{
  "onset": {
    "Description": "Event onset",
    "Units": "miliseconds"
  },
  "stim_file": {
    "Description": "File of image presented. For button pressing events no info is provided (designated by [])"
  },
  "trial_type": {
    "Description": "Comprenhesive information of stimulus and responses corresponding to each event",
    "Levels": {
      "famous_new": "Initial presentation of famous face",
      "famous_second_early": "Immediate repeated  presentation of famous face",
      "famous_second_late": "Delayed repeated  presentation of famous face",
      "scrambled_new": "Initial presentation of scrambled face",
      "scrambled_second_early": "Immediate repeated  presentation of scrambled face",
      "scrambled_second_late": "Delayed repeated  presentation of scrambled face",
      "unfamiliar_new": "Initial presentation of unfamiliar face",
      "unfamiliar_second_early": "Immediate repeated  presentation of unfamiliar face",
      "unfamiliar_second_late": "Delayed repeated  presentation of unfamiliar face",
      "right_nonsym": "Right button press to indicated less symmetric face",
      "left_sym": "Left button press to indicated more symmetric face",
      "left_nonsym": "Left button press to indicated less symmetric face",
      "right_sym": "Right button press to indicated more symmetric face",
      "boundary": "The boundary mark of each run as the run data was merged",
      "famous": "Famous or fami;iar face",
      "unfamiliar": "Unfamiliar face",
      "scrambled": "Scrambled face"
    }
  },
  "event_type": {
    "Description": "Represent the two more general types events in the experiment",
    "Levels": {
      "button_press": "Button pressing indicating level of symmetry of face presented",
      "faces": "Face image presentation"
    }
  },
  "face_type": {
    "Description": "Type of face presented"
  },
  "value": {
    "Description": "Numerical event marker",
    "Levels": {
      "5": "Initial presentation of famous face",
      "6": "Immediate repeated  presentation of famous face",
      "7": "Delayed repeated  presentation of famous face",
      "13": "Initial presentation of unfamiliar face",
      "14": "Immediate repeated  presentation of unfamiliar face",
      "15": "Delayed repeated  presentation of unfamiliar face",
      "17": "Initial presentation of scrambled face",
      "18": "Immediate repeated  presentation of scrambled face",
      "19": "Delayed repeated  presentation of scrambled face",
      "256": "Left button press",
      "4096": "Right button press"
    }
  },
  "event_order": {
    "Description": "Each image is presented twice. This index represent the order of presentation of each image",
    "Levels": {
      "0": "Not an image. This may be a button press or a boundary",
      "1": "First presentation of the image",
      "2": "Second presentation of the image"
    }
  },
  "trial_dist": {
    "Description": "Distance in trial units since the previous presentation of the same image",
    "Units": "Trials"
  },
  "time_dist": {
    "Description": "Time since the previous presentation of the same image",
    "Units": "seconds"
  }
}