tRNS fMRI Experiment

Each .txt file contains data of 1 subject for all training sessions (n=4) sequentially. In this file each column indicates the information it is referred to. 

Column1 ‘Block’: indicates block number. There are 5 blocks per day, so that 1:5 blocks refer to the first training session, 6:10 blocks refer to the second training session, 11:15 refer to the third training session and 16:20 refer to the fourth training session.

Column 2 ‘Trial’: indicated the number of trials (48 per block, total of 240 trials per session), so that each row represents one trial. 

Column 3 ‘TrialType’: indicate the task the subject was asked to perform for that given trial. ‘Orientation’ refers to Orientation Discrimination Task, while ‘TemporalOrder’ refers to temporal orientation judgment task.

Colum 4 ‘TOJLevel’:  indicates whether the temporal feature of the stimuli was at individual threshold (Hard) or whether was above threshold (Easy), this last one corresponds to a catch trial for the temporal order judgment task. 

Colum 5 ‘TOJSide’: indicates whether the temporal feature was presented first on the Right or Left of the fixation cross. 

Column 6 ‘OrientLevel’: indicates whether the orientation feature of the stimulus was at individual threshold (Hard) or above threshold (Easy), this last one corresponds to catch trials for Orientation discrimination task. 

Column 7 ‘OrientSide’: indicates whether the orientation feature (tilted Gabor) was presented on the left or the right of fixation.

Column 8 ‘Resp’: indicates the response given by the subject. ‘Diff’ indicates that the subject judged the two stimuli as different for the temporal or orientation feature (depending on the Trial Type, Colum3), while ‘Same’ indicates that the subject judged the two stimuli as equal for the temporal or orientation feature (depending on the Trial Type, Column3).

Column 9 ‘ISI’: indicates  the interstimulus interval for that trial (2 or 4 seconds)

Column 10 ‘ACC’: indicates whether the given response by the subject was correct (‘Correct’) or incorrect (‘Incorrect’).

Column 11‘AccNum’: indicates numerically whether the given response by the subject was correct (1) or incorrect (0).