Magnetom triotim syngo mr b15

A clinical scanner (Siemens Magnetom Trio Tim syngo MR B15), equipped with an EPI-capable gradient system and Siemens-issued 32-channel head coil was used to carry out the experiments. The scanning procedure was equal as recently described (Christova et al., 2013 (link) ) and is repeated here briefly. For fMRI, we used T2*—weighted single shot echo-plantar sequences (TR 2.570 ms; FA 78°; TE 30 ms; matrix = 64 × 64; 40 slices; 3 mm slice thickness; and 0.75 mm slice gap). Scans of the whole brain with 40 slices parallel to the bicomissural plane were obtained. In every run a series of 75 sequential volume images was acquired. In addition, high-resolution anatomical images were acquired for each subject. Thus a 3D magnetization-prepared, rapid acquisition gradient echo was used with the parameters: TR = 2300 ms; TE = 2.91 ms; 160 slices; slice thickness = 1.20 m; in-plane resolution = 1.0 mm × 1.0 mm and FA = 9°.
Ten scans of rest (A) alternated with 10 scans of activation (B) were repeated three times in each run according the scheme: A B A B A B A. During the runs, participants were instructed to stay in relaxed position with hands placed on the abdomen, to keep their eyes closed throughout the experimental procedure and not to lift up the hand during tapping. An auditory cue was given to the subjects for the start and stop of the tapping sequences.