
The file type is application/pdf.
For the relationship between baseline CBF and BOLD-CVR, we assessed both between-subject correlations of average GM values and within-subject spatial correlations across cortical regions. ...
Understanding how baseline vascular physiology relates to dynamic cerebrovascular processes will bring further insights into what drives between and within subject participant variability in BOLD-CVR measurements ...
Furthermore, BOLD-fMRI signal changes are commonly used to infer changes in neural activity, yet resting-state and task-based BOLD-fMRI amplitudes can be strongly influenced by CVR (Chen and Gauthier, ...
doi:10.1101/2022.03.08.483492
fatcat:q4b4ptklejb5pls7jh4ceo5zay
Parallel Functional Reorganizations of Somatosensory Areas 3b and 1, and S2 following Spinal Cord Injury in Squirrel Monkeys
2014
Journal of Neuroscience
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
In addition, the responsiveness of areas 3b and 1, and S2, as measured by the magnitude of the BOLD signal change to tactile stimuli, was reduced markedly at 4 weeks and then recovered to ϳ50% of the prelesion ...
Across animals, the extents of spatial reorganizations and changes in cortical responsiveness and activation sizes in all three areas were correlated with the degree of afferent disruption. ...
BOLD signal time courses were averaged across runs within each session for individual areas in each monkey. ...
doi:10.1523/jneurosci.0537-14.2014
pmid:25009268
pmcid:PMC4087212
fatcat:ajg3ulmeo5gjbge6quwjf2sdha
A metabolomic measure of energy metabolism moderates how an inflammatory miRNA relates to rs-fMRI network and motor control in football athletes
[article]
2020
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Permutation-based mediation and moderation analysis was used to investigate relationships between network fingerprint, changes in omic measures and VR metrics over the season. ...
Change in an energy cycle fatty acid, tridecenedioate, moderated the relationship between 1) miR-505 and DMN fingerprint and 2) the relationship between DMN fingerprint and worsening VR Balance measures ...
For rs-fMRI, a network fingerprint approach was used to compare rs-fMRI measures across the season. ...
arXiv:2006.14930v1
fatcat:dzi6u7u7t5cutca337yb3r6m4e
Dynamic functional connectivity: Promise, issues, and interpretations
2013
NeuroImage
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
contained within the temporal features of spontaneous BOLD FC. ...
The brain must dynamically integrate, coordinate, and respond to internal and external stimuli across multiple time scales. ...
We thank Steve Smith and four anonymous reviewers for helpful suggestions. ...
doi:10.1016/j.neuroimage.2013.05.079
pmid:23707587
pmcid:PMC3807588
fatcat:kaourohiqvcmjkjddm44zd75fe
On the assessment of cerebrovascular reactivity using hypercapnia BOLD MRI
2009
NMR in Biomedicine
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Finally, we show that inter-subject variations in CVR are of physiologic origin and affect the whole brain in a similar fashion. ...
minimizes inter-subject variations. ...
Acknowledgments We are grateful to Helen Wood, Rong Zhang, and Emma Rose for assistance with the CO 2 apparatus setup. ...
doi:10.1002/nbm.1392
pmid:19388006
pmcid:PMC2726998
fatcat:i2rizarbfvc3te7fkcqaqih2sa
« Previous
Showing results 1 — 15 out of 1,191 results