Allen T. Newton1, Jascha D. Swisher2,
John C. Gore1,3
1Radiology &
Radiological Sciences, Vanderbilt Universithy, Nashville, TN, United States; 2Department
of Psychology, Vanderbilt Universithy, Nashville, TN, United States; 3Biomedical
Engineering, Vanderbilt Universithy, Nashville, TN, United States
Ultrahigh fields (7T) have traditionally been used in fMRI to improve spatial resolution and sensitivity to activation. Here, we demonstrate the potential for these systems to instead image with extremely high temporal resolution, while maintaining significant BOLD contrast, nearly full brain coverage and spatial resolutions common to lower field strengths. We then present an example of how sequences like this can be used to image cognitive latencies between distant brain regions in a simple reaction time task.