{
  "Name": "Dong2023 – 59-subject 40-class SSVEP dataset",
  "BIDSVersion": "1.9.0",
  "HEDVersion": "8.4.0",
  "DatasetType": "derivative",
  "License": "CC BY-NC 4.0",
  "Authors": [
    "Yue Dong",
    "Sen Tian"
  ],
  "ReferencesAndLinks": [
    "https://zenodo.org/records/18847318"
  ],
  "GeneratedBy": [
    {
      "CodeURL": "https://github.com/NeuroTechX/moabb",
      "Name": "moabb",
      "Description": "Mother of All BCI Benchmarks",
      "Version": "1.4.3"
    }
  ],
  "SourceDatasets": [
    {
      "DOI": "10.26599/BSA.2023.9050020",
      "URL": "https://zenodo.org/records/18847318"
    }
  ],
  "Keywords": [
    "healthy",
    "visual",
    "perception",
    "ssvep"
  ],
  "PublicationYear": 2023,
  "ExperimentName": "Dong2023",
  "Description": "59-subject 40-class SSVEP dataset.\n\n\nDataset summary:\n\n#Subj     59\n#Chan      8\n#Classes     40\n#Trials / class      4\nTrials length    4 s\nFreq 250 Hz\n#Sessions      1\n\n\nParticipants:\n\n- Population: healthy\n- Age: 12.4 (range: 10-16) years\n\n\nEquipment:\n\n- Amplifier: NeuSenW (Neuracle)\n- Electrodes: semi-dry (pre-gelled)\n- Montage: standard_1005\n- Reference: Fp1\n\n\nPreprocessing:\n\n- Data state: epoched\n\n\nData Access:\n\n- DOI: 10.26599/BSA.2023.9050020\n- Data URL: https://zenodo.org/records/18847318\n- Repository: Zenodo\n\n\nExperimental Protocol:\n\n- Paradigm: ssvep\n- Task type: SSVEP speller\n- Feedback: visual\n- Stimulus: JFPM visual flicker\n\nDataset from [1]_.\n\nThis dataset contains 8-channel EEG recordings from 59 healthy adolescent\nvolunteers (37 males, 22 females, aged 10-16, mean age 12.4) from the\nSuzhou Junior Competition of BCI Olympics 2022. Subjects performed a\n40-target SSVEP-BCI task using joint frequency and phase modulation (JFPM).\n\nStimulation frequencies ranged from 8.0 to 15.8 Hz (0.2 Hz step) with a\n4x10 matrix layout. Each subject completed 4 blocks of 40 trials with\n1 s cue, 4 s stimulation, and 1 s feedback per trial.\n\nEEG was recorded at 1000 Hz with a NeuSenW system (Neuracle) using 8\nsemi-dry (pre-gelled) electrodes around the occipital lobe, then\ndownsampled to 250 Hz. Data is stored as 4D matrices of shape\n[8, 1250, 40, 4] (channels, time points, targets, blocks).\n\nEach trial epoch spans 5 s (0.5 s pre-stimulus + 4 s stimulation + 0.5 s\npost-stimulus) at 250 Hz = 1250 samples.\n\nReferences\n----------\n.. [1] Y. Dong and S. Tian, \"A large database towards user-friendly\nSSVEP-based BCI,\" Brain Science Advances, vol. 9, no. 4,\npp. 297-309, 2023. DOI: 10.26599/BSA.2023.9050020",
  "DatasetDOI": "10.82901/nemar.nm000128",
  "Version": "1.0.2"
}