{
  "onset": {
    "Description": "Event onset",
    "Units": "second"
  },
  "duration": {
    "Description": "Event duration",
    "Units": "second"
  },
  "trial_type": {
    "Description": "Type of event (different from EEGLAB convention)",
    "Levels": {
      "stimulus": "Onset of first question",
      "response": "Response to question 1, 2 or 3"
    }
  },
  "response_time": {
    "Description": "Response time column not use for this data"
  },
  "sample": {
    "Description": "Event sample starting at 0 (Matlab convention starting at 1)"
  },
  "value": {
    "Description": "Value of event (numerical)",
    "Levels": {
      "2": "Response 1 (this may be a response to question 1, 2 or 3)",
      "4": "Response 2 (this may be a response to question 1, 2 or 3)",
      "8": "Response 3 (this may be a response to question 1, 2 or 3)",
      "16": "Indicate involuntary response",
      "128": "First question onset (most important marker)"
    }
  }
}