fMRI Data from Complex Sequential Finger Tapping under Complete Motor and Sensory Blockade of the Right Hand
Description
This dataset includes healthy people fMRI recordings of Complex Sequential Finger Tapping under Complete Motor and Sensory Blockade (Peripheral Nerve Block Anesthesia) of the Right Hand (n=13). 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 Tasks and Recordings Tasks were recorded using a block-design scheme consisting of 3 blocks of activity and rest. Each block lasted for 28 s, resulting in an overall duration of 168 s for each stimulus. The tasks was a repetitive finger-to-thumb opposition movement and imagination- tapping the thumb and each of the remaining four fingers in a 4–2–3–1 sequence- with a stable, self-paced frequency of approximately one tap per second; 1,2,3,4 representing index, middle, ring, and little fingers. 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. The study involved two experimental steps (Pre and Post) Pre (Exp. 1): The first imaging session occurred one day before or at least 3 hours before the operation. Subjects performed two tasks: actual hand movements (execution session) and imagined movements (imagination session) with both hands across two runs. Post (Exp. 2): The second imaging session took place on the day of the operation, after confirming the success of the Peripheral Nerve Block Anesthesia on the right hand. Subjects attempted the task with their blocked right hand and performed it normally with their left hand during the execution session. They then imagined the tasks with both hands during the imagination session. More details described in the article of this data.