I am doing my first fMRI analysis and I am currently very close to having converted my dataset into BIDS. When running the BIDS validator, I only get the following warning:
*Warning 1: [Code 82] CUSTOM_COLUMN_WITHOUT_DESCRIPTION. Reason: Tabular file contains custom columns not described in a data dictionary. Evidence: ID, Age, Gender, trial, choice, response, rt, choice_order,run,task, sub not defined, please define in /events.json
For each subject, I have 3 event files. 1 event file for each run (there are 3 runs). It seems that i have to define the columns in some json file. However, I am unsure if I have to define this information in an existing .json file or whether I have to create a new .json file - and if so, where that new json file should be created.
Can anyone help?