Integrated strategy for improving functional connectivity mapping using multiecho fMRI
Citations
871 citations
Cites background or methods from "Integrated strategy for improving f..."
...In another study (Kundu et al., 2013), data were acquired at 4 TEs (12, 28, 44, and 60 ms) in order to partition the data into ICA components whose signal reflects artifactual S0 changes (such as those caused by motion) versus relaxation rate changes (such as those caused by neural activity or changes in pCO2), building on the MEICA methods outlined in Kundu et al....
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...…development of denoising techniques) are themulti-echo approaches,which improve identification of non-BOLD signals (e.g. (Bright and Murphy, 2013; Kundu et al., 2013)), and task fMRI, where an evoked signal of interest should be better isolated by better denoising (e.g., (Christodoulou et al.,…...
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...…is not yet clear, since methods to counteract motion artifact are still being developed and validated (Bright and Murphy, 2013; Jo et al., 2013; Kundu et al., 2013; Muschelli et al., 2014; Patel et al., 2014; Power et al., 2014; Satterthwaite et al., 2013a; Scheinost et al., 2014; Yan et al.,…...
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...The full impact of motion artifact on functional connectivity studies of development, aging, and disease is not yet clear, since methods to counteract motion artifact are still being developed and validated (Bright and Murphy, 2013; Jo et al., 2013; Kundu et al., 2013; Muschelli et al., 2014; Patel et al., 2014; Power et al., 2014; Satterthwaite et al., 2013a; Scheinost et al., 2014; Yan et al., 2013a,b; Zeng et al., 2014)....
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...(Bright and Murphy, 2013; Kundu et al., 2013)), and task fMRI, where an evoked signal of interest should be better isolated by better denoising (e....
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Cites methods from "Integrated strategy for improving f..."
...Similar to other ICA-based methods, the final step of ME-ICA is to regress out from the data those ICs that are classified as noise (Kundu et al., 2012; 2013; Olafsson et al., 2015)....
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References
10,002 citations
8,766 citations
"Integrated strategy for improving f..." refers background in this paper
...Functional connectivity between brain regions is then typically estimated by the correlation between time series (1)....
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...become distorted after global signal regression Brain Connectivity 2(1):25–32....
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8,231 citations
"Integrated strategy for improving f..." refers background in this paper
...Because these components are, by construction, independent, this means that the BOLD degrees of freedom for inference are known and can be used to appropriately normalize correlation values (12, 13)....
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6,411 citations
"Integrated strategy for improving f..." refers background or methods in this paper
...Peltier SJ, Noll DC (2002) T(2)(*) dependence of low frequency functional connectivity....
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...Finally, it has been suggested that in extreme cases, time points that are severely contaminated by otherwise intractable movement effects may be simply deleted or “scrubbed” from the time series (2)....
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...Delta variation signal (DVARS), computed as the root mean square (RMS) average of the first derivatives of all fMRI signals, identified time points with rapidly changing fMRI signal (2)....
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2,647 citations
"Integrated strategy for improving f..." refers background in this paper
...This normalization also controls for variability in BOLD degrees of freedom due to varying BOLD sensitivity with subject motion (14)....
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