/par
singleFingerRSA

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singleFingerRSA
singleFingerRSA
  •   .bidsignore
  •   CHANGES
  •   dataset_description.json
  •   participants.tsv
  •   README
  •   task_video.mp4
  •   task-cuedSFM_bold.json
  • code
  • sequence_protocol
  • stimuli
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README

Subjects

Participants (n=18) underwent two separate scanning sessions before training (ses-pre) and after training (ses-post) on the experimental task described below. Data was collected from consenting neurotypical subjects with standard inclusion/exclusion criteria (English speaking, right handed, no history of neurological or psychiatric illness) and the protocol was approved by the Carnegie Mellon University Institutional Review Board.

Experimental Task

BOLD data were collected eyes open at rest. Participants were taught to execute specific single finger movements (index, middle, ring, little) that were recorded on a button glove in response to visual stimuli (stimuli/*.png) that were projected onto a screen. Participants learned a mapping of cue to finger press prior to the first imaging session. Task cuedSFM is cued Single Finger Movements. Each stimulus corresponded to one of 4 unique key presses and the mapping was identical across all participants. Participants had 1 second to initiate a unique finger press corresponding to the cue that appeared on the screen. The two fMRI sessions, ses-pre and ses-post, were collected before and after a 25 day training period, where participants either practiced a 32 element sequence (n=9 trained) or pseudorandomly ordered movements (n=9 control) for approximately 30 minutes each day. Group identity for each subject is available in /participants.tsv. Trial types in each of the events.tsv file correspond to individual key presses (2=index, 3=middle, 4=ring, 5=little). Additional details are available in the manuscript: Patrick Beukema, Jörn Diedrichsen, Timothy Verstynen. bioRxiv 255794; doi: https://doi.org/10.1101/255794

Data Acquisition

Data were acquired with a Siemens Verio 3T MRI Scanner and a 32-channel head coil. 6 separate runs for both the ses-pre and ses-post session were acquired. Each run consisted of acquiring 241 functional volumes (~8.03 min) of the same stimuli and key presses but in different orderings. All sequence protocol details for both the functional and anatomical images can be found in /sequence_protocols. Pydeface was used on all anatomical images to ensure de-identification of subjects. The code can be found at https://github.com/poldracklab/pydeface.

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