Fig. 5
Matlab data fields structure. Nested structure elements containing the values and features of recordings from the study. According to the patient identifier, the upper level is the main structure, which can be PN1 = 11,13,15 or 16. In the next level, VN2 indicates the total number of visits available for that patient, and inside it, DN3 indicates the number of days that the visit lasted. Inside each day, there are structures for the Training and Feedback sessions and the spelling sessions (containing recordings from both the Copy and Free speller sessions). Each of these contains a set of structures that result from exporting the *.vhdr raw files for each recorded session, times the number of that particular session type (i.e., n1, n2, and n3) was performed during the day. Read the Data Records section for details on the data exporting.
