Functional imaging was performed on a 3T Siemens (Erlangen, Germany) Trio scanner. Forty-five contiguous interleaved slices axial slices of echo planar T2*-weighted images were acquired in each volume with a slice thickness of 3 mm and no gap (repetition time 2730 ms, echo time 30 ms, flip angle 80°, field of view 192 mm2, matrix size 64×64). Slice orientation was tilted −30° from the line connecting the anterior and posterior commissure to alleviate signal drop out in the orbitofrontal cortex (Deichmann et al., 2003). We discarded the first 4 volumes to compensate for T1 saturation effects.
