{"schema_version":"0.3.0","doc_type":"dataset","dataset_id":"nm000157","name":"BigP3BCI Study B — 6x6 checkerboard, multi-session (19 healthy subjects)","description":"BigP3BCI Study B is a derivative EEG dataset containing P300 brain-computer interface recordings from 19 ALS patients across 8 sessions each, using a 6x6 checkerboard visual speller paradigm. The dataset comprises 16-channel EEG data sampled at 256 Hz, annotated with target and non-target event classifications using HED 8.4.0 schema. This dataset is a subset of the larger BigP3BCI collection, the largest public P300 BCI dataset with recordings from approximately 267 subjects across multiple studies.","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":"Event-Related Potentials, P300","subject_scheme":"MeSH","scheme_uri":"https://id.nlm.nih.gov/mesh/","value_uri":"http://id.nlm.nih.gov/mesh/D018913"},{"term":"Brain-Computer Interfaces","subject_scheme":"MeSH","value_uri":"http://id.nlm.nih.gov/mesh/D062207"},{"term":"EEG"},{"term":"visual perception"},{"term":"speller paradigm"},{"term":"amyotrophic lateral sclerosis","subject_scheme":"MeSH","scheme_uri":"https://id.nlm.nih.gov/mesh/","value_uri":"http://id.nlm.nih.gov/mesh/D000274"}],"related_identifiers":[{"identifier":"10.13026/0byy-ry86","identifier_type":"DOI","relation_type":"IsDerivedFrom"},{"identifier":"https://github.com/nemarDatasets/nm000157","identifier_type":"URL","relation_type":"IsDescribedBy"},{"identifier":"10.21105/joss.01896","identifier_type":"DOI","relation_type":"IsDescribedBy"},{"identifier":"10.1038/s41597-019-0104-8","identifier_type":"DOI","relation_type":"IsDescribedBy"},{"identifier":"https://nemar.org/dataset/nm000157","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","2","3","4","5","6","7"],"sessions_count":8,"demographics":{"subjects_count":19,"age_min":0,"age_max":0},"data_summary":{"total_files":4119,"size_bytes":4598129361,"size_human":"4.28 GB"},"provenance":{"latest_snapshot":"v1.0.2","publish_date":"2026-08-18 18:22:41"},"external_links":{"dataset_doi":"10.82901/nemar.nm000157","github_url":"https://github.com/nemarDatasets/nm000157"},"extensions":{"nemar":{"versions":[{"version":"v1.0.2","doi":"10.82901/nemar.nm000157.v1.0.2","created_at":"2026-08-18 18:22:41","manifest_url":"/nm000157/v1.0.2/manifest.json"},{"version":"v1.0.1","doi":"10.82901/nemar.nm000157.v1.0.1","created_at":"2026-08-11 20:28:22","manifest_url":"/nm000157/v1.0.1/manifest.json"},{"version":"v1.0.0","doi":"10.82901/nemar.nm000157.v1.0.0","created_at":"2026-06-01 01:40:37","manifest_url":"/nm000157/v1.0.0/manifest.json"}],"bids_index":{"version":"v1.0.2","subjects":{"sub-1":{"sessions":["0","1","2","3","4","5","6","7"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8","9"]}}}}},"sub-10":{"sessions":["0","1","2","3","4","5"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-11":{"sessions":["0","1","2","3"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-12":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-13":{"sessions":["0","1","2"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-14":{"sessions":["0","1","2","3"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-16":{"sessions":["0"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-17":{"sessions":["0","1","2"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-18":{"sessions":["0","1","2","3"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-19":{"sessions":["0"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-2":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-20":{"sessions":["0","1"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-21":{"sessions":["0"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-3":{"sessions":["0","1","2","3","4","5"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","10","11","2","3","4","5","6","7","8","9"]}}}}},"sub-4":{"sessions":["0","1","2","3","4","5","6"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8","9"]}}}}},"sub-5":{"sessions":["0"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8","9"]}}}}},"sub-6":{"sessions":["0","1","2"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}},"sub-7":{"sessions":["0"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8","9"]}}}}},"sub-8":{"sessions":["0"],"modalities":{"eeg":{"tasks":{"p300":{"runs":["0","1","2","3","4","5","6","7","8"]}}}}}}},"pipeline_stage":"enriched","data_complete":1,"bytes_present":4581366706}}}