{
    "leading_hand": {
        "Levels": {
            "right": "r",
            "left": "l"
        }
    },
    "reading_finger": {
        "Description": "List of fingers used by participand for daily Braille reading, if any"
    },
    "blind":{
        "Levels": {
            "blind": "1",
            "sighted": "0"
        }
    },
    "blindness_age": {
        "Description": "Age of complete vision loss"
    },
    "order": {
        "Description": "Index of the record in the experiment. Failed sessions that have not made it into the dataset are counted."
    },
    "reading_time": {
        "Description": "Time of reading Braille text of standard informed consent",
        "Units": "Seconds"
    },
    "braille_display_user": {
        "Levels":{
            "The subject uses Braille display in daily life": "1",
            "The subject does not use Braille display in daily life": "0"
        }
    },
    "daily_braille_time": {
        "Description": "Self-reported daily Braille usage",
        "Units": "Hours"

    },
    "age": {
        "Description": "User's age",
        "Units": "Years"
    },
    "misuc": {
        "Levels":{
            "Musical experience (except vocal)": "1",
            "No musical experience": "0"
        }
    },
    "remaining_vision": {
        "Levels":{
            "Residual vision": "1",
            "No residual vision": "0"
        }
    },
    "sex": {
        "Levels":{
            "male": "male",
            "female": "female"
        }
    },
    "blind_years": {
        "Description": "years passed from total vision loss",
        "Units": "Years"
    },
    "congenitaly_blind": {
        "Levels":{
            "Congenital blindness": "1",
            "Acquired blindness": "0"
        }
    }
}