Elizabeth Ann Stringer1, Li Min Chen1, Robert M. Friedman2, J Christopher Gatenby1, John C. Gore1
1Institute of Imaging Science, Vanderbilt University, Nashville, TN, United States; 2Psychology, Vanderbilt University, Nashville, TN, United States
Previously we have demonstrated the ability of ultra-high field fMRI to detect topographical organization of digits within areas 1 and 3b of human primary somatosensory cortex. Here we test the feasibility of 7T fMRI to detect functional differences between these neighboring areas. Functional images were acquired using a 7T Philips Achieva scanner while air puffs were delivered to individual distal fingerpads. Magnitude and temporal differences in the BOLD signal were detected between areas 1 and 3b. The data support previous finding that using fMRI at high fields allows the detection of more stimulus selective responses.