Origins of intersubject variability of blood oxygenation level dependent and arterial spin labeling fMRI: implications for quantification of brain activity
Magnetic Resonance Imaging, 08/01/2012
Clinical Article
Gaxiola–Valdez I et al. – The findings suggest that analyses directly comparing percent change in blood oxygenation level–dependent signal between pre–defined regions of interest using short duration stimuli, as for example in event–related designs, may be heavily weighted by large–vessel responses rather than neuronal responses.
