{"dataset":{"id":"56213","dataset_id":"on004324","name":"ToonFaces","description":"This dataset contains EEG recordings from an experiment investigating how stylized, exaggerated facial images enhance event-related potential (ERP) features relevant to emotion detection. The study demonstrates that artificially modified human faces elicit a stronger N170 component compared to natural faces, informing the design of affective brain-computer interfaces (BCIs). Participant identifying information has been removed for anonymization.","owner_user_id":15,"status":"active","github_repo":"nemarDatasets/on004324","concept_doi":"10.82901/nemar.on004324","latest_version_doi":"10.82901/nemar.on004324.v1.0.0","created_at":"2026-06-24 01:01:40","updated_at":"2026-08-19 16:09:48","zenodo_concept_id":null,"is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"validated\",\n  \"title\": \"ToonFaces\",\n  \"description\": \"This dataset contains EEG recordings from an experiment investigating how stylized, exaggerated facial images enhance event-related potential (ERP) features relevant to emotion detection. The study demonstrates that artificially modified human faces elicit a stronger N170 component compared to natural faces, informing the design of affective brain-computer interfaces (BCIs). Participant identifying information has been removed for anonymization.\",\n  \"methods_description\": \"EEG signals were recorded while participants viewed images of stylized faces and standard faces. Event-related potentials (ERPs) were analyzed, with particular focus on the N170 component as a neural correlate of facial encoding and emotion processing.\",\n  \"license\": \"CC0\",\n  \"dataset_type\": \"raw\",\n  \"authors\": {\n    \"Luis Alberto Barradas Chacón\": {},\n    \"Selina C. Wriessnegger\": {}\n  },\n  \"keywords\": [\n    {\n      \"term\": \"EEG\"\n    },\n    {\n      \"term\": \"Event-Related Potentials, P300\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D018913\"\n    },\n    {\n      \"term\": \"Emotion-Focused Therapy\",\n      \"subject_scheme\": \"MeSH\",\n      \"scheme_uri\": \"https://id.nlm.nih.gov/mesh/\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D000071441\"\n    },\n    {\n      \"term\": \"brain-computer interface\"\n    },\n    {\n      \"term\": \"N170\"\n    },\n    {\n      \"term\": \"facial recognition\"\n    }\n  ],\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/on004324\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\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\": \"10.18112/openneuro.ds004324.v1.0.0\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"IsDerivedFrom\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataset/on004324\",\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    \"2.6 GB (27 files)\"\n  ],\n  \"formats\": [\n    \".edf\",\n    \".json\",\n    \".md\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"source_hash\": \"c3a8e4740c4d1bc4f13147de088a5ea97680e7170a62667e6aa9a23c58d22774\"\n}","last_activity_at":"2026-06-24 01:01:40","source":"openneuro","source_id":"ds004324","subject_count":26,"modalities":"eeg","age_min":null,"age_max":null,"file_size":2637692001,"total_files":165,"tasks":"RSVP","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Luis Alberto Barradas Chacón, Selina C. Wriessnegger","license":"CC0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.on004324-blue)](https://doi.org/10.82901/nemar.on004324)\n\n# Images of stylized faces improve ERP features used for emotion detection\n\nFor their ease of accessibility and low cost, current Brain-Computer Interfaces (BCI) used to detect subjective emotional and affective states rely largely on electroencephalographic (EEG) signals. Numerous datasets are publicly available for any researcher to design models for affect detection from EEG. However, few designs focus on optimally exploiting the nature of the stimulus elicitation to improve accuracy.\nWe found that artificially enhanced human faces with exaggerated visual features significantly improve some commonly used neural correlates of emotion as measured by event-related potentials (ERPs). These images elicit an enhanced N170 component, well known in facial recognition encoding. Our findings suggest that the study of emotion elicitation could exploit consistent stimuli transformations to study the characteristics of ERPs related to specific affective stimuli. Furthermore, this specific result might be useful in the context of affective BCI design, where a higher accuracy in affect detection from EEG can improve the experience of a user.\n\nParticipant information has been removed for annonimation reasons.\n\nReferences\n----------\nAppelhoff, S., Sanderson, M., Brooks, T., Vliet, M., Quentin, R., Holdgraf, C., Chaumon, M., Mikulan, E., Tavabi, K., Höchenberger, 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. Scientific Data, 6, 103. https://doi.org/10.1038/s41597-019-0104-8\n\n","bids_version":"1.6.0","sessions_count":1,"publish_date":null,"embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-08-05 12:12:15","zarr_store_count":26,"zarr_index_etag":"dc1dfa46d7865b21261358e9c28d8a6e","zarr_source_commit":"d7c0b61d9a5c0be3976f93ac90c473bca40a3aa1","archive_status":"ready","archive_size":1677389755,"archive_retry_count":0,"records_status":"ready","archive_skip_reason":null,"zarr_errors":0,"zarr_failure_count":0,"zarr_deterministic":0,"zarr_failed_at":null,"num_dataset_citations":0,"num_datapaper_citations":0,"n_channels":28,"electrode_system":"10-10","has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":2636878454,"data_complete":1,"withdrawn_at":null,"withdrawn_reason":null,"archive_complete":null,"archive_absent_files":null,"archive_declared_files":null,"zarr_pool_breaks":null,"total_recording_duration":69177,"recording_duration_min":2025,"recording_duration_max":4308,"recording_count":26,"recordings_unavailable":0,"recordings_measured":26,"channel_count_min":38,"channel_count_max":38,"sampling_frequency":500,"power_line_frequency":null,"eeg_reference":null,"placement_scheme":"based on the extended 10/20 system","sweep_stamps":"{\"enrichment_updated_at\":\"2026-08-19 16:09:34\",\"metadata_updated_at\":\"2026-08-19 16:09:47\",\"archive_checked_at\":\"2026-06-24 01:16:39\",\"zarr_checked_at\":null,\"records_checked_at\":\"2026-06-24 01:10:43\",\"citations_updated_at\":null,\"channel_montage_checked_at\":\"2026-06-28 23:22:50\",\"hed_checked_at\":\"2026-06-30 04:56:17\",\"data_checked_at\":\"2026-08-09 03:00:32\",\"availability_report_at\":\"2026-07-23 01:18:00\",\"recording_stats_at\":\"2026-09-02 11:32:41\",\"signal_defaults_at\":\"2026-09-02 12:10:18\"}","participants":26,"num_citations":0,"latest_version":"v1.0.0","zarr_verify_status":null,"zarr_verified_at":null,"owner_username":"nemarAdmin","owner_github":"nemarAdmin","file_size_formatted":"2.46 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/on004324/zarr/index.json","attestation_deposit_type":null,"attestation_key_status":null,"attestation_deidentified":null,"attestation_no_duplicate":null,"attestation_upstream_source":null,"attestation_accepted_at":null}}