mpib_sp_eeg/task-ActiveFixed_eeg.json

{
    "TaskName": "ActiveFixed",
    "Manufacturer": "Brain Products",
    "PowerLineFrequency": 50,
    "SamplingFrequency": 1000.0,
    "SoftwareFilters": {
        "Lowpass causal Butterworth filter": {
            "Description": "For anti-aliasing prior to downsampling from the default 5000Hz to 1000Hz, because in the case of this dataset, a sampling frequency of 1000Hz was selected in user settings.",
            "CutoffFrequency": "450Hz",
            "RollOffSlopeAtCutoffFrequency": "24db/Oct"
        }
    },
    "RecordingDuration": 4224.999,
    "RecordingType": "continuous",
    "EEGReference": "For all EEG channels: FCz, for other channels, see channels.tsv",
    "EEGGround": "For all EEG channels: Fpz, for all other channels: ca. 10cm above navel on right side of belly.",
    "EEGPlacementScheme": "based on the extended 10/20 system",
    "EEGChannelCount": 64,
    "EOGChannelCount": 2,
    "ECGChannelCount": 1,
    "InstitutionName": "Max Plack Institute for Human Development",
    "InstitutionAddress": "Lentzeallee 94, 14195 Berlin, Germany",
    "ManufacturersModelName": "BrainAmp DC and BrainAmp ExG",
    "SoftwareVersions": "BrainVision Recorder Professional   -   V. 1.21.0303",
    "CapManufacturer": "EasyCap",
    "CapManufacturersModelName": "actiCAP 64 Ch Standard-2",
    "Instructions": "Instructions can be found in the experiment code, here: https://doi.org/10.5281/zenodo.3354368",
    "HardwareFilters": {
        "Highpass causal RC-filter": {
            "Description": "To prevent signals drifts. This filter is specified with a time constant of 10 seconds, which translates to a cutoff frequency of approximately 0.0159Hz.",
            "TimeConstant": "10s",
            "CutoffFrequency": "0.0159Hz",
            "RollOffSlopeAtCutoffFrequency": "6db/Oct"
        },
        "Lowpass causal Butterworth filter": {
            "Description": "For anti-aliasing, because the BrainAmp DC always records at 5000Hz sampling frequency, and this sampling frequency then gets downsampled (or not) depending on user settings.",
            "CutoffFrequency": "1000Hz",
            "RollOffSlopeAtCutoffFrequency": "30db/Oct"
        }
    }
}