{"dataset":{"id":"292","dataset_id":"nm000259","name":"Speier et al. 2017 — A comparison of stimulus types in online classification of the P300 speller using language models","description":"This dataset contains EEG recordings from 10 healthy adults performing a P300 speller task using a 6x6 character matrix, under two stimulus conditions (Famous Faces overlay and Inverting). Data were collected across two sessions per subject with three runs each, using a 32-channel g.tec EEG system at 256 Hz. The dataset is a BIDS-formatted derivative generated via MOABB from the original data reported in Speier et al. (2017), which compared classification approaches for the P300 speller using language models.","owner_user_id":19,"status":"active","github_repo":"nemarDatasets/nm000259","concept_doi":"10.82901/nemar.nm000259","latest_version_doi":"10.82901/nemar.nm000259.v1.0.4","created_at":"2026-03-26 16:35:35","updated_at":"2026-08-20 19:22:07","zenodo_concept_id":"20668683","is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"enriched\",\n  \"title\": \"Speier et al. 2017 — A comparison of stimulus types in online classification of the P300 speller using language models\",\n  \"description\": \"This dataset contains EEG recordings from 10 healthy adults performing a P300 speller task using a 6x6 character matrix, under two stimulus conditions (Famous Faces overlay and Inverting). Data were collected across two sessions per subject with three runs each, using a 32-channel g.tec EEG system at 256 Hz. The dataset is a BIDS-formatted derivative generated via MOABB from the original data reported in Speier et al. (2017), which compared classification approaches for the P300 speller using language models.\",\n  \"methods_description\": \"EEG was recorded at 256 Hz using a 32-channel g.tec amplifier referenced to the left ear with ground at AFz, following the standard_1005 montage. Participants performed a P300 row-column speller task with a 6x6 character matrix under two stimulus conditions (Famous Faces overlay and Inverting), with visual feedback and online classification. Stimuli were presented with a 125 ms stimulus onset asynchrony and 25 ms inter-stimulus interval.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"derivative\",\n  \"authors\": {\n    \"William Speier\": {\n      \"orcid\": \"0000-0002-0890-8684\"\n    },\n    \"Corey Arnold\": {},\n    \"Aniket Deshpande\": {},\n    \"Nader Pouratian\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"E1A-Associated p300 Protein\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D050881\"\n    },\n    {\n      \"term\": \"Event-Related Potentials, P300\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D018913\"\n    },\n    {\n      \"term\": \"brain-computer interface\"\n    },\n    {\n      \"term\": \"P300 speller\"\n    },\n    {\n      \"term\": \"healthy subjects\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.1371/journal.pone.0175382\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/nm000259\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"10.7910/DVN/PHHHB6\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsVersionOf\"\n    },\n    {\n      \"identifier\": \"10.21105/joss.01896\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"10.1038/s41597-019-0104-8\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/nm000259\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    }\n  ],\n  \"resource_type_general\": \"Dataset\",\n  \"resource_type_specific\": \"EEG Dataset\",\n  \"modalities\": [\n    \"eeg\"\n  ],\n  \"sizes\": [\n    \"808.5 MB (121 files)\"\n  ],\n  \"formats\": [\n    \".bdf\",\n    \".dat\",\n    \".json\",\n    \".md\",\n    \".tsv\",\n    \".yaml\",\n    \".yml\"\n  ],\n  \"source_hash\": \"e50012a8a6569e429d71f003f1cfb47cd5fe0752f431a3bdd246a9aa67fab649\"\n}","last_activity_at":"2026-08-16 13:36:27","source":null,"source_id":null,"subject_count":10,"modalities":"eeg","age_min":null,"age_max":null,"file_size":810847321,"total_files":531,"tasks":"p300","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"William Speier, Corey Arnold, Aniket Deshpande, Nader Pouratian","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.nm000259-blue)](https://doi.org/10.82901/nemar.nm000259)\n\nSpeier2017\n==========\n\nP300 speller dataset from Speier et al 2017.\n\nDataset Overview\n----------------\n  Code: Speier2017\n  Paradigm: p300\n  DOI: 10.1371/journal.pone.0175382\n  Subjects: 10\n  Sessions per subject: 2\n  Events: Target=2, NonTarget=1\n  Trial interval: [0, 0.8] s\n  Runs per session: 3\n  File format: BCI2000\n\nAcquisition\n-----------\n  Sampling rate: 256.0 Hz\n  Number of channels: 32\n  Channel types: eeg=32\n  Channel names: Fz, FC1, FCz, FC2, FC4, FC6, C4, C6, CP4, CP6, FC3, FC5, C3, C5, CP3, CP5, CP1, P1, Cz, CPz, Pz, POz, CP2, P2, PO7, PO3, O1, Oz, Iz, O2, PO4, PO8\n  Montage: standard_1005\n  Hardware: g.tec amplifier\n  Reference: left ear\n  Ground: AFz\n  Line frequency: 60.0 Hz\n\nParticipants\n------------\n  Number of subjects: 10\n  Health status: healthy\n  Age: min=20, max=35\n  Species: human\n\nExperimental Protocol\n---------------------\n  Paradigm: p300\n  Number of classes: 2\n  Class labels: Target, NonTarget\n  Trial duration: 1.0 s\n  Study design: P300 row-column speller; 2 stimulus conditions (Famous Faces, Inverting); 6x6 character matrix\n  Feedback type: visual\n  Stimulus type: flash / famous face overlay\n  Stimulus modalities: visual\n  Primary modality: visual\n  Mode: online\n\nHED Event Annotations\n---------------------\n  Schema: HED 8.4.0 | Browse: https://www.hedtags.org/hed-schema-browser\n\n  Target\n    ├─ Sensory-event\n    ├─ Experimental-stimulus\n    ├─ Visual-presentation\n    └─ Target\n\n  NonTarget\n    ├─ Sensory-event\n    ├─ Experimental-stimulus\n    ├─ Visual-presentation\n    └─ Non-target\n\nParadigm-Specific Parameters\n----------------------------\n  Detected paradigm: p300\n  Inter-stimulus interval: 25.0 ms\n  Stimulus onset asynchrony: 125.0 ms\n\nData Structure\n--------------\n  Trials: ~1200 flashes per training run (10 chars x 10 seq x 12)\n  Trials context: per_run\n\nTags\n----\n  Pathology: Healthy\n  Modality: ERP\n  Type: P300\n\nDocumentation\n-------------\n  DOI: 10.1371/journal.pone.0175382\n  License: CC0\n  Investigators: William Speier, Corey Arnold, Aniket Deshpande, Nader Pouratian\n  Institution: University of California, Los Angeles\n  Country: US\n  Data URL: https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/PHHHB6\n  Publication year: 2017\n\nReferences\n----------\nSpeier, W., Deshpande, A., & Pouratian, N. (2017). A comparison of stimulus types in online classification of the P300 speller using language models. PLoS ONE, 12(4), e0175382. https://doi.org/10.1371/journal.pone.0175382\nAppelhoff, S., Sanderson, M., Brooks, T., Vliet, M., Quentin, R., Holdgraf, C., Chaumon, M., Mikulan, E., Tavabi, K., Hochenberger, R., Welke, D., Brunner, C., Rockhill, A., Larson, E., Gramfort, A. and Jas, M. (2019). MNE-BIDS: Organizing electrophysiological data into the BIDS format and facilitating their analysis. Journal of Open Source Software 4: (1896). https://doi.org/10.21105/joss.01896\n\nPernet, C. R., Appelhoff, S., Gorgolewski, K. J., Flandin, G., Phillips, C., Delorme, A., Oostenveld, R. (2019). EEG-BIDS, an extension to the brain imaging data structure for electroencephalography. 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