Magnetic resonance images were collected using a 3T Philips Intera whole-body magnetic resonance scanner (Philips Medical Systems, Best, The Netherlands) equipped with an eight-channel Philips sensitivity-encoded (SENSE) head coil. Structural image acquisition consisted of 180 T1-weighted transversal images (0.75-mm slice thickness). For functional imaging, a total of 1095 volumes were obtained using a SENSE T2*-weighted echo-planar imaging (EPI) sequence with an acceleration factor of 2.0. We acquired 45 axial slices covering the whole brain with a slice thickness of 2.8 mm (interslice gap, 0.8 mm; sequential acquisition; repetition time, 2470 ms; echo time, 30 ms; flip angle, 82°; field of view, 192 mm; matrix size, 68 by 68). To optimize functional sensitivity in the orbitofrontal cortex and medial temporal lobes, we used a tilted acquisition in an oblique orientation at 15° relative to the anterior commissure–posterior commissure line.

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