Matthew Evan Magnuson1, Wenju Pan1, Waqas Majeed1, Garth Thompson1, Shella Keilholz1
1Biomedical Engineering, Georgia
Institute of Technology /
Low freqnecy fluctuations in resting state BOLD data have often been used to map functional connectivity in the rat brain. These low frequency BOLD fluctuations contain contributions from CBF, CBV, and CMRO2. Each of these components have unique physiological time signatures and effective echo times; therefore, modification of the TR and TE used in resting state scans should result in altered contributions from each BOLD component. In this study we examine the dependence of the selection of the TR and TE variables on low frequency resting state data.