{"schema_version":"0.3.0","doc_type":"dataset","dataset_id":"nm000336","name":"Mainsah et al. 2025 — bigP3BCI: An Open, Diverse and Machine Learning Ready P300-based Brain-Computer Interface Dataset (Study R)","description":"BigP3BCI Study R is a P300-based brain-computer interface dataset comprising EEG recordings from 20 subjects performing a 9x8 multi-face character grid speller task across two sessions. This derivative dataset is part of the larger BigP3BCI collection, the largest public P300 BCI dataset with ~267 subjects across 20 studies. The data were acquired at 256 Hz using 32-channel EEG with a g.USBamp amplifier and are formatted according to BIDS standards with HED event annotations for standardized analysis and machine learning applications.","source":"nemar","recording_modality":["EEG"],"bids_version":null,"license":"CC-BY-4.0","authors":[{"name":"Boyla Mainsah","name_type":"Personal"},{"name":"Chance Fleeting","name_type":"Personal","orcid":"0000-0002-6271-4952","affiliations":[{"name":"Duke University","identifier":null,"scheme":null}]},{"name":"Thomas Balmat","name_type":"Personal"},{"name":"Eric Sellers","name_type":"Personal"},{"name":"Leslie Collins","name_type":"Personal"}],"keywords":[{"term":"P300"},{"term":"brain-computer interface"},{"term":"EEG"},{"term":"event-related potential"},{"term":"speller paradigm"},{"term":"visual perception"},{"term":"machine learning"}],"related_identifiers":[{"identifier":"10.13026/0byy-ry86","identifier_type":"DOI","relation_type":"IsDerivedFrom"},{"identifier":"https://github.com/nemarDatasets/nm000336","identifier_type":"URL","relation_type":"IsDescribedBy"},{"identifier":"10.21105/joss.01896","identifier_type":"DOI","relation_type":"IsReferencedBy"},{"identifier":"10.1038/s41597-019-0104-8","identifier_type":"DOI","relation_type":"IsReferencedBy"},{"identifier":"https://nemar.org/dataset/nm000336","identifier_type":"URL","relation_type":"IsDescribedBy"}],"contributors":[],"dates":[],"rights":[{"rights":"CC-BY-4.0","rights_uri":null,"rights_identifier":"CC-BY-4.0","rights_identifier_scheme":"SPDX"}],"language":null,"funding":[],"tasks":["p300"],"datatypes":["eeg"],"sessions":["0","1"],"sessions_count":2,"demographics":{"subjects_count":20,"age_min":0,"age_max":0},"data_summary":{"total_files":3571,"size_bytes":7074953426,"size_human":"6.59 GB"},"provenance":{"latest_snapshot":"v1.0.3","publish_date":"2026-08-18 18:19:15"},"external_links":{"dataset_doi":"10.82901/nemar.nm000336","github_url":"https://github.com/nemarDatasets/nm000336"},"extensions":{"nemar":{"versions":[{"version":"v1.0.3","doi":"10.82901/nemar.nm000336.v1.0.3","created_at":"2026-08-18 18:19:15","manifest_url":"/nm000336/v1.0.3/manifest.json"},{"version":"v1.0.2","doi":"10.82901/nemar.nm000336.v1.0.2","created_at":"2026-08-11 21:51:00","manifest_url":"/nm000336/v1.0.2/manifest.json"},{"version":"v1.0.1","doi":"10.82901/nemar.nm000336.v1.0.1","created_at":"2026-06-03 11:11:13","manifest_url":"/nm000336/v1.0.1/manifest.json"}],"bids_index":{"version":"v1.0.3","subjects":{"sub-1":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-10":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-11":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-12":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-13":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-14":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-15":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-16":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-17":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-18":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-19":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-2":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-20":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-3":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-4":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-5":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-6":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-7":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-8":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-9":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}}}},"pipeline_stage":"validated","data_complete":1,"bytes_present":7057773165}}}