Imaging was performed on a 3T Siemens (Erlangen, Germany) Trio MRI scanner equipped with a 12-channel head coil. A total of 32 slices 4 mm thick (in plane resolution 3.4 mm × 3.4 mm) were acquired using a T2* sensitive echoplanar imaging sequence (TR = 2000 milliseconds, TE = 30 milliseconds, flip angle = 77°). The resting state scan was acquired first and consisted of one run lasting 5 minutes 24 seconds. Before completing resting state scans, participants were told to lie in the scanner with eyes closed while thinking of nothing in particular. An MP-RAGE T1-weighted scan was also acquired for coregistration purposes (TR = 2300 milliseconds, TE = 2.82 milliseconds, flip angle = 10 degrees, series = interleaved). Participants were familiarized with the scanning procedure using an MRI simulator prior to the actual MRI scan.
