Fig. 3.
Left: Graphic of a partially expanded top-level HED schema tree (see https://www.hedtags.org/display_hed.html for a view of the complete schema in an easy-to-search expanding format). Right: A table with basic annotations of the five main W-H event marker types using HED. The left column of the table has user-defined terms used for convenience to refer to these event markers in the BIDS event files. The right column shows the underlying mapping of these terms to the common HED vocabulary.