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The study data for each subject is entered as MRI scans, physiological recordings, or everything else ("metrics") that are recorded as discrete values, such as vitals (BP, HR) and surveys. A key principal is that the data are not grouped at this stage; that comes later in the Project configuration. Thus multiple MRI scans from the same or different sessions are entered as rows. If a survey is repeated, there will be one entry for each measure. Even for a home study with daily questionnaires, each day will show as a different entry.
Projects
This is the group and studies within groups, like patient, control, follow-up (post-intervention), repeats. The data for each subjects are classified here, as say resting state, a task type, an fMRI linked to physiology and so on.
Sets
A combination of studies organizing into groups specific to an analysis.
Preprocessing
Automatic preprocessing and compilation into a "stats" set for statistical analysis, descriptve stats and so on.
Since this is automatic, manual tasks must come before this step - VOI tracing, physiology analysis like peak detection and so on.