Wen-Ju Pan1, Matthew Magnuson1, Garth Thompson1, Shella Keilholz1
1Biomedical Engineering, Emory University/Georgia Institute of Technology, Atlanta, GA, United States
The power density distribution in BOLD fluctuations of intrinsic brain activity may be a potential index of neural excitability. The present study examined resting state activity in an animal model and demonstrated a spatially-varying BOLD power distribution across brain regions under light anesthesia. Variations were observed across cortical areas, but much larger differences were present between cortical and subcortical regions.