If your recording contains keystroke markers, a JSON file will also be exported. This JSON file contains the descriptions of the keystroke markers used and their corresponding values in the EDF and CSV files.
A Baseline JSON file is created when baseline recording is enabled. The baseline markers and their corresponding values are:
Eyes Opened Start : 1
Eyes Opened End: 2
Eyes Closed Start: 3
Eyes Closed End: 4
In case of EPOC Flex, a separate JSON file is created that outputs the mapping for channel names and sensor positions for the selected session. For e.g.: