Readme for Pedersen, Endestad & Biele. Evidence Accumulation and Choice Maintenance are Dissociated in Human Perceptual Decision Making Structure of data: The data include behavioral results and fMRI-data for three runs for each subject. Data from subject 21 and 33 are not included (see methods of article), and subject 35 only performed two runs (one RT and one DR). Run 1 and 2 are in RT-condition, while run 3 is in DR-condition (except for subject 35, for which there is no run2-folder) fMRI-data: - folder structure: - all fMRI data are in zipped-nifti format (*.nii.gz) * each participant has its own participant folder (S1 - S23) * each participant folder contains one folder for each run of the fMRI experiment * each run-folder contains (a) the functional data func_data.nii.gz (b) a folder with registration-information * the folder with registration information contains all relevant files to perform a linear registration from EIP space to structural space and a combined linear + non-linear registration from the individuals structural space to MNI standard space * to use the folder for registration of a new fMRI analysis, copy the contents of this folder into the *.feat/reg folder * when performing a second level analysis, fsl will take the relevant files from this folder and automatically register the statistical image in EPI space to standard space * please refer to the FSL web pages for details about the registration process (http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/) Behavioral data: Explanation of column names: sbj: subject number trial: trial number response: response on category (1 = face, 2 = house) accuracy: 0 = incorrect, 1 = correct category: correct category of stimulus (1 = face, 2 = house) coherence: indicates proportion coherence in stimulus (lower values indicate more noise) condition: 1 = DR, 2 = RT rt: response time in ms (included delay in DR-condition) stim_onset: stimulus onset from start of scan in ms iti: inter-trial interval prior to stimulus presentation