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Title: Establishing Relations between BOLD Variability, Age, and
Cognitive Performance Authors: Garrett, Douglas Advisor: Grady,
Cheryl L. Department: Psychology Keywords: Brain variability
Issue Date: 6-Dec-2012 Abstract: Neuroscientists have long known
that brain function is inherently variable. Functional magnetic
resonance imaging (fMRI) research often attributes blood oxygen
level-dependent (BOLD) signal variance to measurement-related
confounds. However, what is typically considered “noise”
variance in data may be a vital feature of brain function that
reflects development, cognitive adaptability, flexibility, and
performance. In the present thesis, we examine how brain signal
variability (measured with a modified BOLD time series standard
deviation (SDBOLD)) relates to