fMRI Sensory Representation of Hand and Face - Control Subjects
Description
This dataset includes healthy people fMRI recordings of sensory representation (n=10). Details of the participants are described in the publication of the study. The recordings performed at Akdeniz University Radiology Department, Antalya, Turkey.
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Image acquisition Images were acquired using a 3 T system (Spectra; Siemens, Erlangen, Germany). The MRI scan protocol consisted of T1-weighted anatomical imaging using an MPRAGE (magnetization-prepared rapid gradient echo) sequence, followed by an EPI (Echo Planar Imaging) sequence. Structural images were recorded using the following parameters: repetition time (TR) = 1900 ms, echo time (TE) =2.42 ms, inversion time (TI) = 900 ms, slice thickness (SL) = 1 mm, voxel dimensions = 1x1x1 mm3, 176 sagittal slices, flip angle 9° and acquisition matrix = 94 × 94. Functional images were acquired using the following parameters: TR = 2800 ms, TE = 30 ms, SL = 3 mm, voxel dimensions = 2x2x3.75 mm3, 28 axial slices, flip angle 90° and acquisition matrix = 256 × 256 Stimulus and Recordings Stimuli were given using a block-design scheme consisting of 3 blocks of activity and rest. During activity, a moving stimulus was applied to the subject via a stimulus apparatus (a non-magnetic PVC stick with a cotton cloth attached to one side). Each block lasted for 28 s, resulting in an overall duration of 168 s for each stimulus. Four different stimuli were applied, one to each hand and one to each side of the face. The hand stimulus started at the volar surface of the index finger, ending at the volar surface of the thumb. The face stimulus started in the perioral area, including the upper lip, and ended at the perioral area below the lower lip. During recording, all subjects were in a supine position with arms relaxed and head fixed with adjustable padded restraints on both sides. Subjects were asked to lie still or move as little as possible through the experiment with eyes closed to avoid any artifact caused by the eyes or any movement of the body.